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Application Technology Research Unit (ATRU)Wooster, OH
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**Heping Zhu**

1680 Madison Ave., Wooster, Ohio 44691, USA

Phone: (330) 465-4101

Dr. Zhu is assigned to lead the resolution of a wide range of complex, persistent, intractable, and conflicting objectives that simultaneously enhance the science of pesticide applications for protecting crops while conforming to stringent environmental mandates. His research directly supports and impacts the goals of ARS National Program 305-Crop Production and interacts across fields that range from macroscopic delivery systems to microscopic biological reactions of pest-control agents on plants. He provides scientific and technical leadership to pioneer and conceive new hypotheses and concepts for next generations of sustainable digital intelligent spray technology innovations, formulate cooperations among national and international multidisciplinary team members, and transfer the developed technologies to commercial agricultural and industrial production.

Many of Dr. Zhu’s research outcomes have been transferred to end users for adoption or adaptation to reduce pesticide use, reduce crop protection cost, reduce environmental contamination, and protect workers, livestock, natural resources, and ecosystems. He pioneered the big-data technology dated back to early 1990s and developed a user-friendly computer program DRIFTSIM that predicts spray drift potentials to overcome field experimentation constraints. He synthesized diverse engineering principles for the developments of a patented paint spray atomizer, premixing chemical direct in-line injection system, and biological pesticide delivery systems. He developed a portable spray deposition analyzer and DepositScan program to quickly determine the spray deposition quality for improving chemical application. He separated the critical components that would enhance efficiencies and efficacies of pesticide applications and developed unique high-speed image systems to measure and characterize single droplet impaction, retention, dispersion, evaporation and residual pattern formation on plant surfaces, which bridges engineering and biological researchers to elucidate the droplet biological reaction on targets and develop new chemical formulations and application strategies. He analyzed the interrelationships of the spray application process for pest control and established a comprehensive “half-rate” pesticide application strategy to reduce pesticide use for nursery production. Based on the “half-rate” outcomes, he led multidisciplinary teams to invent the world-first laser-guided precision spray technology and then a universal intelligent spray control system as a retrofit for conventional standard sprayers. This new intelligent spray technology has revolutionized the 80-year-old air-blast spray technology, and was commercialized by Smart Apply, Inc (acquired by John Deere in July,2023) to provide new opportunities for engineers, biologists, and growers to modernize integrated pest management programs with an economic and environment-responsible approach to enhancing crop production. His accomplishments were recognized by numerous prestigious honors including the USDA-ARS MWA “Early-Career Research Scientist of the Year” Award and “Senior Scientist of the Year” Award, National Federal Laboratory Consortium Award for Excellence in Technology Transfer, the Fellow of American Society of Agricultural and Biological Engineers (ASABE), and the 2023 ASABE Cyrus Hall McCormick-Jerome Increase Case Gold Medal.

Dr. Zhu’s current research program focuses on discovering conceptual and developmental bases for coordinated macro and micro precision application methodologies and strategies to enhance efficiencies and efficacies of pest control agents and bio-regulating compounds while safeguarding the environment. His recent projects include:
    - Development of improved intelligent precision technologies to efficiently apply pesticides, biological agents, and foliar products for efficacious and sustainable control of pest insects, arthropods, and diseases to protect horticultural, field and greenhouse crops.
    - Enhancement of spray application efficiency and effectiveness through coordinating the micro influences of droplet size and velocity, travel speed, spray formulation physical properties, crop leaf surface morphology, and leaf surface orientation on dynamic impact, rebound, retention, spread, absorption and evaporation processes of droplets on plants and weeds.
    - Characterization of atomization, spray deposition, and spray drift reduction potentials for new technologies applying traditional pesticides, biological pesticides and foliar agents through field, wind tunnel and laboratory assessments.
    - Development of computer simulation programs to predict spray droplet displacements discharged from intelligent and conventional sprayers commonly used in specialty crop production.
    - Investigation of new techniques and sensors such as electronic noses to accurately diagnose infested and infected plants at early stages in an effort to establish smart platforms for best pest management programs.

 Dr. Heping Zhu Google Scholar

**Professional Experience**:

9/1983 - 7/1990       Graduate Research Associate, Jiangsu University, China.

12/1990-3/1997       Post-doc Agricultural Engineer and Research Associate, Agricultural Engineering Department, The Ohio State University/USDA ARS, Application Technology Research Unit, Wooster, OH (also admitted as a part-time graduate student between 9/1995 and 12/1996).

4/1997 - 9/1998       Project Engineer, Titan Tool Inc., Oakland, NJ.

10/1998-12/2000      Senior Project Engineer, Graco Inc., Minneapolis, MN.

1/2001- 4/2003        Agricultural Engineer, USDA, ARS, National Peanut Research Laboratory, Dawson, GA.

4/2003 – present      Agricultural Engineer and Lead Scientist, USDA-ARS, Application Technology Research Unit, Wooster, OH.

**Education**:

1983                      B. S., Mechanical Engineering in Farm Machinery, Jiangsu University

1986                      M. S., Mechanical Engineering in Farm Machinery, Jiangsu University

1990                      Ph.D., Mechanical Engineering in Farm Machinery, Jiangsu University

1996                      Ph.D., Agricultural and Biological Engineering, The Ohio State University (Cumulative GPA: 4.0/4.0)

