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                    U.S. DEPARTMENT OF AGRICULTURE
 Poultry Production and Product Safety Research: Fayetteville, AR
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ARS Home Southeast Area Fayetteville, Arkansas Poultry Production and Product Safety Research People & Locations







Amanda J Ashworth

                                                                (PhD)
                        Poultry Production and Product Safety Research

                        




                        
                        Soil Scientist
                        Phone: (479) 575-6916
                        
                        
                        Fax: (Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)
                            ProjectsAdvancing the State of Soil Information on U.S. Tribal Lands for Improved Food Security
                                                    Cooperative Agreement
                                                                    (A)Accession Number: 442334Coupling Human and Machine Knowledge to Optimize Tribal Food Systems - University of Arizona
                                                    Cooperative Agreement
                                                                    (A)Accession Number: 442337Fostering Resilience and Ecosystem Services in Landscapes by Integrating Diverse Perennial Circular Systems - Univ of TX in Arlington
                                                    Cooperative Agreement
                                                                    (A)Accession Number: 442344Developing Best Management Practices for Poultry Litter to Improve Agronomic Value and Reduce Air, Soil and Water Pollution
                                                    In-House Appropriated
                                                                    (D)Accession Number: 441109Coupling Human and Machine Knowledge to Optimize Tribal Food Systems
                                                    Interagency Reimbursable Agreement
                                                                    (I)Accession Number: 442180Land Suitability Analysis for Olive and Maize Crop in Agroforestry System by Using Machine Learning Algorithms
                                                    Non-Funded Cooperative Agreement
                                                                    (N)Accession Number: 441675Fostering Resilience and Ecosystem Services in Landscapes by Integrating Diverse Perennial Circular Systems (RESILIENCE CAP)
                                                    Reimbursable Cooperative Agreement
                                                                    (R)Accession Number: 441219Systems-based Integrated Program for Enhancing the Sustainability of Antibiotic Restricted Poultry Production
                                                    Reimbursable Cooperative Agreement
                                                                    (R)Accession Number: 439421Improving the Economic and Ecological Sustainability of US Crop Production through On-Farm Precision Experimentation
                                                    Reimbursable Cooperative Agreement
                                                                    (R)Accession Number: 439520Climate States and Climate Changes Observed and Projected in the Mississippi Embayment Aquifer Region from 1981 to 2060
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 440531Managing Nutrients and Carbon to Optimize Agroecosystem Productivity and Resilience
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 436578Scaling Up Potential Antibiotic Resistant Gene Transport to Groundwater in Karst Geologies through Digital Tools
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 442213Coupling Human and Machine Knowledge to Optimize Tribal Food Systems
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 442791USDA ARS Research Apprenticeship Program at University of Texas at Arlington
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 442862Water and Light Use Efficiency of Native Grasses in a Silvopasture System
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 443530Developing Best Management Practices, Tools, and Technologies to Optimize Sustainable Water Use in the Lower Mississippi River Basin
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 443868Using Soil and Water Health Assessment Tools to Identify Best Management Strategies
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 443937**Publications**
                                                (Clicking on the reprint icon
                                                    Reprint Icon
                                                    will take you to the publication reprint.)Native warm-season grass response to nitrogen fertilization
                                                        

- (Peer Reviewed Journal)Bisangwa, E., Keyser, P., Walker, F., Richwiine, J., Ashworth, A.J. 2024. Native warm-season grass response to nitrogen fertilization. Agronomy Journal. 14(1). Article 180. https://doi.org/10.3390/agronomy14010180.Insect frass composition and potential use as an organic fertilizer in circular economies
                                                        

- (Peer Reviewed Journal)Amorim, H., Ashworth, A.J., Arsi, K., Rojas, M.G., Morales Ramos, J.A., Donoghue, A.M., Robinson, K. 2024. Insect frass composition and potential use as an organic fertilizer in circular economies. Journal of Economic Entomology. Article toad234. https://doi.org/10.1093/jee/toad234.Using partial least squares and regression to interpret temperature and precipitation effects on maize and soybean genetic variance expression
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Allen, F., Saxton, A. 2023. Using partial least squares and regression to interpret temperature and precipitation effects on maize and soybean genetic variance expression. Agronomy Journal. 13(11). Article 13112752. https://doi.org/10.3390/agronomy13112752.Hyperspectral reflectance and machine learning to monitor legumes for feed quality