- Publications - (Clicking on the reprint icon  will take you to the publication reprint.)  
- Development of an electric variable air assist system for apple orchard sprayers -(Peer Reviewed Journal)     
- Stereo vision controlled variable rate sprayer for specialty crops: Part III. Effects of travel speeds on spray deposition and ground loss  -(Peer Reviewed Journal)   Roman, C., Jeon, H., Zhu, H., Ozkan, E., Campos, J. 2023. Stereo vision controlled variable rate sprayer for specialty crops: Part III. Effects of travel speeds on spray deposition and ground loss. Journal of the ASABE. 66(6):1469-1479. https://doi.org/10.13031/ja.15699.   
- Overcoming the nursery industry labor shortage: a survey of strategies to adapt to a reduced workforce and automation and mechanization technology adoption levels  -(Peer Reviewed Journal)   Fulcher, A., Rihn, A., Warner, L., LeBude, A., Schexnayder, S., Altland, J.E., Baumgarner, N., Marble, C., Nackley, L., Palma, M., Velandia, M., Zhu, H., Gan, H., Owen Jr, J.S. 2023. Overcoming the nursery industry labor shortage: a survey of strategies to adapt to a reduced workforce and automation and mechanization technology adoption levels. HortScience. 58(12): 1513-1525. https://doi.org/10.21273/HORTSCI17230-23.   
- Air-pinch PWM valve to regulate flow rate of hollow-cone nozzles for variable-rate sprayers  -(Peer Reviewed Journal)   Campos, J., Zhu, H., Jeon, H., Salcedo, R., Ozkan, E., Roman, C., Gil, E. 2023. Air-pinch PWM valve to regulate flow rate of hollow-cone nozzles for variable-rate sprayers. Journal of the ASABE. 66(5): 1317–1329. https://doi.org/10.13031/ja.15601.   
- Intelligent, variable-rate spray technology to reduce total pesticide output while controlling foliar disease of Shumard oak  -(Peer Reviewed Journal)   Fessler, L., Sun, X., Wright, W.C., Zhu, H., Fulcher, A. 2023. Intelligent, variable-rate spray technology to reduce total pesticide output while controlling foliar disease of Shumard oak. Journal of Environmental Horticulture. 41(3):109-120. https://doi.org/10.24266/0738-2898-41.3.109.   
- Wind tunnels and their uses to study variables affecting precision applications of agricultural sprays  -(Review Article)   Womac, A., Ozkan, E., Zhu, H., Kochendorfer, J., Jeon, H., Eswarachandra, N. 2023. Wind tunnels and their uses to study variables affecting precision applications of agricultural sprays. Journal of the ASABE. 66(5):1135-1151. https://doi.org/10.13031/ja.15622.   
- Stereo vision controlled variable rate sprayer for specialty crops: Part II. Sprayer development and performance evaluation  -(Peer Reviewed Journal)   Roman, C., Jeon, H., Zhu, H., Campos, J., Ozkan, E. 2023. Stereo vision controlled variable rate sprayer for specialty crops: Part II. Sprayer development and performance evaluation. Journal of the ASABE. 66(5): 1005-1017. https://doi.org/10.13031/ja.15578.   
- Evaluation of a laser-guided intelligent sprayer for disease and insect management on grapes  -(Peer Reviewed Journal)   Wodzicki, L.M., Madden, L.V., Long, E.Y., Zhu, H., Ivey, M.L. 2023. Evaluation of a laser-guided intelligent sprayer for disease and insect management on grapes. American Journal of Enology and Viticulture. 74. Article 0740024. https://doi.org/10.5344/ajev.2023.23013.   
- Evaluating kaolin clay as a potential substance for ISO sprayer cleaning system tests  -(Peer Reviewed Journal)   Roman, C., Jeon, H., Zhu, H., Ozkan, E. 2023. Evaluating kaolin clay as a potential substance for ISO sprayer cleaning system tests. Applied Engineering in Agriculture. 39(3):347-358. https://doi.org/10.13031/aea.15466.   
- Advanced spraying systems to improve pesticide saving and reduce spray drift for apple orchards  -(Peer Reviewed Journal)   Xun, L., Campos, J., Salas, B., Fabregas, F.X., Zhu, H., Gil, E. 2023. Advanced spraying systems to improve pesticide saving and reduce spray drift for apple orchards. Precision Agriculture. 24:1526-1546. https://doi.org/10.1007/s11119-023-10007-x.   
- Intelligent spray technology to control pests in nursery and orchard systems with reduced pesticide application rates -(Proceedings)     
- Field evaluation of electrostatic precipitators for particulate matter mitigation in a manure-belt layer facility  -(Peer Reviewed Journal)   Knight, R., Herkins, M., Hoctor, J., Milliken, S., Zhao, L., Zhu, H. 2023. Field evaluation of electrostatic precipitators for particulate matter mitigation in a manure-belt layer facility. Biosystems Engineering. 230:131-144. https://doi.org/10.1016/j.biosystemseng.2023.04.005.   
- Detection and infected area segmentation of apple fire blight using image processing and deep transfer learning for site-specific management  -(Peer Reviewed Journal)   Mahmud, M., He, L., Zahid, A., Heinemann, P., Choi, D., Krawczyk, G., Zhu, H. 2023. Detection and infected area segmentation of apple fire blight using image processing and deep transfer learning for site-specific management. Computers and Electronics in Agriculture. 209. Article #107862. https://doi.org/10.1016/j.compag.2023.107862.   
- Development and optimisation of full-scale prototype electrostatic precipitators in a laboratory for particulate matter mitigation in poultry facilities  -(Peer Reviewed Journal)   Knight, R.M., Hocter, J., Milliken, S., Herkins, M., Zhao, L., Zhu, H. 2023. Development and optimisation of full-scale prototype electrostatic precipitators in a laboratory for particulate matter mitigation in poultry facilities. Biosystems Engineering. 230:71-82. https://doi.org/10.1016/j.biosystemseng.2023.03.019.   
- Development of an automatic airflow control system for precision sprayers based on tree canopy density  -(Peer Reviewed Journal)   Mahmud, M., Zahid, A., He, L., Zhu, H., Choi, D., Krawczyk, G., Heinemann, P. 2023. Development of an automatic airflow control system for precision sprayers based on tree canopy density. Journal of the ASABE. 65(6): 1225-1240. https://doi.org/10.13031/ja.14972.   
- Assessment of PWM solenoid valves to manipulate hollow-cone nozzles with different modulation frequencies  -(Peer Reviewed Journal)   Campos, J., Zhu, H., Jeon, H., Salcedo, R., Ozkan, E., Gil, E. 2023. Assessment of PWM solenoid valves to manipulate hollow-cone nozzles with different modulation frequencies. Applied Engineering in Agriculture. 39(2): 235-244. https://doi.org/10.13031/aea.15415.   
- Evaluation of an electrostatic spray charge system implemented in three conventional orchard sprayers used on a commercial apple trees plantation  -(Peer Reviewed Journal)   Salcedo, R., Sanchez, E., Zhu, H., Fabregas, X., Garcia-Ruiz, F., Gil, E. 2023. Evaluation of an electrostatic spray charge system implemented in three conventional orchard sprayers used on a commercial apple trees plantation. Crop Protection. 167: Article #106212. https://doi.org/10.1016/j.cropro.2023.106212.   
- Target-oriented Intelligent Spraying -(Book / Chapter)     
- Unmanned aerial vehicle based tree canopy characteristics measurement for precision spray applications  -(Peer Reviewed Journal)   Mahmud, M.S., He, L., Heinemann, P., Choi, D., Zhu, H. 2023. Unmanned aerial vehicle based tree canopy characteristics measurement for precision spray applications. Smart Agricultural Technology. 4:Article 100153. https://doi.org/10.1016/j.atech.2022.100153.   
- Protect horticultural crops and ecosystems with sustainable intelligent variable-rate sprayers -(Proceedings)   Zhu, H., Booher, S., Vandenbark, G. 2022. Protect horticultural crops and ecosystems with sustainable intelligent variable-rate sprayers. In: SIMA Agritech Day 5th Edition, November 5, 2022, Paris, France. p.229-242.   
- Investigation of depth camera potentials for variable-rate sprayers  -(Peer Reviewed Journal)   Jeon, H., Zhu, H. 2023. Investigation of depth camera potentials for variable-rate sprayers. American Society of Agricultural and Biological Engineers. 66(1):115-126. https://doi.org/10.13031/ja.15070.   
- Effects of electrode materials and dimensions of an electrostatic spray scrubber on water droplet charging for dust removal  -(Peer Reviewed Journal)   Li, X., Knight, R.M., Hocter, J.S., Zhang, B., Zhao, L., Zhu, H. 2022. Effects of electrode materials and dimensions of an electrostatic spray scrubber on water droplet charging for dust removal. Journal of Air and Waste Management Association. 72(12):1442-1453. https://doi.org/10.1080/10962247.2022.2120564.   
- Comprehension of PWM solenoid valves to control hollow-cone nozzles for precision variable-rate orchard sprayers -(Proceedings)   Zhu, H., Salcedo, R., Jeon, H., Ozkan, E., Gil, E., Campos, J., Romain, C. 2022. Comprehension of PWM solenoid valves to control hollow-cone nozzles for precision variable-rate orchard sprayers. In: SIMA Agritech Day 5th Edition, November 5, 2022, Paris, France. p.291-304..   
- A turbidity module to measure spray mixture concentration for premixing in-line injection system  -(Peer Reviewed Journal)   Zhang, Z., Zhu, H., Jeon, H., Ozkan, E., Wei, Z., Salcedo, R. 2023. A turbidity module to measure spray mixture concentration for premixing in-line injection system. Applied Engineering in Agriculture. 39(1):13-21. https://doi.org/10.13031/aea.15245.   
- Intelligent sprayer spray rates optimization to efficiently apply chemicals in modern apple orchards  -(Peer Reviewed Journal)   Rathnayake, A.P., Sahni, R.K., Khot, L.R., Hoheisel, G.A., Zhu, H. 2022. Intelligent sprayer spray rates optimization to efficiently apply chemicals in modern apple orchards. Journal of the ASABE. 65(6):1411-1420. https://doi.org/10.13031/ja.14654.   
- Stereo vision controlled variable rate sprayer for specialty crops: part I. Controller development  -(Peer Reviewed Journal)   Jeon, H., Zhu, H. 2022. Stereo vision controlled variable rate sprayer for specialty crops: part I. Controller development. Journal of the ASABE. 65(6):1397-1410. https://doi.org/10/13031/ja.15227.   
- Evaluation of a stereo vision as a canopy detection sensor for variable rate specialty crop sprayers -(Proceedings)   Jeon, H., Zhu, H., Roman, C., Campos, J., Salcedo, R., Ozkan, E. 2022. Evaluation of a stereo vision as a canopy detection sensor for variable rate specialty crop sprayers. Symposium Proceedings. SIMA Agritech Day 5th Edition, November 5, 2022, Paris, France. p. 317-328.   
- Droplet size classifications for hollow-cone nozzles manipulated with two different PWM valves -(Proceedings)   Salcedo, R., Zhu, H., Jeon, H., Campos, J., Roman, C., Ozkan, E., Wei, Z., Gil, E. 2022. Droplet size classifications for hollow-cone nozzles manipulated with two different PWM valves. ASABE Annual International Meeting. Paper No. 2200272.   
- Evaluation of of PWM solenoid valves to manipulate hollow cone nozzles operated at high pressures and frequencies -(Proceedings)   Campos, J., Zhu, H., Jeon, H., Ozkan, E., Salcedo, R. 2022. Evaluation of of PWM solenoid valves to manipulate hollow cone nozzles operated at high pressures and frequencies. ASABE Annual International Meeting. Paper No. 2200396.   
- Status of spray penetration and deposition in dense field crop canopies  -(Peer Reviewed Journal)   Womac, A., Ozkan, E., Zhu, H., Kochendorfer, J., Jeon, H. 2022. Status of spray penetration and deposition in dense field crop canopies. American Society of Agricultural and Biological Engineers. 65(5):1107-1117. https://doi.org/10.13031/ja.15091.   
- Droplet size distributions from hollow-cone nozzles coupled with PWM valves  -(Peer Reviewed Journal)   Salcedo, R., Zhu, H., Jeon, H., Ozkan, E., Wei, Z., Gil, E., Campos, J., Roman, C. 2022. Droplet size distributions from hollow-cone nozzles coupled with PWM valves. American Society of Agricultural and Biological Engineers. 65(4):695-706. https://doi.org/10.13031/ja.15064.   
- Optimization of induction charging of water droplets to develop an electrostatic spray scrubber intended for poultry particulate matter mitigation  -(Peer Reviewed Journal)   Knight, R.M., Li, X., Hocter, J.S., Zhang, B., Zhao, L., Zhu, H. 2022. Optimization of induction charging of water droplets to develop an electrostatic spray scrubber intended for poultry particulate matter mitigation. Journal of the ASABE. 65(4):815-824. https://doi.org/10.13031/ja.14913.   
- Characterisation of activation pressure, flowrate and spray angle for hollow-cone nozzles controlled by pulse width modulation  -(Peer Reviewed Journal)   Salcedo, R., Zhu, H., Jeon, H., Ozkan, E., Wei, Z., Gil, E. 2022. Characterisation of activation pressure, flowrate and spray angle for hollow-cone nozzles controlled by pulse width modulation. Biosystems Engineering. 218:139-152. https://doi.org/10.1016/j.biosystemseng.2022.04.002.   
- Foliar deposition and off-target loss in young apple orchard with PWM-controlled spray systems -(Peer Reviewed Journal)   Zhu, H., Ozkan, E., Salcedo, R., Jeon, H., Flachieri, D. 2022. Foliar deposition and off-target loss in young apple orchard with PWM-controlled spray systems. Aspects of Applied Biology. 147:149-155.   
- Low-cost microcontroller-based device to measure kaolin clay concentrations for iso sprayer cleanout tests  -(Peer Reviewed Journal)   Jeon, H., Zhu, H. 2022. Low-cost microcontroller-based device to measure kaolin clay concentrations for iso sprayer cleanout tests. Applied Engineering in Agriculture. 38(1): 135-143. https://doi.org/10.13031/aea.14764.   
- Reducing the nursery pesticide footprint with laser-guided, variable-rate spray application technology  -(Peer Reviewed Journal)   Fessler, L., Fulcher, A., Schneider, L., Wright, W.C., Zhu, H. 2021. Reducing the nursery pesticide footprint with laser-guided, variable-rate spray application technology. HortScience. 56(12):1572-1584. https://doi.org/10.21273/HORTSCI16157-21.   
- LiDAR-sensed tree canopy correction in uneven terrain conditions using a sensor fusion approach for precision sprayers  -(Peer Reviewed Journal)   Mahmud, M., Zahid, A., He, L., Choi, D., Krawczyk, G., Zhu, H. 2021. LiDAR-sensed tree canopy correction in uneven terrain conditions using a sensor fusion approach for precision sprayers. Computers and Electronics in Agriculture. 191. Article 106565. https://doi.org/10.1016/j.compag.2021.106565.   
- Chemical concentration and spatial uniformity of a premixing in-line injection system attached to a variable-rate orchard sprayer  -(Peer Reviewed Journal)   Zhang, Z., Zhu, H., Wei, Z., Salcedo, R. 2021. Chemical concentration and spatial uniformity of a premixing in-line injection system attached to a variable-rate orchard sprayer. Journal of the ASABE. 64(6): 1977-1987. https://doi.org/10.13031/trans.14113.   
- Development of portable E-nose system for fast diagnosis of whitefly infestation on tomato plant in greenhouse  -(Peer Reviewed Journal)   Cui, S., Cao, L., Acosta, N., Zhu, H., Ling, P. 2021. Development of portable E-nose system for fast diagnosis of whitefly infestation on tomato plant in greenhouse. Chemosensors.  9(11). Article 297. https://doi.org/10.3390/chemosensors9110297.   
- Retention and spread capability of impacted droplets with surfactant and hydrocolloid based adjuvants  -(Peer Reviewed Journal)   Abbott, J.R., Zhu, H., Jeon, H. 2021. Retention and spread capability of impacted droplets with surfactant and hydrocolloid based adjuvants. Journal of the ASABE. 64(6):1883-1894. https://doi.org/10.13031/trans.14461.   
- Modelling and optimisation of a wire-plate ESP for mitigation of poultry PM emission using COMSOL  -(Peer Reviewed Journal)   Knight, R.M., Zhao, L., Zhu, H. 2021. Modelling and optimisation of a wire-plate ESP for mitigation of poultry PM emission using COMSOL. Biosystems Engineering. 211:35-49. https://doi.org/10.1016/j.biosystemseng.2021.08.026.   
- Improved canopy characterization with laser scanning sensor for greenhouse spray applications  -(Peer Reviewed Journal)   Nair, U., Ling, P., Zhu, H. 2021. Improved canopy characterization with laser scanning sensor for greenhouse spray applications. Journal of the ASABE. 64(6):2125-2136. https://doi.org/10.13031/trans.14290.   
- Reducing ground and airborne drift losses in young apple orchards with PWM-controlled spray systems  -(Peer Reviewed Journal)   Salcedo, R., Zhu, H., Ozkan, E., Falchieri, D., Zhang, Z., Wei, Z. 2021. Reducing ground and airborne drift losses in young apple orchards with PWM-controlled spray systems. Computers and Electronics in Agriculture. 189. Article 106389. https://doi.org/10.1016/j.compag.2021.106389.   
- Fluid dynamic approaches for prediction of spray drift from ground pesticide applications: a review  -(Review Article)   Hong, S., Park, J., Jeong, H., Zhao, L., Zhu, H. 2021. Fluid dynamic approaches for prediction of spray drift from ground pesticide applications: a review. Agronomy. 11(6). Article 1182. https://doi.org/10.3390/agronomy11061182.   
- Development of a LiDAR-guided section-based tree canopy density measurement system for precision spray applications  -(Peer Reviewed Journal)   Mahmud, M., Zahid, A., He, L., Choi, D., Krawczyk, G., Zhu, H., Heinemann, P. 2021. Development of a LiDAR-guided section-based tree canopy density measurement system for precision spray applications. Computers and Electronics in Agriculture. 182. Article 106053. https://doi.org/10.1016/j.compag.2021.106053.   
- Management of pest insects and plant diseases in fruit and nursery production with laser-guided variable-rate sprayers  -(Peer Reviewed Journal)   Chen, L., Zhu, H., Horst, L., Wallhead, M., Reding, M.E., Fulcher, A. 2020. Management of pest insects and plant diseases in fruit and nursery production with laser-guided variable-rate sprayers. HortScience. 56(1):94–100. https://doi.org/10.21273/HORTSCI15491-20.   
- Canopy spray application technology in specialty crops: A slowly evolving landscape  -(Peer Reviewed Journal)   Warneke, B., Zhu, H., Pscheidt, J., Nackley, L. 2020. Canopy spray application technology in specialty crops: A slowly evolving landscape. Pest Management Science. 77(5):2157–2164. https://doi.org/10.1002/ps.6167.   
- Foliar deposition and coverage on young apple trees with PWM controlled spray systems  -(Peer Reviewed Journal)   Salcedo, R., Zhu, H., Zhang, Z., Wei, Z., Chen, L., Ozkan, E., Falchieri, D. 2020. Foliar deposition and coverage on young apple trees with PWM controlled spray systems. Computers and Electronics in Agriculture. 178. Article 105794. https://doi.org/10.1016/j.compag.2020.105794.   
- Droplet size spectrum, activation pressure and flow rate discharged from PWM flat-fan nozzles  -(Peer Reviewed Journal)   Wei, Z., Zhu, H., Zhang, Z., Salcedo, R. 2021. Droplet size spectrum, activation pressure and flow rate discharged from PWM flat-fan nozzles. Transactions of the ASABE. 64(1):313-325. https://doi.org/10.13031/trans.14100.   
- Advancing sustainability in tree crop pest management: refining spray application rate with a laser-guided variable-rate sprayer in apple orchards  -(Peer Reviewed Journal)   Fessler, L., Fulcher, A., Lockwood, D., Wright, W., Zhu, H. 2020. Advancing sustainability in tree crop pest management: refining spray application rate with a laser-guided variable-rate sprayer in apple orchards. HortScience. 55(9):1522–1530. https://doi.org/10.21273/HORTSCI15056-20.   
- Impact and adhesion of surfactant-amended water droplets on leaf surfaces related to roughness  -(Peer Reviewed Journal)   Abbott, J.R., Zhu, H., Ambrose, A.E. 2020. Impact and adhesion of surfactant-amended water droplets on leaf surfaces related to roughness. Transactions of the ASABE. 63(6):1855-1868. https://doi.org/10.13031/trans.14027.   
- Spray characteristics of rotary micro sprinkler nozzles used in orchard pesticide delivery  -(Peer Reviewed Journal)   Guler, H., Zhang, Z., Zhu, H., Grieshop, M., Ledebuhr, M. 2020. Spray characteristics of rotary micro sprinkler nozzles used in orchard pesticide delivery. Transactions of the ASABE. 63(6):1845-1853. https://doi.org/10.13031/trans.13445.   
- Assessment of chemical concentration accuracy and mixture uniformity of premixing in-line injection system  -(Peer Reviewed Journal)   Zhang, Z., Zhu, H., Salcedo, R., Wei, Z. 2020. Assessment of chemical concentration accuracy and mixture uniformity of premixing in-line injection system. Computers and Electronics in Agriculture. 176. Article 105670. https://doi.org/10.1016/j.compag.2020.105670.   
- Evaluation of the Intelligent Sprayer System in peach production  -(Peer Reviewed Journal)   Boatwright, H., Zhu, H., Clark, A.C., Schnabel, G. 2020. Evaluation of the Intelligent Sprayer System in peach production. Plant Disease. 104(12):3207-3212. https://doi.org/10.1094/PDIS-04-20-0696-RE.   
- Evaluation of PWM technologies for pesticide spray applications in a two-year old apple orchard -(Proceedings)   Salcedo, R., Zhu, H., Zhang, Z., Wei, Z., Chen, L., Ozkan, E. 2020. Evaluation of PWM technologies for pesticide spray applications in a two-year old apple orchard. In:Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), July 13-15, 2020, Virtual Meeting. ASABE Paper No. 2000079.   
- Effect of pressure fluctuation on droplet size distribution from pulse width modulated nozzles -(Proceedings)   Wei, Z., Zhu, H., Salcedo, R., Zhang, Z. 2020. Effect of pressure fluctuation on droplet size distribution from pulse width modulated nozzles. In:Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), July 13-15, 2020, Virtual Meeting. ASABE Paper No. 2000124.   
- Graphical user interface design for premixing in-line injection system attached to a variable-rate orchard sprayer -(Proceedings)   Zhang, Z., Zhu, H., Wei, Z., Salcedo, R. 2020. Graphical user interface design for premixing in-line injection system attached to a variable-rate orchard sprayer. In:Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), July 13-15,2020, Virtual Meeting. ASABE Paper No. 2000099.   
- Quantitative analysis and correction of temperature effects on fluorescent tracer concentration measurement  -(Peer Reviewed Journal)   Zhang, Z., Zhu, H., Guler, H. 2020. Quantitative analysis and correction of temperature effects on fluorescent tracer concentration measurement. Sustainability. 12(11):4501. https://doi.org/10.3390/su12114501.   
- Effects of leaf surface roughness and five adjuvants types on impacting droplet adhesion and spread  -(Peer Reviewed Journal)   Abbott, J.R., Ambrose, A.E., Zhu, H. 2020. Effects of leaf surface roughness and five adjuvants types on impacting droplet adhesion and spread. Journal of ASTM International, Pesticide Formulation and Delivery Systems. 40:128-139. https://doi.org/10.1520/stp162720190145.   
- Assessment of premixing in-line injection system attached on variable-rate orchard sprayer  -(Peer Reviewed Journal)   Zhang, Z., Zhu, H., Salcedo, R., Wei, Z. 2020. Assessment of premixing in-line injection system attached on variable-rate orchard sprayer. Journal of ASTM International, Pesticide Formulation and Delivery Systems. 4:11-24. https://doi.org/10.1520/stp162720190120.   
- Hardware and software design for premixing in-line injection system attached to variable-rate orchard sprayer  -(Peer Reviewed Journal)   Zhang, Z., Zhu, H., Hu, C. 2020. Hardware and software design for premixing in-line injection system attached to variable-rate orchard sprayer. Transactions of the ASABE. 63(4): 823-831. https://doi.org/10.13031/trans.13730.   
- Techno-economic impacts of using a laser-guided variable-rate spraying system to retrofit conventional constant-rate sprayers  -(Peer Reviewed Journal)   Manandhar, A., Zhu, H., Oskan, E., Shah, A. 2020. Techno-economic impacts of using a laser-guided variable-rate spraying system to retrofit conventional constant-rate sprayers. Precision Agriculture. https://doi.org/10.1007/s11119-020-09712-8.   
- Evaluation of laser-guided intelligent sprayer to control insects and diseases in ornamental nurseries and fruit farms  -(Peer Reviewed Journal)   Chen, L., Zhu, H. 2020. Evaluation of laser-guided intelligent sprayer to control insects and diseases in ornamental nurseries and fruit farms. Journal of ASTM International, Pesticide Formulation and Delivery Systems. 40:1-10. https://doi.org/10.1520/stp162720190151.   
- Control of insect pests and diseases in an Ohio fruit farm with a laser-guided intelligent sprayer  -(Peer Reviewed Journal)   Chen, L., Wallhead, M., Reding, M.E., Horst, L., Zhu, H. 2020. Control of insect pests and diseases in an Ohio fruit farm with a laser-guided intelligent sprayer. HortTechnology. 30(2):168-175. https://doi.org/10.21273/horttech04497-19.   
- 3D optical surface profiler for quantifying leaf surface roughness  -(Peer Reviewed Journal)   Abbott, J.R., Zhu, H. 2019. 3D optical surface profiler for quantifying leaf surface roughness. Surface Topography: Metrology and Properties. 7(4):045016. https://doi.org/10.1088/2051-672X/ab4cc6.   
- Amendment of herbicide spray solutions with adjuvants to modify droplet spreading and fading characteristics on weeds  -(Peer Reviewed Journal)   Lin, J., Zhu, H., Ling, P. 2019. Amendment of herbicide spray solutions with adjuvants to modify droplet spreading and fading characteristics on weeds. Applied Engineering in Agriculture. 35(5):713-721. https://doi.org/10.13031/aea.13339.   
- Control of insects and diseases with intelligent variable-rate sprayers in ornamental nurseries -(Peer Reviewed Journal)   Chen, L., Wallhead, M., Zhu, H., Fulcher, A. 2020. Control of insects and diseases with intelligent variable-rate sprayers in ornamental nurseries. Journal of Environmental Horticulture. 37(3):90-100.   
- Development of fast E-nose system for early-stage diagnosis of aphid-stressed tomato plants  -(Peer Reviewed Journal)   Cui, S., Inocente, E.A., Acosta, N., Keener, H.M., Zhu, H., Ling, P.P. 2019. Development of fast E-nose system for early-stage diagnosis of aphid-stressed tomato plants. Sensors. 19(16):3480. https://doi.org/10.3390/s19163480.   
- Investigation of an experimental laser sensor-guided spray control system for greenhouse variable-rate applications  -(Peer Reviewed Journal)   Yan, T., Zhu, H., Sun, L., Wang, X., Ling, P. 2019. Investigation of an experimental laser sensor-guided spray control system for greenhouse variable-rate applications. Transactions of the ASABE. 62(4):899-911. https://doi.org/10.13031/trans.13366.   
- Improved premixing in-line injection system for variable-rate orchard sprayers with Arduino Platform  -(Peer Reviewed Journal)   Zhang, Z., Zhu, H., Guler, H., Shen, Y. 2019. Improved premixing in-line injection system for variable-rate orchard sprayers with Arduino Platform. Computers and Electronics in Agriculture. 162:389-396. https://doi.org/10.1016/j.compag.2019.04.023.   
- Evaluation of object surface edge profiles detected with a 2-D laser scanning sensor  -(Peer Reviewed Journal)   Yan, T., Wang, X., Zhu, H., Ling, P. 2019. Evaluation of object surface edge profiles detected with a 2-D laser scanning sensor. Sensors. 18(11):1-17. https://doi.org/10.3390/s18114060.   
- Assessment of fluorescent dye Brilliant Sulfaflavine on stainless steel screens as spray collectors  -(Peer Reviewed Journal)   You, K., Zhu, H., Abbott, J.R. 2019. Assessment of fluorescent dye Brilliant Sulfaflavine on stainless steel screens as spray collectors. Transactions of the ASABE. 62(2):495-503. https://doi.org/10.13031/trans.13136.   
- Fading process of herbicidal droplets amended with emulsifiable spray adjuvants on cucurbitaceae leaves  -(Peer Reviewed Journal)   Lin, J., Zhu, H. 2019. Fading process of herbicidal droplets amended with emulsifiable spray adjuvants on cucurbitaceae leaves. Transactions of the ASABE. 61(6):1881-1888. https://doi.org/10.13031/trans.13061.   
- SAAS, a computer program for estimating pesticide spray efficiency and drift of air-assisted pesticide applications  -(Peer Reviewed Journal)   Hong, S., Zhao, L., Zhu, H. 2019. SAAS, a computer program for estimating pesticide spray efficiency and drift of air-assisted pesticide applications. Computers and Electronics in Agriculture. 155:58-68. https://doi.org/10.1016/j.compag.2018.09.031.   
- Detection of 3-D objects with a 2-D laser scanning sensor for greenhouse spray applications  -(Peer Reviewed Journal)   Yan, T., Zhu, H., Sun, L., Wang, X., Ling, P. 2018. Detection of 3-D objects with a 2-D laser scanning sensor for greenhouse spray applications. Computers and Electronics in Agriculture. 152:363-374. https://doi.org/10.1016/j.compag.2018.07.030.   
- Variable-rate application technologies in precision agriculture -(Book / Chapter)   Sudduth, K.A., Franzen, A.J., Zhu, H., Drummond, S.T. 2018. Variable-rate application technologies in precision agriculture. In: Stafford, J.V., editor. Precision Agriculture for Sustainability. Cambridge, United Kingdom: Burleigh Dodds Science Publishing Limited. p. 171-194.   
- Plant pest detection using an artificial nose system: A review -(Review Article)   Cui, S., Ling, P., Zhu, H., Keener, H. 2018. Plant pest detection using an artificial nose system: A review. Sensors. 18(2):378-396.   
- Characterization of biological pesticide deliveries through hydraulic nozzles  -(Peer Reviewed Journal)   Xiao, L., Zhu, H., Wallhead, M.W., Horst, L., Ling, P., Krause, C.R. 2018. Characterization of biological pesticide deliveries through hydraulic nozzles. Transactions of the ASABE. 61(3):897-908. https://doi.org/10.13031/trans.12698.   
- Spray outputs from a variable-rate sprayer manipulated with PWM solenoid valves  -(Peer Reviewed Journal)   Silva, J.E., Zhu, H., Cunha, J. 2018. Spray outputs from a variable-rate sprayer manipulated with PWM solenoid valves. Applied Engineering in Agriculture. 34(3):527-534. https://doi.org/10.13031/aea.12556.   
- Spray penetration and natural enemy survival in dense and sparse plant canopies treated with Carbaryl: implications for conventional and biological control -(Peer Reviewed Journal)   Yeary, W., Fulcher, A., Zhu, H., Klingeman, W., Grant, J. 2018. Spray penetration and natural enemy survival in dense and sparse plant canopies treated with Carbaryl: implications for conventional and biological control. Journal of Environmental Horticulture. 36(1): 21-29.   
- CFD simulation of pesticide spray from air-assisted sprayers in an apple orchard: tree deposition and off-target losses  -(Peer Reviewed Journal)   Hong, S., Zhao, L., Zhu, H. 2018. CFD simulation of pesticide spray from air-assisted sprayers in an apple orchard: tree deposition and off-target losses. Atmospheric Environment. 175:109-119.   