- (Abstract Only)Short term effects of composted digestate on soil health and crop yield: Implication for sustainable waste management in the bioenergy sector
                                                        

- (Peer Reviewed Journal)Gurmessa, B., Cocco, S., Cardelli, V., Ilari, A., Serrani, D., Ashworth, A.J., Fornasier, F., Del Gatto, A., Pedretti, E.F., Corti, G. 2024. Short term effects of composted digestate on soil health and crop yield: Implication for sustainable waste management in the bioenergy sector. Science of the Total Environment. 906. Article 167208. https://doi.org/10.1016/j.scitotenv.2023.167208.Long-term impacts of conservation pasture management in manuresheds on system-level microbiome and antibiotic resistance genes
                                                        

- (Peer Reviewed Journal)Seyoum, M., Ashworth, A.J., Feye, K.M., Owens, P.R., Moore Jr, P.A., Rickie, S., Savin, M. 2023. Long-term impacts of conservation pasture management in manuresheds on system-level microbiome and antibiotic resistance genes. Frontiers in Microbiology. 14. Article 1227006. https://doi.org/10.3389/fmicb.2023.1227006.Framework to develop an open-source forage data network to improve primary productivity and enhancing system resiliency
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Marshall, L., Volenec, J., Casler, M., Berti, M., Van Santen, E., William, C., Gopakumar, V., Foster, J., Propst, T., Picasso, V., Jianzhong, S. 2023. Framework to develop an open-source forage data network to improve primary productivity and enhancing system resiliency. Agronomy Journal. 115(6):3062-3073. https://doi.org/10.1002/agj2.21441.Relationships among apparent electrical conductivity and plant and terrain data in an agroforestry system in the Ozark Highlands
                                                        

- (Peer Reviewed Journal)Ylagan, S., Brye, K.R., Ashworth, A.J., Owens, P.R., Smith, H., Poncet, A.M., Sauer, T.J., Thomas, A.L., Philipp, D. 2023. Relationships among apparent electrical conductivity and plant and terrain data in an agroforestry system in the Ozark Highlands. Agrosystems, Geosciences & Environment. 6(3):1-16. https://doi.org/10.1002/agg2.20414.Boundary line analysis and machine learning models to identify critical soil values for major crops in Guatemala
                                                        

- (Peer Reviewed Journal)Smith, H., Ashworth, A.J., Nalley, L., Schmidt, A., Turmel, M., Owens, P.R. 2023. Boundary line analysis and machine learning models to identify critical soil values for major crops in Guatemala. Agronomy Journal. 1-17.  https://doi.org/10.1002/agj2.21412.Soil Management Assessment Framework (SMAF) in temperate and subtropical agroecosystems: A comparative analysis

- (Abstract Only)Poultry litter physiochemical characterization based on production conditions for circular systems
                                                        

- (Peer Reviewed Journal)Katuwal, S., Nur-Al-Sarah, R., Ashworth, A.J., Kolar, P. 2023. Poultry litter physiochemical characterization based on production conditions for circular systems. BioResources. 18(2):3961-3977. https://www.doi.org/10.15376/biores.18.2.3961-3977.An evaluation of nitrogen indicators for soil health in long-term agricultural experiments
                                                        

- (Peer Reviewed Journal)Liptzin, D., Rieke, E.L., Cappellazzi, S.B., Mac Bean, G., Cope, M., Greub, K.H., Norris, C.E., Tracy, P.W., Aberle, P.W., Ashworth, A.J., Baumhardt, R.L., Dell, C.J., Derner, J.D., Ducey, T.F., Dungan, R.S., Fortuna, A., Franzluebbers, A.J., Kautz, M.A., Kitchen, N.R., Leytem, A.B., Liebig, M.A., Moore Jr, P.A., Osborne, S.L., Owens, P.R., Sainju, U.M., Sherrod, L.A., Watts, D.B. 2023. An evaluation of nitrogen indicators for soil health in long-term agricultural experiments. Soil Science Society of America Journal. 87(4):868-884. https://doi.org/10.1002/saj2.20558.Eddy covariance assessment of alternate wetting and drying floodwater management on rice methane emissions
                                                        

- (Peer Reviewed Journal)Anapalli, S.S., Pinnamaneni, S.R., Reddy, K.N., Wagle, P., Ashworth, A.J. 2023. Eddy covariance assessment of alternate wetting and drying floodwater management on rice methane emissions. Heliyon. 9(4):e14696. https://doi.org/10.1016/j.heliyon.2023.e14696.Identification and delineation of broad-base agricultural terraces in flat landscapes in Northeastern Oklahoma, USA
                                                        