- Hyperspectral evaluation of Venturia inaequalis management using the disease predictive model RIMpro in the northeastern U.S -(Peer Reviewed Journal)   Wallhead, M.W., Zhu, H., Broders, K. 2017. Hyperspectral evaluation of Venturia inaequalis management using the disease predictive model RIMpro in the northeastern U.S. Agricultural Sciences. 8:1358-1371.   
- Development of a laser-guided embedded-computer-controlled air-assisted precision sprayer -(Peer Reviewed Journal)   Shen, Y., Zhu, H., Liu, H., Chen, Y., Ozkan, E. 2017. Development of a laser-guided embedded-computer-controlled air-assisted precision sprayer. Transactions of the ASABE. 60(6):1827-1838.   
- CFD simulation of airflow inside tree canopies discharged from air-assisted sprayers  -(Peer Reviewed Journal)   Hong, S., Zhao, L., Zhu, H. 2018. CFD simulation of airflow inside tree canopies discharged from air-assisted sprayers. Computers and Electronics in Agriculture. 149: 121-132.   
- Decision support systems for plant disease and insect management in commercial nurseries in the Midwest: A perspective review -(Review Article)   Wallhead, M.W., Zhu, H. 2018. Decision support systems for plant disease and insect management in commercial nurseries in the Midwest: A perspective review. Journal of Environmental Horticulture. 35(2):84-92.   
- Spray deposition inside multiple-row nursery trees with a laser-guided sprayer  -(Peer Reviewed Journal)   Zhu, H., Liu, H., Shen, Y., Zondag, R. 2017. Spray deposition inside multiple-row nursery trees with a laser-guided sprayer. Journal of Environmental Horticulture. 35(1):13-23.   
- A workflow for extracting plot-level biophysical indicators from aerially acquired multispectral imagery -(Research Notes)   Wallhead, M.W., Zhu, H., Sulik, J., Stump, W. 2017. A workflow for extracting plot-level biophysical indicators from aerially acquired multispectral imagery. Plant Health Progress. 18(2):95-96.   
- Validation of laser-guided variable-rate sprayer for managing insects in ornamental nurseries  -(Peer Reviewed Journal)   Zhu, H., Rosetta, R., Reding, M.E., Zondag, R., Ranger, C.M., Canas, L., Fulcher, A., Krause, C.R., Derksen, R.C., Ozkan, E. 2017. Validation of laser-guided variable-rate sprayer for managing insects in ornamental nurseries. Transactions of the ASABE. 60(2): 337-345.   
- Effect of surfactant concentration on the spreading properties of pesticide droplets on Eucalyptus leaves -(Peer Reviewed Journal)   Lin, H., Zhou, H., Xu, L., Zhu, H., Huang, H. 2016. Effect of surfactant concentration on the spreading properties of pesticide droplets on Eucalyptus leaves. Biosystems Engineering. 143: 42-49.   
- Laboratory evaluation of electrostatic spray wet scrubber to control particulate matter emissions from poultry facilities -(Peer Reviewed Journal)   Yu, R., Zhao, L., Hadlocon, L.S., Zhu, H., Ramdon, S.K. 2017. Laboratory evaluation of electrostatic spray wet scrubber to control particulate matter emissions from poultry facilities. Environmental Technology. 38(1):23-33.   
- Evaluation of a laser scanning sensor on detection of complex shaped targets for variable-rate sprayer development  -(Peer Reviewed Journal)   Liu, H., Zhu, H. 2016. Evaluation of a laser scanning sensor on detection of complex shaped targets for variable-rate sprayer development. Transactions of the ASABE. 59(5): 1181-1192.   
- Coverage area and fading time of surfactant-amended herbicidal droplets on cucurbitaceous leaves  -(Peer Reviewed Journal)   Zhu, H., Lin, J. 2016. Coverage area and fading time of surfactant-amended herbicidal droplets on cucurbitaceous leaves. Transactions of the ASABE. 59(3): 829-838.   
- Semi-mechanistic modelling of ammonia absorption in an acid spray wet scrubber based on mass balance  -(Peer Reviewed Journal)   Hadlocon, L., Zhao, L., Wyslouzil, B., Zhu, H. 2015. Semi-mechanistic modelling of ammonia absorption in an acid spray wet scrubber based on mass balance. Biosystems Engineering. 136:14-24.   
- Efficacious insect and disease control with laser-guided air-assisted sprayer  -(Proceedings)   Zhu, H., Rosetta, R., Reding, M.E., Zondag, R., Ranger, C.M., Canas, L., Fulcher, A., Krause, C.R., Shen, Y., Liu, H., Chen, Y., Ozkan, E., Derksen, R.C., Locke, J.C., Ernst, S. 2015. Efficacious insect and disease control with laser-guided air-assisted sprayer. 13th Workshop on Spray Application in Fruit Growing, SuproFruit 2015, July 15-18, 2015, Lindau/Lake Constance, Germany. 80-82.   
- Determination of foliar uptake of water droplets on waxy leaves in controlled environmental system  -(Peer Reviewed Journal)   Gao, J., Zhu, H., Horst, L., Krause, C.R. 2015. Determination of foliar uptake of water droplets on waxy leaves in controlled environmental system. Transactions of the ASABE. 58(4):1017-1024.   
- Dynamics of water droplet impact and spread on soybean leaves  -(Peer Reviewed Journal)   Jia, W., Zhu, H. 2015. Dynamics of water droplet impact and spread on soybean leaves. Transactions of the ASABE. 58(4):1009-1016.   
- Statistical modeling of ammonia absorption in an acid spray scrubber  -(Peer Reviewed Journal)   Hadlocon, L., Soboyejo, A., Zhao, L., Zhu, H. 2015. Statistical modeling of ammonia absorption in an acid spray scrubber. Biosystems Engineering. 132:88-95.   
- Development of a pheromone elution rate physical model  -(Peer Reviewed Journal)   Teske, M., Thistle, H., Strom, B., Zhu, H. 2015. Development of a pheromone elution rate physical model. Biological Engineering (ASABE). 7(4):183-202.   
- Advance innovations of an intelligent sprayer for nursery and fruit tree crops -(Popular Publication)   Zhu, H. 2015. Advance innovations of an intelligent sprayer for nursery and fruit tree crops. Popular Publication. July/August 2015: 20-21.   
- Nutrient leaching from container-grown ornamental tree production  -(Peer Reviewed Journal)   Zhu, H., Zondag, R., Merrick, J., Demaline, T., Krause, C.R. 2015. Nutrient leaching from container-grown ornamental tree production. Journal of Environmental Horticulture. 33(2):76-83.   
- Embedded computer controlled premixing inline injection system for air-assisted variable-rate sprayers  -(Peer Reviewed Journal)   Shen, Y., Zhu, H. 2015. Embedded computer controlled premixing inline injection system for air-assisted variable-rate sprayers. Transactions of the ASABE. 58(1):39-46.   
- Measurement of semiochemical release rates with a dedicated environmental control system  -(Peer Reviewed Journal)   Zhu, H., Thistle, H.W., Ranger, C.M., Zhou, H., Strom, B.L. 2015. Measurement of semiochemical release rates with a dedicated environmental control system. Biosystems Engineering. 129:277-287.   
- Characterization of air profiles impeded by plant canopies for a variable-rate air-assisted sprayer  -(Peer Reviewed Journal)   Gu, J., Zhu, H., Ding, W., Wang, X. 2014. Characterization of air profiles impeded by plant canopies for a variable-rate air-assisted sprayer. Transactions of the ASABE. 57(5):1307-1315.   
- Development of laser-guided precision sprayers for tree crop applications -(Abstract Only)   Zhu, H., Liu, H., Shen, Y., Chen, Y., Gu, J., Ozkan, E., Derksen, R.C., Reding, M.E., Ranger, C.M., Canas, L., Krause, C.R., Locke, J.C., Ernst, S., Zondag, R., Fulcher, A., Rosetta, R. 2014. Development of laser-guided precision sprayers for tree crop applications. Proceedings for CIGR World Congress Meetings. Http://www.geyseco.es.geystiona/adjs/comunicationes/304/C00930001.pdf.   
- Characterization of dynamic droplet impaction and deposit formation on leaf surfaces  -(Peer Reviewed Journal)   Dong, X., Zhu, H., Yang, X. 2015. Characterization of dynamic droplet impaction and deposit formation on leaf surfaces. Pest Management Science. 71:302-308.   
- Current projects of the Application Technology Research Unit (ATRU) USDA-ARS, Wooster/Toledo, Ohio -(Popular Publication)   Krause, C.R., Altland, J.E., Boldt, J.K., Derksen, R.C., Locke, J.C., Ranger, C.M., Reding, M.E., Zhu, H., Zellner, W.L. 2014. Current projects of the Application Technology Research Unit (ATRU) USDA-ARS, Wooster/Toledo, Ohio. The Buckeye. 25(4):18-20.   
- Development of digital flow control system for multi-channel variable-rate sprayers  -(Peer Reviewed Journal)   Liu, H., Zhu, H., Shen, Y., Chen, Y. 2014. Development of digital flow control system for multi-channel variable-rate sprayers. Transactions of the ASABE. 57(1): 273-281.   
- Plant canopy characteristics effect on spray deposition  -(Peer Reviewed Journal)   Derksen, R.C., Ozkan, H.E., Paul, P., Zhu, H. 2014. Plant canopy characteristics effect on spray deposition. Aspects of Applied Biology. 122:227-235.   
- Spray deposition inside tree canopies from a newly developed variable-rate air assisted sprayer -(Peer Reviewed Journal)   Chen, Y., Ozkan, H.E., Zhu, H., Derksen, R.C., Krause, C.R. 2013. Spray deposition inside tree canopies from a newly developed variable-rate air assisted sprayer. Transactions of the ASABE. 56(6):1263-1272.   
- Spray drift and off-target loss reduction with a precision air-assisted sprayer  -(Peer Reviewed Journal)   Chen, Y., Zhu, H., Ozkan, H.E., Derksen, R.C., Krause, C.R. 2013. Spray drift and off-target loss reduction with a precision air-assisted sprayer. Transactions of the ASABE. 56(6)1273-1281.   
- Three-dimensional imaging system for analyses of dynamic droplet impaction and deposition formation on leaves  -(Peer Reviewed Journal)   Dong, X., Zhu, H., Yang, X. 2013. Three-dimensional imaging system for analyses of dynamic droplet impaction and deposition formation on leaves. Transactions of the ASABE. 56(5):1641-1651.   
- Assessment of spray deposition with water-sensitive paper cards  -(Peer Reviewed Journal)   Salyani, M., Zhu, H., Sweeb, R.D., Pai, N. 2013. Assessment of spray deposition with water-sensitive paper cards. Agricultural Engineering International: CIGR Journal. 15(2):101-111.   
- Development of variable-rate precision spraying systems for tree crop production -(Proceedings)   Zhu, H., Chen, Y., Lu, H., Shen, Y., Jeon, H., Gu, J., 0zkan, E., Derksen, R.C., Reding, M.E., Ranger, C.M., Canas, L., Krause, C.R., Locke, J.C., Ernst, S., Zondag, R., Fulcher, A., Rosetta, R. 2013. Development of variable-rate precision spraying systems for tree crop production. Workshop Proceedings. 12th Workshop on Spray Application Techniques in Fruit Growing (Suprofruit 2013), June 26-28, 2013, Valencia, Spain. p. 123-125.   
- Development of a real-time chemical injection system for air-assisted variable-rate sprayers -(Proceedings)   Shen, Y., Zhu, H., Liu, H., Chen, Y., Ozkan, E. 2013. Development of a real-time chemical injection system for air-assisted variable-rate sprayers. Symposium Proceedings. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting,July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594669.http://dx.doi.org/10.13031/aim.20131594669.   
- Influence of travel speed on spray deposition uniformity from an air-assisted variable-rate sprayer -(Proceedings)   Liu, H., Zhu, H., Shen, Y., Chen, Y., Zondag, R., Ozkan, E. 2013. Influence of travel speed on spray deposition uniformity from an air-assisted variable-rate sprayer. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594610.http://dx.doi.org/10.13031/aim.20131594610.   
- Evaluation of a laser scanning sensor for variable-rate tree sprayer development -(Proceedings)   Liu, H., Zhu, H., Shen, Y., Chen, Y., Ozkan, E. 2013. Evaluation of a laser scanning sensor for variable-rate tree sprayer development. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594563. http://dx.doi.org/10.13031/aim.20131594563.   
- Real-time tree foliage density estimation with laser scanning sensor for variable-rate tree sprayer development -(Proceedings)   Chen, Y., Zhu, H., Ozkan, H.E. 2013. Real-time tree foliage density estimation with laser scanning sensor for variable-rate tree sprayer development. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131596009.http://dx.doi.org/10.13031/aim.20131596009.   
- Delay times of a LiDAR-guided precision sprayer control system -(Proceedings)   Shen, Y., Zhu, H., Liu, H., Chen, Y., Ozkan, E. 2013. Delay times of a LiDAR-guided precision sprayer control system. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594649.http://dx.doi.org/10.13031/aim.20131594649.   
- Air velocity distributions inside tree canopies from a variable-rate air-assisted sprayer -(Proceedings)   Gu, J., Zhu, H., Ding, W. 2013. Air velocity distributions inside tree canopies from a variable-rate air-assisted sprayer. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594711. http://dx.doi.org/10.13031/aim.20131594711.   
- Influence of droplet size and velocity on droplet impact process on waxy leaf surfaces -(Proceedings)   Dong, X., Zhu, H., Yang, X. 2013. Influence of droplet size and velocity on droplet impact process on waxy leaf surfaces. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594784.http://dx.doi.org/10.13031/aim.20131594784.   
- Characterization of hydraulic nozzles for droplet size and spray coverage  -(Peer Reviewed Journal)   Guler, H., Zhu, H., Ozkan, H.E., Ling, P. 2013. Characterization of hydraulic nozzles for droplet size and spray coverage. Atomization and Sprays. 22(8):627-645.   
- Fertilizer applications for container-grown ornamental tree production -(Peer Reviewed Journal)   Zhu, H., Zondag, R., Merrick, J., Demaline, T., Jeon, H.Y., Krause, C.R., Locke, J.C. 2013. Fertilizer applications for container-grown ornamental tree production. Journal of Environmental Horticulture. 31(2):68-76.   
- Dispersion and evaporation of droplets amended with adjuvants on soybeans -(Peer Reviewed Journal)   Gimenes, M., Zhu, H., Raetano, C., Oliveira, R. 2013. Dispersion and evaporation of droplets amended with adjuvants on soybeans. Crop Protection Journal. 44:84-90.   
- Unimpeded air velocity profiles of air-assisted five-port sprayer -(Peer Reviewed Journal)   Gu, J., Zhu, H., Ding, W. 2012. Unimpeded air velocity profiles of air-assisted five-port sprayer. Transactions of the ASABE. 55(5):1659-1666.   
- Computational fluid dynamics applications to improve crop production systems -(Peer Reviewed Journal)   Bartzanas, T., Kacira, M., Zhu, H., Karmaker, S., Tamimi, E., Katsoulas, N., Lee, I.B., Kittas, C. 2013. Computational fluid dynamics applications to improve crop production systems. Computers and Electronics in Agriculture. 93:151-167.   
- Development of variable-rate sprayer with laser scanning sensor to synchronize spray outputs to tree structures -(Peer Reviewed Journal)   Chen, Y., Zhu, H., Ozkan, E. 2012. Development of variable-rate sprayer with laser scanning sensor to synchronize spray outputs to tree structures. Transactions of the ASABE. 55(3):773-781.   
- Two intelligent spraying systems developed for tree crop production -(Abstract Only)   Zhu, H., Ozkan, E., Derksen, R.C., Reding, M.E., Ranger, C.M., Canas, L., Krause, C.R., Locke, J.C., Ernst, S.C., Zondag, R.H., Fulcher, A., Rosetta, R., Jeon, H.Y., Chen, Y., Gu, J., Liu, H., Shen, Y., Rios, A.A. 2012. Two intelligent spraying systems developed for tree crop production. Meeting Abstract. 6th National Small Farm Conference,Memphis TN, September 18-20, 2012. p. 69-70.   
- Development of smart spray systems to enhance delivery of pesticides in field nursery production -(Abstract Only)   Zhu, H., Ozkan, E., Derksen, R.C., Reding, M.E., Ranger, C.M., Canas, L., Krause, C.R., Locke, J.C., Ernst, S., Zondag, R., Fulcher, A., Rosetta, R., Jeon, H.Y., Chen, Y., Gu, J., Liu, H., Shen, Y., Rios, A. 2012. Development of smart spray systems to enhance delivery of pesticides in field nursery production. Annual Meeting of the American Phytopathological Society. Meeting Abstract, August 5-8, 2012, Providence, Rhode Island. #173-P.   
- Air velocity distributions from a variable-rate air-assisted sprayer for tree applications -(Proceedings)   Zhu, H., Gu, J., Chen, Y., Liu, H., Dong, X., Ding, W., Ozkan, E., Krause, C.R. 2012. Air velocity distributions from a variable-rate air-assisted sprayer for tree applications. CIGR-AgEng 2012: International Conference of Agricultural Engineering, July 8-12, 2012, Valencia, Spain. Paper No. C1547.   
- Development of Intelligent Spray Systems for Nursery Crop Production -(Abstract Only)   Zhu, H., Ozkan, E., Derksen, R.C., Ranger, C.M., Reding, M.E., Canas, L., Krause, C.R., Locke, J.C., Ernst, S.C., Zondag, R.H., Fulcher, A., Rosetta, R., Jeon, H.Y., Chen, Y., Gu, J., Hui, L., Shen, Y., Rios, A.A. 2012. Development of Intelligent Spray Systems for Nursery Crop Production. Meeting Abstract. 2012 ASHS Annual Conference, Miami Florida, July 31-August 3, 2012, Paper #8392.   
- A System to investigate 3-D droplet impact on leaf surfaces -(Proceedings)   Dong, X., Zhu, H., Yang, X., Jia, W. 2012. A System to investigate 3-D droplet impact on leaf surfaces. ASABE Annual International Meeting. Paper No. 121337317.   
- Air velocity distributions from air-assisted five-port sprayer -(Proceedings)   Gu, J., Zhu, H., Ding, W. 2012. Air velocity distributions from air-assisted five-port sprayer. ASABE Annual International Meeting. Paper No. 121337320.   
- An electronic flow control system for a variable-rate tree sprayer -(Proceedings)   Liu, H., Zhu, H., Chen, Y., Shen, Y., Ozkan, H.E. 2012. An electronic flow control system for a variable-rate tree sprayer. ASABE Annual International Meeting. Paper No. 121337321.   
- Evaporation rate of emulsion and oil-base emulsion pheromones -(Proceedings)   Xu, L., Ji, Y., Zhou, H., Zhu, H., Thistle, H.W., Krause, C.R. 2012. Evaporation rate of emulsion and oil-base emulsion pheromones. ASABE Annual International Meeting. Paper no. 121340956.   
- Half the Price for Insect and Disease Control, Is It Possible? -(Popular Publication)   Zhu, H., Zondag, R., Krause, C.R., Daley, J., Lyons, B., Merrick, J., Hammersmith, D., Lee, J., Holahan, M., Shelton, M., Geary, D., Demaline, T., Harding, A., Champion, B., Losely, K., Gilson, B., Hendricks, W. 2012. Half the Price for Insect and Disease Control, Is It Possible?. The Buckeye. 23(3):15-21.   
- Field evaluations of application techniques for fungicide spray deposition on wheat and artificial targets -(Peer Reviewed Journal)   Derksen, R.C., Paul, P., Ozkan, H.E., Zhu, H. 2012. Field evaluations of application techniques for fungicide spray deposition on wheat and artificial targets. Applied Engineering in Agriculture. 28(3): 325-331.   
- Influence of application equipment on deposition of spray droplets in wheat canopy -(Peer Reviewed Journal)   Ozkan, H.E., Paul, P.A., Derksen, R.C., Zhu, H. 2012. Influence of application equipment on deposition of spray droplets in wheat canopy. International Advances in Pesticide Applications --Aspects of Applied Biology. 114:317-324.   
- Droplet size distributions of adjuvant-amended sprays from an air-assisted five-port PWM nozzle -(Peer Reviewed Journal)   Gu, J., Zhu, H., Ding, W., Jeon, H. 2011. Droplet size distributions of adjuvant-amended sprays from an air-assisted five-port PWM nozzle. Atomization and Sprays. 21(3):263-274.   
- Development of variable-rate sprayer for nursery liner applications -(Peer Reviewed Journal)   Jeon, H., Zhu, H. 2012. Development of variable-rate sprayer for nursery liner applications. Transactions of the ASABE. 55(1):303-312.   
- Performance evaluation of a newly developed variable rate sprayer for nursery liner applications -(Peer Reviewed Journal)   Jeon, H., Zhu, H., Derksen, R.C., Ozkan, E., Krause, C.R. 2012. Performance evaluation of a newly developed variable rate sprayer for nursery liner applications. Transactions of the ASABE. 54(6):1997-2007.   
- Reduced use of pesticides for effective controls of arthropod pests and plant diseases -(Peer Reviewed Journal)   Zhu, H., Zondag, R.H., Krause, C.R., Merrick, J., Daley, J. 2011. Reduced use of pesticides for effective controls of arthropod pests and plant diseases. Journal of Environmental Horticulture. 29(3):143-151.   
- An experimental variable-rate sprayer for nursery and orchard applications -(Proceedings)   Chen, Y., Zhu, H., Ozkan, E., Derksen, R.C., Krause, C.R. 2011. An experimental variable-rate sprayer for nursery and orchard applications. ASABE Annual International Meeting. Paper No. 1110497. http://asae.frymulti.com/azdez.asp?search=1&JID=5&AID=37207&CID=LOI2011&T=1.   
- Development of LIDAR-guided sprayer to synchronize spray outputs with canopy structures -(Proceedings)   Chen, Y., Zhu, H., Ozkan, E. 2011. Development of LIDAR-guided sprayer to synchronize spray outputs with canopy structures. ASABE Annual International Meeting. Paper No. http://asae.frymulti.com/azdez.asp?search=1&JID=5&AID=37206&CID=loui2011&T=1.   
- Spray droplet sizes with additives discharged from an air-assisted variable-rate nozzle -(Proceedings)   Gu, J., Zhu, H., Ding, W., Jeon, H. 2011. Spray droplet sizes with additives discharged from an air-assisted variable-rate nozzle. ASABE Annual International Meeting. Paper No. 1110542. http://asae.frymulti.com/azdez.asp?search=1&JID=5&AID=37221&CID=loui2011&T=1.   
- A miniature ultrasonic actuator-control system for plant stem diameter micro-variation measurements -(Proceedings)   Gao, G., Zhu, H. 2011. A miniature ultrasonic actuator-control system for plant stem diameter micro-variation measurements. ASABE Annual International Meeting. Paper No. 1110592. http://asae.frymulti.com/azdez.asp?search=1&JID=5&AID=39065&CID=loui2011&T=2.   
- Development of an experimental variable-rate sprayer for nursery liner applications -(Proceedings)   Jeon, H., Zhu, H., Derksen, R.C., Ozkan, E., Krause, C.R. 2011. Development of an experimental variable-rate sprayer for nursery liner applications. ASABE Annual International Meeting. Paper No. 1110537. http://asae.frymulti.com/azdez.asp?search=1&JID=5&AID=37217&CID=loui2011&T=1.   
- Verification of a variable rate sprayer for nursery liner applications -(Proceedings)   Jeon, H., Zhu, H., Derksen, R.C., Ozkan, E., Krause, C.R. 2011. Verification of a variable rate sprayer for nursery liner applications. ASABE Annual International Meeting, 8/7-10/11, Louisville, Kentucky. Paper No. 1110497.   
- Robust crop and weed segmentation under uncontrolled outdoor illumination -(Peer Reviewed Journal)   Jeon, H., Tian, L.F., Zhu, H. 2011. Robust crop and weed segmentation under uncontrolled outdoor illumination. Sensors. 11(6)6270-6283.   
- Optimal Spray Application Rates for Ornamental Nursery Liner Production -(Peer Reviewed Journal)   Zhu, H., Altland, J.E., Derksen, R.C., Krause, C.R. 2011. Optimal spray application rates for ornamental nursery liner production. HortTechnology. 21(3):367-375.   
- Distribution of chemical and microbial pesticides delivered through drip irrigation systems -(Book / Chapter)   Zhu, H., Wang, X., Reding, M.E., Locke, J.C. 2011. Distribution of chemical and microbial pesticides delivered through drip irrigation systems. In: Stoytcheva, M. editor. Pesticides - Formulations, Effects, Fate. Rijeka, Croatia:InTech. p 155-180.   
- Spray technologies for insect and disease control in ornamental nurseries -(Trade Journal)   Zhu, H., Zondag, R. 2011. Spray technologies for insect and disease control in ornamental nurseries. Nursery Management and Production. 58-61.   
- Capability of patch antennas in a portable harmonic radar system to track insects -(Peer Reviewed Journal)   Zhu, H., Psychoudakis, D., Brazee, R.D., Thistle, H.W., Volakis, J.L. 2011. Capability of patch antennas in a portable harmonic radar system to track insects. Transactions of the ASABE. 54(1):355-362.   
- A portable scanning system for evaluation of spray deposit distribution -(Peer Reviewed Journal)   Zhu, H., Salyani, M., Fox, R.D. 2011. A portable scanning system for evaluation of spray deposit distribution. Computers and Electronics in Agriculture. 76(1):38-43.   
- Droplet evaporation and spread on waxy and hairy leaves associated with type and concentration of adjuvants -(Peer Reviewed Journal)   Xu, L., Zhu, H., Ozkan, E., Bagley, B., Krause, C.R. 2011. Droplet evaporation and spread on waxy and hairy leaves associated with type and concentration of adjuvants. Pest Management Science. 67:842-851. DOI: 10.1002/ps.2122.   
- Development of a desiccated cadaver delivery system to apply entomopathogenic nematodes for control of soil pests -(Peer Reviewed Journal)   Zhu, H., Grewal, P.S., Reding, M.E. 2011. Development of a desiccated cadaver delivery system to apply entomopathogenic nematodes for control of soil pests. Applied Engineering in Agriculture. 27(3):317-324.   
- Development of Two Intelligent Spray Systems for Ornamental Nurseries -(Proceedings)   Zhu, H., Jeon, H., Chen, Y., Gu, J., Ozkan, H., Derksen, R.C., Reding, M.E., Ranger, C.M., Canas, L., Krause, C.R., Locke, J.C., Zondag, R.H., Ernst, S.C., Fulcher, A., Rosetta, R. 2012. Development of Two Intelligent Spray Systems for Ornamental Nurseries. International Plant Propagators Proceedings. 60:41-46.   
- Evaluation of ultrasonic sensor for variable rate spray applications  -(Peer Reviewed Journal)   Jeon, H., Zhu, H., Derksen, R.C., Ozkan, H., Krause, C.R. 2011. Evaluation of ultrasonic sensor for variable rate spray applications. Computers and Electronics in Agriculture. 75(1):213-221. https://doi.org/10.1016/j.compag.2010.11.007.   
- Field Evaluations of Application Techniques and Equipment for Wheat Disease Management -(Proceedings)   Derksen, R.C., Paul, P., Ozkan, H., Zhu, H. 2010. Field Evaluations of Application Techniques and Equipment for Wheat Disease Management. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), June 20-23, 2010, Pittsburgh, PA. Paper #1009142.   
- Greenhouse Evaluation of Air-Assist Delivery Parameters for Mature Poinsettias -(Peer Reviewed Journal)   Derksen, R.C., Ranger, C.M., Canas, L.A., Zhu, H., Krause, C.R. 2010. Greenhouse evaluation of air-assist delivery parameters for mature poinsettias. Applied Engineering in Agriculture. 26(6):947-953.   
- Efficacious Insect and Disease Control with Reduced Active Ingredient and Carrier Rate -(Abstract Only)   Zhu, H., Zondag, R.H., Krause, C.R. 2010. Efficacious insect and disease control with reduced active ingredient and carrier rate [abstract]. 12th International Congress of Pesticide Chemistry, July 4-8, 2010, Melbourne, Australia. p. 7.   
- Evaporation Time and Spread Area of Adjuvant-amended Droplets on Waxy and Hairy Leaves -(Proceedings)   Zhu, H., Yu, Y., Xu, L., Ozkan, H.E., Krause, C.R. 2010. Evaporation Time and Spread Area of Adjuvant-amended Droplets on Waxy and Hairy Leaves. Symposium Proceedings. www.ilass.org/recent/conferencepapers/ilass2010-140.pdf.   
- Evaporation Rate and Development of Wetted Area of Water Droplets with and without Surfactant at Different Locations on Waxy Leaf Surfaces -(Peer Reviewed Journal)   Xu, L., Zhu, H., Ozkan, E., Thisle, H. 2010. Evaporation Rate and Development of Wetted Area of Water Droplets with and without Surfactant at Different Locations on Waxy Leaf Surfaces. Biosystems Engineering. 106: 58-67.   
- Adjuvant Effects on Evaporation Rates and Wetted Area of Droplets on Waxy Leaves -(Peer Reviewed Journal)   Xu, L., Zhu, H., Ozkan, E., Bagley, B., Derksen, R.C., Krause, C.R. 2010. Adjuvant Effects on Evaporation Rates and Wetted Area of Droplets on Waxy Leaves. Transactions of the ASABE. 53(1): 13-20.   
- Laboratory and Field Tests of Ultrasonic Sensors for Precision Sprayers -(Proceedings)   Jeon, H.Y., Zhu, H., Derksen, R.C., Ozkan, H.E., Krause, C.R. 2010. Laboratory and Field Tests of Ultrasonic Sensors for Precision Sprayers. American Society of Agricultural and Biological Engineers International Meeting, June 20-23, 2010, Pittsburgh, Pennsylvania. ASABE Paper # 1008804.   
- A Portable Pixel Recognition System for Evaluating the Distribution of Spray Deposits -(Proceedings)   Zhu, H., Salyani, M., Fox, R.D. A Portable Pixel Recognition System for Evaluating the Distribution of Spray Deposits. American Society of Agricultural and Biological Engineers International Meeting, June 20-23, 2010, Pittsburgh, Pennsylvania. ASABE Paper # 1008502.   
- Evaporation and Spread of Droplets with Various Types and Concentrations of Adjuvants on Waxy and Hairy Leaves -(Proceedings)   Xu, L., Zhu, H., Ozkan, H.E., Bagley, W.E. Evaporation and Spread of Droplets with Various Types and Concentrations of Adjuvants on Waxy and Hairy Leaves. American Society of Agricultural and Biological Engineers International Meeting, June 20-23, 2010, Pittsburgh, Pennsylvania. ASABE Paper # 1008586.   
- A Real-time Variable-Rate Sprayer for Nursery Liner Applications -(Proceedings)   Jeon, H.Y., Zhu, H., Derksen, R.C., Ozkan, H.E., Krause, C.R. 2010. A Real-time Variable-Rate Sprayer for Nursery Liner Applications. American Society of Agricultural and Biological Engineers International Meeting, June 20-23, 2010, Pittsburgh, Pennsylvania. ASABE Paper #1008801.   
- Evaluation of Handgun and Broadcast Systems for Spray Deposition in Greenhouse Poinsettia Canopies -(Peer Reviewed Journal)   Derksen, R.C., Ranger, C.M., Canas, L.A., Locke, J.C., Zhu, H., Krause, C.R. 2010. Evaluation of Handgun and Broadcast Systems for Spray Deposition in Greenhouse Poinsettia Canopies. Transactions of the ASABE. 53(1): 5-12.   
- ARS Nursery and Floricultural Crop Research in Ohio -(Popular Publication)   Krause, C.R., Altland, J.E., Derksen, R.C., Frantz, J., Locke, J.C., Ranger, C.M., Reding, M.E., Zhu, H. 2009. ARS Nursery and Floricultural Crop Research in Ohio. The Buckeye. December 2009, pg 19-21.   
- Influence of Spray Formulation and Leaf Surface Structure on Droplet Evaporation and Wetted Area -(Peer Reviewed Journal)   Zhu, H., Yu, Y., Ozkan, H. 2010. Influence of Spray Formulation and Leaf Surface Structure on Droplet Evaporation and Wetted Area. Aspects of Applied Biology. 99:333-340.   
- Off-Target Loss in Ornamental Nurseries with Different Spray Techniques -(Proceedings)   Zhu, H., Derksen, R.C., Krause, C.R., Zondag, R.H. 2009. Off-Target Loss in Ornamental Nurseries with Different Spray Techniques. Communications in Agricultureand Biological Sciences, Ghent University, Ghent, Belgium. Vol 74(1): 25-36.   