- (Peer Reviewed Journal)Winzeler, H.E., Owens, P.R., Kharel, T.P., Ashworth, A.J., Libohova, Z. 2023. Identification and delineation of broad-base agricultural terraces in flat landscapes in Northeastern Oklahoma, USA. Land. 12(2):486. https://doi.org/10.3390/land12020486.Trace metal uptake in forage systems receiving long-term applications of alum-treated or untreated poultry litter
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Moore Jr, P.A. 2023. Trace metal uptake in forage systems receiving long-term applications of alum-treated or untreated poultry litter. Crop Science. 63(3):1634–1645. https://doi.org/10.1002/csc2.20918.Forage Data Hub – A platform for sharing valuable datasets for resilience

- (Proceedings)Using apparent electrical conductivity to delineate field variation in an agroforestry system in the Ozark Highlands
                                                        

- (Peer Reviewed Journal)Ylangan, S., Brye, K.R., Ashworth, A.J., Owens, P.R., Smith, H., Poncet, A.M. 2022. Using apparent electrical conductivity to delineate field variation in an agroforestry system in the Ozark Highlands. Remote Sensing. 14(22).  Article 5777. https://doi.org/10.3390/rs14225777.Topographic wetness index as a proxy for soil moisture in a hillslope catena: flow algorithms and map generalization
                                                        

- (Peer Reviewed Journal)Winzeler, H.E., Owens, P.R., Read, Q.D., Libohova, Z., Ashworth, A.J., Sauer, T.J. 2022. Topographic wetness index as a proxy for soil moisture in a hillslope catena: flow algorithms and map generalization. Land. 11(11):2018. https://doi.org/10.3390/land11112018.Perenniality drives multifunctional forage-biomass filter strips’ ability to improve water quality
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Katuwal, S., Moore Jr, P.A., Adams, T.C., Anderson, K.R., Owens, P.R. 2022. Perenniality drives multifunctional forage-biomass filter strips’ ability to improve water quality. Crop Science. 63:336–348. https://doi.org/10.1002/csc2.20878.Characterization of nutrient runoff from perennial and annual forages following broiler litter application
                                                        

- (Peer Reviewed Journal)Katuwal, S., Ashworth, A.J., Moore Jr, P.A., Owens, P.R. 2022. Characterization of nutrient runoff from perennial and annual forages following broiler litter application. Journal of Environmental Quality. 52(1):88–99. https://doi.org/10.1002/jeq2.20425.Evaluation of aggregate stability methods for soil health
                                                        

- (Peer Reviewed Journal)Rieke, E.L., Bagnall, D.K., Morgan, C., Greub, K., Bean, G.M., Cappellazzi, S.B., Cope, M., Liptzin, D., Norris, C.E., Tracy, P.W., Ashworth, A.J., Baumhardt, R.L., Dell, C.J., Derner, J.D., Ducey, T.F., Fortuna, A., Kautz, M.A., Kitchen, N.R., Leytem, A.B., Liebig, M.A., Moore Jr., P.A., Osborne, S.L., Owens, P.R., Sainju, U.M., Sherrod, L.A., Watts, D.B., et al. 2022. Evaluation of aggregate stability methods for soil health. Geoderma. 428. Article 116156. https://doi.org/10.1016/j.geoderma.2022.116156.Characterization of poultry litter biochar and activated biochar as a soil amendment for valorization
                                                        

- (Peer Reviewed Journal)Katuwal, S., Ashworth, A.J., Rafsan, N., Praveen, K. 2022. Characterization of poultry litter biochar and activated biochar as a soil amendment for valorization. Biomass. 2(4):209-223. https://doi.org/10.3390/biomass2040014.GIS-based evaluation of soil suitability for optimized production on U.S. Tribal Lands
                                                        

- (Peer Reviewed Journal)Smith, H.W., Ashworth, A.J., Owens, P.R. 2022. GIS-based evaluation of crop and soil suitability for optimized production on U.S. Tribal Lands. Agriculture. 12(9). Article 1307. https://doi.org/10.3390/agriculture12091307.Doing research on U.S. Tribal Lands: Strengthening nation-to-nation collaborations
                                                        

- (Popular Publication)Ashworth, A.J. 2022. Doing research on U.S. Tribal Lands: Strengthening nation-to-nation collaborations. CSA News. Article 20888. 1-2. https://doi.org/10.1002/csan.20888.Evaluation of five C4 forages grasses in the tall Fescue Belt
                                                        