- Evaporation and Coverage Area of Pesticide Droplets on Hairy and Waxy Leaves -(Peer Reviewed Journal)   Yu, Y., Zhu, H., Frantz, J., Reding, M.E., Chan, K.C. 2009. Evaporation and Coverage Area of Pesticide Droplets on Hairy and Waxy Leaves. Biosystems Engineering. 104:324-334.   
- The effects of spray application rate and droplet size on applications to control soybean rust -(Proceedings)   Bretthauer, S.M., Mueller, T.A., Bode, L.E., Derksen, R.C., Zhu, H. The effects of spray application rate and droplet size on applications to control soybean rust. Presented at the 2008 American Society of Agricultural and Biological Engineers Annual International Meeting. Paper Number 084219 Available: http://asae.frymulti.com/azdez.asp?search=1&JID=5&AID=25050&CID=prov2008&v=&i=&T=1    
- Delivery of Chemical and Microbial Pesticides from Drip Irrigation Emitters -(Peer Reviewed Journal)   Wang, X., Zhu, H., Reding, M.E., Locke, J.C., Leland, J.E., Derksen, R.C., Spongberg, A.L., Krause, C.R. 2009. Delivery of Chemical and Microbial Pesticides from Drip Irrigation Emitters. Applied Engineering in Agriculture. 25(6):883-893.   
- Hand-held Pressure Gauge Calibrator -(Popular Publication)   Zhu, H. 2009. Hand-held Pressure Gauge Calibrator. ARS Newsletter.Available: http://www.greenbeam.com/rs/nm_pdfs/16718_026.pdf   
- DepositScan, a Scanning Program to Measure Spray Deposition Distributions -(Peer Reviewed Journal)   Zhu, H. 2009. DepositScan, a Scanning Program to Measure Spray Deposition Distributions. Software and User Manual Public Release. Available: http://www.ars.usda.gov/mwa/wooster/atru/depositscan.    
- Surfactant Droplet Evaporation and Deposition Patterns on Waxy Leaf Surface -(Proceedings)   Xu, L., Zhu, H., Ozkan, E. 2009. Surfactant Droplet Evaporation and Deposition Patterns on Waxy Leaf Surface. ASABE Annual International Meeting. ASABE paper # 096671, pg 20.   
- Adjuvant Effects on Evaporation Time and Wetted Area of Droplets -(Proceedings)   Xu, L., Zhu, H., Ozkan, E., Bagley, B. 2009. Adjuvant Effects on Evaporation Time and Wetted Area of Droplets. ASABE Annual International Meeting, June 21-24, 2009, Reno, NV. Paper #96675.   
- Comparison of Handgun and Boom Spray Delivery Systems for Greenhouses -(Proceedings)   Derksen, R.C., Ranger, C.M., Canas, L.A., Locke, J.C., Zhu, H., Krause, C.R. 2009. Comparison of Handgun and Boom Spray Delivery Systems for Greenhouses. ASABE Annual International Meeting, June 21-24, 2009, Reno, Nevada. ASABE Paper #97453.   
- Effects of Sprayer Configuration of Efficacy for the Control of Scab on Crabapple Using Electron Beam Analysis -(Peer Reviewed Journal)   Krause, C.R., Derksen, R.C., Horst, L., Zhu, H., Zondag, R. 2009. Effects of Sprayer Configuration of Efficacy for the Control of Scab on Crabapple Using Electron Beam Analysis. Scanning. 31:24-27.   
- Evaporation and Deposition Coverage Area of Droplets Containing Insecticides and Spray Additives on Hydrophilic, Hydrophobic and Crabapple Leaf Surfaces -(Peer Reviewed Journal)   Yu, Y., Zhu, H., Derksen, R.C., Krause, C.R. 2009. Evaporation and Deposition Coverage Area of Droplets Containing Insecticides and Spray Additives on Hydrophilic, Hydrophobic and Crabapple Leaf Surfaces. Transactions of the ASABE. 52(1):39-49.   
- Development of a Canopy Opener to Improve Spray Deposition and Coverage inside Soybean Canopies -- Part 1: Mathematical Models to Assist Opener Development -(Peer Reviewed Journal)   Zhu, H., Brazee, R.D., Fox, R.D., Derksen, R.C., Ozkan, H.E. 2008. Development of a Canopy Opener to Improve Spray Deposition and Coverage Inside Soybean Canopies -- Part 1: Mathematical Models to Assist Opener Development. Transactions of the ASABE. 51(6):1905-1912.   
- Development of a Canopy Opener to improve Spray Deposition and Coverage Inside Soybean Canopies -- Part 2: Opener Design with Field Experiments -(Peer Reviewed Journal)   Zhu, H., Derksen, R.C., Ozkan, H.E., Reding, M.E., Krause, C.R. 2008. Development of a Canopy Opener to Improve Spray Deposition and Coverage Inside Soybean Canopies -- Part 2: Opener Design with Field Experiments. Transactions of the ASABE. 51(6):1913-1921.   
- A Portable Low-Power Harmonic Radar System and Conformal Tag for Insect Tracking -(Peer Reviewed Journal)   Psychoudakis, D., Moulder, W., Chen, C., Zhu, H., Volakis, J.L. 2008. A Portable Low-Power Harmonic Radar System and Conformal Tag for Insect Tracking. Institute of Electrical and Electronics Engineers Transactions on Antennas. 7:444-447.   
- Evaporation of Pesticide Droplets under Various Relative Humidity Conditions -(Peer Reviewed Journal)   Yu, Y., Zhu, H., Ozkan, H.E. 2008. Evaporation of Pesticide Droplets under Various Relative Humidity Conditions. Journal of ASTM International. 6(1):1-8.   
- Evaporation and deposition coverage of single droplets on various waxy surfaces -(Abstract Only)   Zhu, H., Yu, Y., Ozkan, H.E., Derksen, R.C., Krause, C.R. 2008. Evaporation and deposition coverage of single droplets on various waxy surfaces. International Crop Protection Compendium.73(4):711-718   
- Drip-Chemigation with Imidacloprid and Nematodes for Control of Scarab Larvae in Nursery Crops -(Peer Reviewed Journal)   Reding, M.E., Zhu, H., Derksen, R.C. 2008. Drip-Chemigation with Imidacloprid and Nematodes for Control of Scarab Larvae in Nursery Crops. Journal of Environmental Horticulture. 26:93-100.   
- Quantitative Assessment of Spray Deposition with Water-Sensitive Paper -(Proceedings)   Salyani, M., Zhu, H., Hoffmann, W.C., Sweeb, R.D., Pai, N. 2008. Quantitative Assessment of Spray Deposition with Water-Sensitive Paper. ASABE Annual International Meeting.ASABE Paper Number 083895   
- Determining the Influence of Spray Quality, Nozzle Type, Spray Volume, and Air-Assisted Application Strategies on Deposition of Pesticides in Soybean Canopy -(Peer Reviewed Journal)   Derksen, R.C., Zhu, H., Ozkan, E., Hannond, R., Dorrance, A. 2008. Determining the Influence of Spray Quality, Nozzle Type, Spray Volume, and Air-Assisted Application Strategies on Deposition of Pesticides in Soybean Canopy. Transactions of the ASABE. 51(5):1529-1537.   
- Comparison of drift potentials between air induction and conventional nozzles. -(Abstract Only)   Zhu, H. 2008. Comparison of drift potentials between air induction and conventional nozzles. Meeting Abstract.Available: http://www.tpsalliance.org/conference/papers/PapersB_Zhu_Drift%20Potentials.pdf    
- Uniformity of agro-chemicals and bio-compounds applied through drip irrigation system -(Proceedings)   Zhu, H., Wang, X., Reding, M.E., Locke, J.C., Leland, J.E., Spongberg, A.L., Derksen, R.C., Krause, C.R. 2008. Uniformity of agro-chemicals and bio-compounds applied through drip irrigation system. ASABE Annual International Meeting. Paper 084084.   
- Influence of spray additives on droplet evaporation and residual patterns on wax and wax-free surfaces   -(Proceedings)   Zhu, H., Yu, Y., Ozkan, E.H., Derksen, R.C., Krause, C.R. 2008. Influence of spray additives on droplet evaporation and residual patterns on wax and wax-free surfaces. ASABE Annual International Meeting. Paper #083752.   
- A History of Air-Blast Sprayer Development and Future Prospects -(Peer Reviewed Journal)   Fox, R.D., Derksen, R.C., Zhu, H., Brazee, R.D., Svensson, S.A. 2008. A History of Air-Blast Sprayer Development and Future Prospects. Transactions of the ASABE. 51(2):405-410   
- Comparing Greenhouse Handgun Delivery to Poinsettias by Spray Volume and Quality -(Peer Reviewed Journal)   Derksen, R.C., Frantz, J., Ranger, C.M., Locke, J.C., Zhu, H., Krause, C.R. 2008. Comparing Greenhouse Handgun Delivery to Poinsettias by Spray Volume and Quality. Transactions of the ASABE. 51(1)27-33.   
- Field Evaluation of Application Variables and Plant Spacing for Bell Pepper Pest Management -(Peer Reviewed Journal)   Derksen, R.C., Vitanza, S., Welty, C., Miller, S., Bennett, M., Zhu, H. 2007. Field Evaluation of Application Variables and Plant Spacing for Bell Pepper Pest Management. Transactions of the ASABE. 50(6):1945:1953.   
- Fungicide Application Technology -(Proceedings)   Derksen, R.C., Ozkan, H.E., Zhu, H., Hammond, R., Dorrance, A. 2007. Fungicide Application Technology. National Soybean Rust Symposium.   
- Residual Patterns of Alkyl Polyoxyethylene Surfactant Droplets after Water Evaporation -(Peer Reviewed Journal)   Pierce, S.M., Chan, K.B., Zhu, H. 2008. Residual Patterns of Alkyl Polyoxyethylene Surfactant Droplets after Water Evaporation. Journal of Agricultural and Food Chemistry. 56(1):213-319.   
- Current projects of the Application Technology Research Unit -(Abstract Only)   Krause, C.R., Altland, J.E., Derksen, R.C., Frantz, J., Locke, J.C., Ranger, C.M., Reding, M.E., Zhu, H. 2007. Current projects of the Application Technology Research Unit. OFA Bulletin. No.904:24-25.   
- Influence of Spray Volume on Spray Deposition and Coverage Within Nursery Trees -(Peer Reviewed Journal)   Zhu, H., Zondag, R.H., Derksen, R.C., Reding, M.E., Krause, C.R. 2008. Influence of Spray Volume on Spray Deposition and Coverage Within Nursery Trees. Journal of Environmental Horticulture. 26(1):51-57.   
- Corn Nutritional Properties and Yields with Surface Drip Irrigation in Topographically Variable Fields -(Peer Reviewed Journal)   Zhu, H., Lan, Y., Lamb, M.C., Butts, C.L. 2007. Corn Nutritional Properties and Yields with Surface Drip Irrigation in Topographically Variable Fields. International Agricultural Engineering Journal. 9(9):1-10.   
- Coverage and Drift Produced by Air Induction and Conventional Hydraulic Nozzles Used for Orchard Applications -(Peer Reviewed Journal)   Derksen, R.C., Zhu, H., Fox, R.D., Brazee, R.D., Krause, C.R. 2007. Coverage and Drift Produced by Air Induction and Conventional Hydraulic Nozzles Used for Orchard Applications. Transactions of the ASABE. 50(5):1493-1501.   
- Comparison of irrigation, leachate and tree growth between soilless and coal ash based media -(Proceedings)   Zhu, H., Zondag, R., Frantz, J., Chen, L., Krause, C.R. 2007. Comparison of irrigation, leachate and tree growth between soilless and coal ash based media. International Symposium on Growing Media and Hydroponics.Available: http://www.actahort.org/books/819/819_54.htm. ISHS Acta Horticulturae 819, International Symposium on Growing Media 2007. Nottingham, United Kingdom.   
- Half Rate Pesticide Trial in Nursery Applications -(Abstract Only)   Zhu, H. 2007. Half Rate Pesticide Trial in Nursery Applications [abstract]. Internet Web Page.   
- DRIFTSIM, A Computer Program for Estimating Spray Drift Distances -(Abstract Only)   Zhu, H. 2007. Driftsim, a computer program for estimating spray drift distances [abstract]. Internet Web Page.   
- Investigation of Drainage and Plant Growth from Nursery Container  Substrate -(Peer Reviewed Journal)   Zhu, H., Frantz, J., Derksen, R.C., Krause, C.R. 2007. Investigation of Drainage and Plant Growth from Nursery Container Substrate. Applied Engineering in Agriculture. 23(3):289-297.   
- The Effect of Spray Volume and Quality on Handgun Delivery of Pesticides to Greenhouse Plants -(Proceedings)   Derksen, R.C., Frantz, J., Ranger, C.M., Locke, J.C., Zhu, H., Krause, C.R. 2007. The Effect of Spray Volume and Quality on Handgun Delivery of Pesticides to Greenhouse Plants. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). Paper No. 071149.   
- Spray Characteristics and Drift Reduction Potential with Air Induction and Conventional Flan Fan Nozzles -(Peer Reviewed Journal)   Guler, H., Zhu, H., Ozkan, H.E., Derksen, R.C., Yu, Y., Krause, C.R. 2007. Spray Characteristics and Drift Reduction Potential with Air Induction and Conventional Flan Fan Nozzles. Transactions of the ASABE. 50(3):745-754.   
- Wide-swath Spray Application in Ornamental Nurseries with Cannon Air Jet Sprayer -(Proceedings)   Zhu, H., Yu, Y., Derksen, R.C., Ozkan, H.E., Krause, C.R. 2007. Wide-swath Spray Application in Ornamental Nurseries with Cannon Air Jet Sprayer. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), June 17-21, 2007, Minneapolis, MN. Paper No. 071069.   
- Nozzle and Equipment Considerations for Improved Coverage in the Soybean Canopy: A Summary of the Work Done in Ohio -(Proceedings)   Derksen, R.C., Ozkan, H.E., Zhu, H., Dorrance, A. 2006. Nozzle and Equipment Considerations for Improved Coverage in the Soybean Canopy: A Summary of the Work Done in Ohio. National Soybean Rust Symposium.   
- Development of Harmonic Radar Systems for Tracking Emerald Ash Borer -(Abstract Only)   Zhu, H. 2007. Development of Harmonic Radar Systems for Tracking Emerald Ash Borer [abstract]. USDA Interagency Research Forum on Gypsy Moth and Other Invasive Species.   
- A Specially Designed Air-Assist Sprayer to Improve Spray Penetration and Air Jet Velocity Distribution inside Dense Nursery Crops -(Peer Reviewed Journal)   Zhu, H., Brazee, R.D., Derksen, R.C., Fox, R.D., Krause, C.R., Ozkan, H.E., Losely, K.E. 2006. A Specially Designed Air-Assist Sprayer to Improve Spray Penetration and Air Jet Velocity Distribution inside Dense Nursery Crops. Transactions of the ASAE. 49(5):1285-1294.   
- Achieve PIP Precision -(Popular Publication)   Zhu, H., Zondag, R.H., Krause, C.R., Demaline, T. 2006. Achieve PIP Precision. Nursery Management and Production. p. 59-64.   
- Dynamic Air Velocity and Spray Deposition inside Dense Nursery Crops with a Multi-Jet Air Assist Sprayer -(Proceedings)   Zhu, H., Derksen, R.C., Krause, C.R., Ozkan, H.E., Brazee, R.D., Fox, R.D., Losely, K. 2006. Dynamic Air Velocity and Spray Deposition inside Dense Nursery Crops with a Multi-Jet Air Assist Sprayer [abstract]. ASABE Annual International Meeting. Paper No. 061125.   
- Development of a Canopy Opener to Increase Spray Deposition and Coverage inside Soybean Canopies -(Proceedings)   Zhu, H., Derksen, R.C., Ozkan, H.E., Guler, H., Brazee, R.D., Reding, M.E., Krause, C.R. 2006. Development of a Canopy Opener to Increase Spray Deposition and Coverage inside Soybean Canopies [abstract]. ASABE Annual International Meeting. Paper No. 061164.   
- SPRAY CHARACTERISTICS AND WIND TUNNEL EVALUATION OF DRIFT REDUCTION POTENTIAL WITH AIR INDUCTION AND CONVENTIONAL FLAT FAN NOZZLE -(Proceedings)   Guler, H., Zhu, H., Ozkan, H.E., Derksen, R.C., Yu, Y., Krause, C.R. 2006. Spray characteristics and wind tunnel evaluation of drift reduction potential with air induction and conventional flat fan nozzle [Abstract]. American Society Agricultural Biological Engineers, Annual International Meeting. Paper No. 06111.   
- Is Your Air Blast Sprayer Doing What You Want? -(Abstract Only)   Zhu, H., Zondag, R.H. 2006. Is Your Air Blast Sprayer Doing What You Want? The Buckeye. p. 1-7.   
- RECENT ADVANCES IN PESTICIDE SPRAY APPLICATION TECHNOLOGY -(Abstract Only)   Zhu, H. 2006. Recent advances in pesticide spray application technology. Agricultural Pesticides Conference Proceedings.   
- Foliar Deposition and Off-Target Loss with Different Spray Techniques in Nursery Application -(Peer Reviewed Journal)   Zhu, H., Derksen, R.C., Guler, H., Krause, C.R., Ozkan, H.E. 2006. Foliar Deposition and Off-Target Loss with Different Spray Techniques in Nursery Application. Transactions of the ASAE. 49(2):325-334.   
- NEW, INNOVATIVE RESEARCH IN PESTICIDE APPLICATION TECHNOLOGIES -(Proceedings)   Krause, C.R., Zhu, H., Derksen, R.C., Reding, M.E., Zondag, R.A., Frantz, J., Locke, J.C. 2006. New, innovative research in pesticide application technologies. International Crop Protection Compendium.   
- Wind Tunnel Evaluation of Drift Reduction Potential and Spray Characteristics with Drift Retardants at High Operating Pressure -(Peer Reviewed Journal)   Guler, H., Zhu, H., Ozkan, H.E., Derksen, R.C., Krause, C.R. 2006. Wind Tunnel Evaluation of Drift Reduction Potential and Spray Characteristics with Drift Retardants at High Operating Pressure. American Society for Testing and Materials. 3(5):1-9.   
- EVALUATION OF SPRAYING EQUIPMENT FOR EFFECTIVE DEPOSITION AND COVERAGE TO CONTROL ASIAN SOYBEAN RUST -(Abstract Only)   Ozkan, H.E., Zhu, H., Derksen, R.C. 2006. Evaluation of spraying equipment for effective deposition and coverage to control asian soybean rust. ASABE Annual International Meeting, July 9-12, 2006, Portland, OR.   
- Investigation of Nursery Canopy and Ground Deposition with Three Spray Techniques -(Peer Reviewed Journal)   Zhu, H., Derksen, R.C., Guler, H., Krause, C.R., Ozkan, H.E. 2006. Investigation of Nursery Canopy and Ground Deposition with Three Spray Techniques. International Advances in Pesticide Application--Aspects of Applied Biology. 77:489-496.   
- Evaluation of Various Spraying Equipment for Effective Application of Fungicides to Control Asian Soybean Rust -(Peer Reviewed Journal)   Ozkan, H.E., Zhu, H., Derksen, R.C., Guler, H., Krause, C.R. 2006. Evaluation of Various Spraying Equipment for Effective Application of Fungicides to Control Asian Soybean Rust. International Advances in Pesticides Application--Aspects of Applied Biology. 77:423-431.   
- DRIP IRRIGATION AS A DELIVERY SYSTEM FOR IMIDACLOPRID AND NEMATODES FOR CONTROL OF SCARAB GRUBS IN NURSERY CROPS -(Abstract Only)   Reding, M.E., Zhu, H., Derksen, R.C. 2005. Drip irrigation as a delivery system for imidacloprid and nematodes for control of scarab grubs in nursery crops [Abstract]. Presented at Natinal Meeting of the Entomological Society of America, December 14-18, 2005, Ft. Lauderdale, FL.   
- Effects of Air-Assisted and Conventional Spray Delivery Systems on Management of Soybean Diseases -(Peer Reviewed Journal)   Derksen, R.C., Zhu, H., Ozkan, H.E., Dorrance, A.E., Krause, C.R. 2006. Effects of Air-Assisted and Conventional Spray Delivery Systems on Management of Soybean Diseases. International Advances in Pesticide Application--Aspects of Applied Biology. 77:415-422.   
- WIND TUNNEL EVALUATION OF DRIFT REDUCTION POTENTIAL WITH AIR INDUCTION NOZZLES, LOW PRESSURE CONVENTIONAL NOZZLES AND DRIFT RETARDANTS -(Abstract Only)   Guler, H., Zhu, H., Ozkan, H.E., Derksen, R.C., Krause, C.R. 2006. Wind tunnel evaluation of drift reduction potential with air induction nozzles, low pressure conventional nozzles and drift retardants [Abstract]. In: 26th Symposium on Pesticide Formulation and Delivery Systems: Reassessing Pesticide Technologies, October 18-20, 2005, Dallas, Texas. p. 30.   
- DRIFTSIM - Predicting Drift Distances of Spray Droplets -(Peer Reviewed Journal)   Zhu, H., Fox, R.D., Ozkan, E. 2005. Driftsim - Predicting Drift Distances of Spray Droplets. Software and User Manual Public Release.   
- MONITORING WATER USE, NUTRIENT MANAGEMENT, DRAINAGE AND LEACHATE IN POT-IN-POT NURSERY CONTAINER PRODUCTION -(Proceedings)   Zhu, H., Krause, C.R., Zondag, R. 2005. Monitoring water use, nutrient management, drainage and leachate in pot-in-pot nursery container production. In: 9th International Congress on Mechanization and Energy in Agriculture and 27th International Conference of CIGR, September 27-29, 2005, Izmir-Turkey. p. 264-269.   
- COMPARISON OF AIRBORNE AND GROUND SPRAY DEPOSITS WITH HOLLOW CONE NOZZLE, LOW DRIFT NOZZLE AND DRIFT RETARDANT -(Proceedings)   Zhu, H., Guler, H., Derksen, R.C., Ozkan, H.E. 2005. Comparison of airborne and ground spray deposits with hollow cone nozzle, low drift nozzle and drift retardant. In: Proceedings of the 9th International Congress on Mechanization and Energy in Agriculture and 27th International Conference of CIGR, September 27-29, 2005, Izmir-Turkdy. p. 73-78.   
- Spray Deposition and Off-Target Loss in Nursery Tree Crops with Conventional Nozzle, Air Induction Nozzle and Drift Retardant -(Proceedings)   Zhu, H., Derksen, R.C., Krause, C.R., Brazee, R.D., Zondag, R., Fox, R.D., Reding, M.E., Ozkan, E.H. 2005. Spray Deposition and Off-Target Loss in Nursery Tree Crops with Conventional Nozzle, Air Induction Nozzle and Drift Retardant. ASAE Annual International Meeting. Paper No. 051007.   
- A Windows Version of DRIFTSIM for Estimating Drift Distances of Droplets -(Proceedings)   Zhu, H., Fox, R.D., Ozkan, H.E. 2005. A Windows Version of DRIFTSIM for Estimating Drift Distances of Droplets. ASAE Annual International Meeting. Paper No. 051145.   
- A Transponder for Harmonic Radar Tracking of the Black Vine Weevil in Behavioral Research -(Peer Reviewed Journal)   Brazee, R.D., Miller, E.S., Reding, M.E., Klein, M.G., Zhu, H., Nudd, B.E. 2005. A Transponder for Harmonic Radar Tracking of the Black Vine Weevil in Behavioral Research. Transactions of the ASAE. 48(2):831-838.   
- CONSIDERATIONS FOR THE DESIGN AND INSTALLATION OF SDI SYSTEMS IN HUMID AREAS -(Proceedings)   Grabow, G.L., Harrison, K., Dukes, M.D., Vories, E.D., Smith, W.B., Zhu, H., Khalilian, A. 2005. Considerations for the design and installation of SDI systems in humid areas. In: Proceedings of the World Water and Environmental Resources Congress. American Society of Civil Engineers, Reston, VA. Available: http://ascelibrary.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=ASCECP000173040792000518000001&idtype=cvips   
- IDENTIFYING COMMON REFLECTANCE PROPERTIES IN DIVERSE ORNAMENTAL SPECIES TO NON-DESTRUCTIVELY DETERMINE NITROGEN STATUES -(Abstract Only)   Frantz, J., Pitchay, D., Ritchie, G., Zhu, H. 2005. Identifying common reflectance properties in diverse ornamental species to non-destructively determine nitrogen statues. Hortscience.  40(4):1060.   
- A New System to Monitor Water and Nutrient use Efficiency in Pot-in-Pot Nursery Production System -(Peer Reviewed Journal)   Zhu, H., Krause, C.R., Zondag, R.H., Brazee, R.D., Derksen, R.C., Reding, M.E., Fausey, N.R. 2005. A New System to Monitor Water and Nutrient use Efficiency in Pot-in-Pot Nursery Production System. Journal of Environmental Horticulture. 23(1):47-53.   
- Effect of Solution pH Conditions on Fluorescence of Spray Deposition Tracers -(Peer Reviewed Journal)   Zhu, H., Derksen, R.C., Krause, C.R., Fox, R.D., Brazee, R.D., Ozkan, H.E. 2005. Effect of Solution pH Conditions on Fluorescence of Spray Deposition Tracers. Applied Engineering in Agriculture. 21(3):325-329.   
- IMPACT OF SPRINKLER IRRIGATION AMOUNT AND ROTATION ON PEANUT YIELD -(Peer Reviewed Journal)   Lamb, M.C., Rowland, D., Sorensen, R.B., Zhu, H., Blankenship, P.D., Butts, C.L. 2005. Impact of sprinkler irrigation amount and rotation on peanut yield. Peanut Science.  31:108-113   
- PRELIMINARY INVESTIGATION OF WATER AND NUTRIENT USE, SUBSTRATE TEMPERATURE AND MOISTURE IN POT-IN-POT PRODUCTION -(Research Notes)   Zhu, H., Zondag, R.H., Krause, C.R., Derksen, R.C., Demaline, T. 2005. Preliminary investigation of water and nutrient use, substrate temperature and moisture in pot-in-pot production. Extension Circular 195. pp. 135-144.   
- APPLICATION OF IMIDACLOPRID THROUGH DRIP IRRIGATION FOR CONTROL OF WHITE GRUBS IN FIELD-GROWN NURSERY CROPS -(Research Notes)   Reding, M.E., Zhu, H., Zondag, R. 2005. Application of imidacloprid through drip irrigation for control of white grubs in field-grown nursery crops. Extension Circular 195.  p. 131-134.   
- Fluorescent Intensity of Dye Solutions under Different pH Conditions -(Peer Reviewed Journal)   Zhu, H., Derksen, R.C., Krause, C.R., Fox, R.D., Brazee, R.D., Ozkan, E.H. 2005. Fluorescent Intensity of Dye Solutions under Different pH Conditions. American Society for Testing and Materials. 2(6):1-7.   
- Real-Time Measurement of Drainage From Pot-in-Pot Container Nurseries -(Peer Reviewed Journal)   Zhu, H., Krause, C.R., Derksen, R.C., Brazee, R.D., Zondag, R., Fausey, N.R. 2004. Real-Time Measurement of Drainage From Pot-in-Pot Container Nurseries. Transactions of the ASAE. 47(6):1973-1979.   
- RESEARCH TO REDUCE POTENTIAL DAMAGE FROM SPRAY DRIFT LOSS BY THE USDA-ARS APPLICATION TECHNOLOGY RESEARCH UNIT -(Proceedings)   Derksen, R.C., Zhu, H., Krause, C.R., Ozkan, H.E., Fox, R.D., Brazee, R.D. 2004. Research to reduce potential damage from spray drift loss by the USDA-ARS Application Technology Research Unit. Proceedings of International Drift on Pesticide Application for Drift Management Meeting, October 27-29, 2005. Waikoloa, Hawaii. p. 414-421.   
- DRIFTSIM -- A USER-FRIENDLY COMPUTER PROGRAM TO PREDICT DRIFT DISTANCES OF DROPLETS -(Proceedings)   Zhu, H., Fox, R.D., Ozkan, H.E., Derksen, R.C., Krause, C.R. 2004. An application computer program (DRIFTSIM) to predict drift distances of water droplets from field sprayers. In: Ramsay, C., Hewitt, A. , Thistle, H., Hoffman, C., Wold, R., Wolf, T. (editors) Proceedings of International Conference on Pesticide Application for Drift Management.  October 27-29, 2004. Waikoloa, Hawaii. p. 317-323.   
- NEW TECHNIQUES FOR MONITORING DRIP IRRIGATION WATER USE EFFICIENCY, DRAINAGE, AND LEACHATE IN CONTAINERS -(Proceedings)   Zhu, H., Krause, C.R., Derksen, R.C., Zondag, R.H., Brazee, R.D., Fausey, N.R. 2004. New techniques for monitoring drip irrigation water use efficiency, drainage, and leachate in containers. ASAE Annual International Meeting. Paper No. 042247.   
- DEVELOPMENT OF HARMONIC RADAR TRANSPONDERS TO TRACK BLACK VINE WEEVIL BEHAVIOR IN NURSERIES -(Proceedings)   Brazee, R.D., Zhu, H., Miller, E.S., Reding, M.E., Klein, M.G., Nudd, B.E. 2004. Development of harmonic radar transponders to track black vine weevil behavior in nurseries. ASAE Annual International Meeting. Paper No. 041033.   
- SPRAY DEPOSITION IN TAXUS AND AIR VELOCITY PROFILE FOR A FIVE-PORT, AIR-ASSIST SPRAYER -(Proceedings)   Zhu, H., Derksen, R.C., Fox, R.D., Brazee, R.D., Fox, R.D., Ozkan, H.E. 2004. Spray deposition in taxus and air velocity profile for a five-port, air-assist sprayer. ASAE Annual International Meeting. Paper No. 041032.   
- Diffusion Model for Plant Cuticular Penetration by Spray-Applied Weak Organic Acid Bioregulator in Presence or Absence of Ammonium Nitrate -(Peer Reviewed Journal)   Brazee, R.D., Bukovac, M.J., Zhu, H. 2004. Diffusion Model for Plant Cuticular Penetration by Spray-Applied Weak Organic Acid Bioregulator in Presence or Absence of Ammonium Nitrate. Transactions of the ASAE. 47(3):629-635.   
- Detection and Quantification of Nursery Spray Penetration and Off-Target Loss with Electron Beam and Conductivity Analysis -(Peer Reviewed Journal)   Krause, C.R., Zhu, H., Derksen, R.C., Brazee, R.D., Fox, R.D., Horst, L., Zondag, R.H. 2004. Detection and Quantification of Nursery Spray Penetration and Off-Target Loss with Electron Beam and Conductivity Analysis. Transactions of the ASAE. 47(2):375-384.   
- DETERMINATION OF WATER QUALITY, WATER USE EFFICIENCY AND WATER RUNOFF IN POT-IN-POT NURSERIES -(Research Notes)   Krause, C.R., Zhu, H., Zondag, R., Shipitalo, M.J., Williams, K.A., Brazee, R.D., Derksen, R.C., Reding, M.E., Demaline, T. 2004. Determination of water quality, water use efficiency and water runoff in pot-in-pot nurseries. Extension Publications. 193:78-83.   
- THE USDA, AGRICULTURAL RESEARCH SERVICE RESEARCH WEATHER STATION NETWORK IN NORTHERN OHIO NURSERIES -(Research Notes)   Brazee, R.D., Williams, K.A., Lohnes, D., Derksen, R.C., Zhu, H., Zondag, R., Krause, C.R. 2004. The USDA, Agricultural Research Service research weather station network in northern Ohio nurseries. Extension Publications. 193:190-193.   
- SPRAY PENETRATION INTO PEANUT CANOPIES WITH HYDRAULIC NOZZLE TIPS -(Peer Reviewed Journal)   Zhu, H., Dorner, J.W., Rowland, D., Derksen, R.C., Ozkan, H.E. 2004. Spray penetration into peanut canopies with hydraulic nozzle tips. Biosystems Engineering. 87:275-283.   
- IMPROVING PEANUT YIELD AND GRADE WITH SURFACE DRIP IRRIGATION IN UNDULATING TOPOGRAPHIC FIELDS -(Peer Reviewed Journal)   Zhu, H., Lamb, M.C., Butts, C.L., Blankenship, P.D. 2004. Improving peanut yield and grade with surface drip irrigation in undulating topographic fields. Transactions of the ASAE. Paper 032098.   
- AN IMPLEMENT TO INSTALL AND RETRIEVE SURFACE DRIP IRRIGATION LATERALS -(Peer Reviewed Journal)   Heping, Z, Butts, C.L., Lamb, M.C., Blankenship, P.D.. 2004.An implement to install and retrieve surface drip irrigation laterals. Applied Engineering in Agriculture. 20(1):17-23.   
- RESEARCH AT THE NPRL SHELLMAN IRRIGATION RESEARCH FARM -(Abstract Only)   LAMB, M.C., ROWLAND, D., SORENSEN, R.B., ZHU, H., BLANKENSHIP, P.D., BUTTS, C.L. RESEARCH AT THE NPRL SHELLMAN IRRIGATION RESEARCH FARM. AMERICAN PEANUT RESEARCH AND EDUCATION SOCIETY ABSTRACTS. 2003. Vol. 35. www.apres.okstate.edu   
- RESEARCH AT THE NPRL SHELLMAN IRRIGATION RESEARCH FARM -(Abstract Only)   Lamb, M.C., Rowland, D., Sorensen, R.B., Zhu, H., Blankenship, P.D., Butts, C.L. 2004. Research at the nprl shellman irrigation research farm. American Peanut Research and Education Society Abstracts.  Vol. 35. www.apres.okstate.edu.   
- PEANUT PRODUCTION IN TOPOGRAPHIC FIELDS WITH SURFACE DRIP IRRIGATION -(Abstract Only)   Zhu, H., Lamb, M.C., Butts, C.L., Blankenship, P.D. 2003. Peanut production in topographic fields with surface drip irrigation. American Peanut Research and Education Society Abstracts.   
- INFLUENCE OF PLANT STRUCTURE, ORIFICE SIZE AND NOZZLE INCLINATION ON SPRAY PENETRATION INTO PEANUT CANOPY -(Peer Reviewed Journal)     
- A VARIABLE FLOW CONTROL SYSTEM FOR SUBSURFACE DRIP IRRIGATION* -(Proceedings)   Zhu, H., D. L. Rowland, J. W. Dorner, R. C. Derksen, R. B. Sorensen.  Influence of plant structure, orifice size and nozzle inclination on spray penetration into peanut canopy.  Applied Eng. in Agric. 2002. v.45(5). p.5-1301.   
- A PRESSURE REGULATING SYSTEM FOR VARIABLE IRRIGATION FLOW CONTROLS -(Peer Reviewed Journal)   Sorensen, R. B., F. S. Wright. Soil temperature in the peanut pod zone with subsurface drip irrigation. Peanut Sci. 2002. v.(2)29: p.115-122.   
- IMPROVING SPRAY PENETRATION INTO PEANUT CANOPIES AT DIFFERENT GROWING STAGES WITH PROPER NOZZLE SELECTIONS -(Proceedings)   Zhu, H., Dorner, J.W., Rowland, D. 2002. Improving spray penetration into peanut canopies at different growing stages with proper nozzle selections. Journal of the Agricultural Association of China.   
- IMPROVING PEANUT PRODUCTION WITH SURFACE DRIP IRRIGATION -(Abstract Only)   -   
- INFLUENCE OF PLANT STRUCTURE, ORIFICE SIZE AND NOZZLE INCLINATION ON SPRAY PENETRATION INTO PEANUT CANOPY -(Peer Reviewed Journal)   Zhu, H., Rowland, D., Dorner, J.W., Derksen, R.C., Sorensen, R.B. 2002. INFLUENCE OF PLANT STRUCTURE, ORIFICE SIZE AND NOZZLE INCLINATION ON SPRAY PENETRATION INTO PEANUT CANOPY. Transactions of the ASABE. v45(5): p1295-1301.   