- (Peer Reviewed Journal)Keyser, P.D., Zechiel, K.E., Bates, G.E., Ashworth, A.J., Nave, R.L., Rhinehart, J.D., McIntosh, D.W. 2022. Evaluation of five C4 forages grasses in the tall Fescue Belt. Agronomy Journal. 114:3347-3357. https://doi.org/10.1002/agj2.21195.Applications and analytical methods of ground penetrating radar for soil characterization in a silvopastoral system
                                                        

- (Peer Reviewed Journal)Smith, H.W., Owens, P.R., Ashworth, A.J. 2023. Applications and analytical methods of ground penetrating radar for soil characterization in a silvopastoral system. Journal of Environmental and Engineering Geophysics. 27:4. https://doi.org/10.32389/JEEG22-001.Evaluating how operator experience level affects efficieny gains for precision agricultural tools
                                                        

- (Peer Reviewed Journal)Kharel, T.P., Ashworth, A.J., Owens, P.R. 2022. Evaluating how operator experience level affects efficieny gains for precision agricultural tools. Agricultural & Environmental Letters. https://doi.org/10.1002/ael2.20085.Monitoring and assessment of reclamation at tar creek superfund site using timeseries satellite imagery

- (Abstract Only)Twenty-year phosphorus trends in forage systems receiving aluminum sulfate-treated poultry litter
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Moore Jr., P.A., Bacon, T., Martin, J.W., Anderson, K.R. 2022. Twenty-year phosphorus trends in forage systems receiving aluminum sulfate-treated poultry litter. Agronomy Journal. 114(4):2310-2319. https://doi.org/10.1002/agj2.21132.An evaluation of carbon indicators of soil health in long-term agricultural experiments
                                                        

- (Peer Reviewed Journal)Liptzin, D., Norris, C.E., Cappellazzi, S.B., Bean, G.M., Cope, M., Greub, K.L., Rieke, E.L., Tracy, P.W., Aberle, E., Ashworth, A.J., Baumhardt, R.L., Dell, C.J., Derner, J.D., Ducey, T.F., Novak, J.M., Dungan, R.S., Fortuna, A., Kautz, M.A., Kitchen, N.R., Leytem, A.B., Liebig, M.A., Moore Jr., P.A., Osborne, S.L., Owens, P.R., Sainju, U.M., Sherrod, L.A., Watts, D.B. 2022. An evaluation of carbon indicators of soil health in long-term agricultural experiments. Soil Biology and Biochemistry. 172. Article 108708. https://doi.org/10.1016/j.soilbio.2022.108708.Selecting soil hydraulic properties as indicators of soil health: Measurement response to management and site characteristics
                                                        

- (Peer Reviewed Journal)Bagnall, D.K., Morgan, C., Bean, G.M., Liptzin, D., Cappellazzi, S., Cope, M., Greub, K.L., Norris, C.E., Rieke, E.L., Tracy, P.W., Ashworth, A.J., Baumhardt, R.L., Dell, C.J., Derner, J.D., Ducey, T.F., Fortuna, A., Kautz, M.A., Kitchen, N.R., Leytem, A.B., Liebig, M.A., Moore Jr, P.A., Osborne, S.L., Owens, P.R., Sainju, U.M., Sherrod, L.A., Watts, D.B. 2022. Selecting soil hydraulic properties as indicators of soil health: Measurement response to management and site characteristics. Soil Science Society of America Journal. 86(5):1206-1226. https://doi.org/10.1002/saj2.20428.Preferential transport of phosphorus from surface-applied poultry litter in soils from karst and non-karst landscapes
                                                        

- (Peer Reviewed Journal)Katuwal, S., Ashworth, A.J., Moore Jr, P.A., Brye, K., Schmidt, M.D., Vanotti, M.B., Owens, P.R. 2022. Preferential transport of phosphorus from surface-applied poultry litter in soils from karst and non-karst landscapes. Soil Science Society of America Journal. 86:1002-1014. https://doi.org/10.1002/saj2.20424.Environmental impact assessment of tractor guidance systems based on pasture management scenarios
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Putman, B., Kharel, T.P., Thoma, G., Shew, A., Popp, M., Owens, P.R. 2022. Environmental impact assessment of tractor guidance systems based on pasture management scenarios. Journal of the ASABE. 65(3):645-653. https://doi.org/10.13031/ja.14930.Evaluation of a threonine fermentation product as a digestible threonine source in broilers
                                                        