- Projects Coordinated Precision Application Technologies for Sustainable Pest Management and Crop ProtectionIn-House Appropriated (D) Accession Number:437778Technical Support for New Test Material of ISO sprayer Cleanout StandardReimbursable Cooperative Agreement (R) Accession Number:443498Development of a Computer Program to Predict Spray Droplet Displacement Discharged from Intelligent SprayersNon-Assistance Cooperative Agreement (S) Accession Number:436516Using Intelligent Sprayer Technology to Enhance Economic and Environmental Sustainability in Nurseries and Apple OrchardsNon-Assistance Cooperative Agreement (S) Accession Number:436583Improving Sensor Detection Accuracy for Greenhouse Intelligent Sprayer DevelopmentNon-Assistance Cooperative Agreement (S) Accession Number:436938Improve Spray Droplet Retention Capabilities on Targets with Amendment of Spray Solution PropertiesNon-Assistance Cooperative Agreement (S) Accession Number:438488Implementation of Variable-Rate Airflow to Intelligent Sprayers Used in Apple OrchardsNon-Assistance Cooperative Agreement (S) Accession Number:440865Integration of Intelligent Spray Technology into IPM Programs in Specialty Crop ProductionNon-Assistance Cooperative Agreement (S) Accession Number:442525Return to top                Last Modified:8/21/2023            Connect with ARSSign up-  ARS Home 
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