- (Peer Reviewed Journal)Lee, T., Lee, J., Ashworth, A.J., Kidd, M.T., Mauromoustakos, A., Rochell, S. 2022. Evaluation of a threonine fermentation product as a digestible threonine source in broilers. Journal of Applied Poultry Research. 31. Article 100252. https://doi.org/10.1016/j.japr.2022.100252.Relationships between land use and stream chemistry in
the Mulberry River Basin, Arkansas
                                                        

- (Peer Reviewed Journal)Burgess-Conforti, J.R., Moore Jr, P.A., Owens, P.R., Miller, D.M., Ashworth, A.J., Hayes, P.D., Evans-White, M.A., Anderson, K.R. 2022. Relationships between land use and stream chemistry in the Mulberry River Basin, Arkansas. River Research and Applications. 38(6):1031-1040. https://doi.org/10.1002/rra.3970.Soil organic carbon and nutrients affected by tree species and poultry litter in a 17-year agroforestry site
                                                        

- (Peer Reviewed Journal)Amorim, H., Ashworth, A.J., Zinn, Y.L., Sauer, T.J. 2022. Soil organic carbon and nutrients affected by tree species and poultry litter in a 17-year agroforestry site. Agronomy Journal. 12(3). Article 641. https://doi.org/10.3390/agronomy12030641.Subsurface banding poultry litter influences edamame yield,
forage quality, and leaf greenness
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Nieman, C.C., Adams, T.C., Franco Jr, J.G., Owens, P.R. 2022. Subsurface banding poultry litter influences edamame yield, forage quality, and leaf greenness. Agronomy Journal. 114(3):1833-1841. 10.1002/agj2.21048.Linking soil microbial community structure to potential carbon mineralization: A continental scale assessment of reduced tillage
                                                        

- (Peer Reviewed Journal)Reike, E., Cappellazzi, S.B., Cope, M., Liptzin, D., Bean, G.M., Greub, K.L., Norris, C.E., Tracy, P.W., Aberle, E., Ashworth, A.J., Baumhardt, R.L., Dell, C.J., Derner, J.D., Ducey, T.F., Fortuna, A., Kautz, M.A., Kitchen, N.R., Moore Jr., P.A., Osborne, S.L., Owens, P.R., Sainju, U.M., Sherrod, L.A., Watts, D.B., et al. 2022. Linking soil microbial community structure to potential carbon mineralization: A continental scale assessment of reduced tillage. Soil Biology and Biochemistry. 168. Article 108618. https://doi.org/10.1016/j.soilbio.2022.108618.Long-term sustainability implications of diverse commercial pollinator mixtures for the conservation reserve program
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Adams, T.C., Jacobs, A. 2022. Long-term sustainability implications of diverse commercial pollinator mixtures for the conservation reserve program. Agronomy Journal. 12(3):549. https://doi.org/10.3390/agronomy12030549.Carbon-sensitive pedotransfer functions for plant available water
                                                        

- (Peer Reviewed Journal)Bagnall, D.K., Morgan, C., Cope, M., Bean, G.M., Cappellazzi, S., Greub, K., Liptzin, D., Norris, C.E., Rieke, E.L., Tracy, P.W., Ashworth, A.J., Baumhardt, R.L., Dell, C.J., Derner, J.D., Ducey, T.F., Fortuna, A., Kautz, M.A., Kitchen, N.R., Moore Jr., P.A., Osborne, S.L., Owens, P.R., Sainju, U.M., Sherrod, L.A., Watts, D.B., et al. 2022. Carbon-sensitive pedotransfer functions for plant available water. Soil Science Society of America Journal. 86(3):612-629. https://doi.org/10.1002/saj2.20395.Spatial monitoring technologies for coupling the soil plant water animal nexus
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Kharel, T.P., Adams, T.C., Sauer, T.J., Philipp, D., Thomas, A., Owens, P.R. 2022. Spatial monitoring technologies for coupling the soil plant water animal nexus. Scientific Reports. 12. Article 3508. https://doi.org/10.1038/s41598-022-07366-2.Carbon-sensitive pedotransfer functions for plant-available water
                                                        

- (Peer Reviewed Journal)Bagnall, D.K., Morgan, C.L., Cope, M., Bean, G.M., Cappellazzi, S.B., Greub, K.L., Liptzin, D., Baumhardt, R.L., Dell, C.J., Derner, J.D., Ducey, T.F., Dungan, R.S., Fortuna, A., Kautz, M.A., Kitchen, N.R., Leytem, A.B., Liebig, M.A., Moore Jr, P.A., Osborne, S.L., Sainju, U.M., Sherrod, L.A., Watts, D.B., Ashworth, A.J., Owens, P.R., et al. 2022. Carbon-sensitive pedotransfer functions for plant-available water. Soil Science Society of America Journal. 86(3):612-629. https://doi.org/10.1002/saj2.20395.Multivariate evaluation of watershed health based on longitudinal pasture management
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Katuwal, S., Moore Jr, P.A., Owens, P.R. 2022. Multivariate evaluation of watershed health based on longitudinal pasture management. Science of the Total Environment. 824. Article 153725. https://doi.org/10.1016/j.scitotenv.2022.153725.Long-term conservation agriculture effects on corn profitability in West Tennessee
                                                        

- (Peer Reviewed Journal)Zhou, X., Larson, J., Sykes, V., Ashworth, A.J., Allen, F.L. 2022. Long-term conservation agriculture effects on corn profitability in West Tennessee. Crop Science. 62:1348-1359. https://doi.org/10.1002/csc2.20727.Linking and sharing technology: Partnerships for data innovations for management of agricultural big data
                                                        

- (Peer Reviewed Journal)Kharel, T.P., Ashworth, A.J., Owens, P.R. 2022. Linking and sharing technology: Partnerships for data innovations for management of agricultural big data. Data. https://doi.org/10.3390/data7020012.Wheat cover crop and seed treatment for improving native warm-season grass establishment
                                                        

- (Peer Reviewed Journal)Keyser, P., Ashworth, A.J. 2022. Wheat cover crop and seed treatment for improving native warm-season grass establishment. Crop, Forage & Turfgrass Management. 8(1). Article e20147. https://doi.org/10.1002/cft2.20147.Evaluating optimum seeding distances from subsurface banding poultry litter in crop rotations
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Nieman, C.C. 2022. Evaluating optimum seeding distances from subsurface banding poultry litter in crop rotations. Agricultural & Environmental Letters. 7(1). Article e20063. https://doi.org/10.1002/ael2.20063.Evaluating tree growth factors into species-specific functional soil maps for improved agroforestry system efficiency
                                                        

- (Peer Reviewed Journal)Jiang, Z., Owens, P.R., Ashworth, A.J., Fuentes, B.A., Thomas, A.L., Sauer, T.J., Wang, Q. 2021. Evaluating tree growth factors into species-specific functional soil maps for improved agroforestry system efficiency. Agroforestry Systems. https://doi.org/10.1007/s10457-021-00693-9.Preferential flow under high-intensity short-duration irrigation events in soil columns from a karst and nonkarst landscape
                                                        

- (Peer Reviewed Journal)Katuwal, S., Ashworth, A.J., Owens, P.R. 2021. Preferential flow under high-intensity short-duration irrigation events in soil columns from a karst and nonkarst landscape. Vadose Zone Journal. 20(6). Article e20160. https://doi.org/10.1002/vzj2.20160.Economic and GHG emissions changes of aeration and gypsum application
                                                        

- (Peer Reviewed Journal)Popp, M., Lindsay, K., Ashworth, A.J., Moore Jr, P.A., Owens, P.R., Adams, T.C., Welch, M., Roark, B., Pote, D., Pennington, J. 2021. Economic and GHG emissions changes of aeration and gypsum application. Agriculture Ecosystems and the Environment. 321. Article 107616. https://doi.org/10.1016/j.agee.2021.107616.Relating topography and soil phosphorus distribution in litter-amended pastures in Arkansas
                                                        

- (Peer Reviewed Journal)Adhikari, K., Braden, I.S., Owens, P.R., Ashworth, A.J., West, C. 2021. Relating topography and soil phosphorus distribution in litter-amended pastures in Arkansas. Agrosystems, Geosciences & Environment. 4. Article e20207. https://doi.org/10.1002/agg2.20207.Teasing apart silvopasture system components using machine learning for optimization
                                                        

- (Peer Reviewed Journal)Kharel, T.P., Ashworth, A.J., Owens, P.R., Philipp, D., Thomas, A.L., Sauer, T.J. 2021. Teasing apart silvopasture system components using machine learning for optimization. Soil Systems. https://doi.org/10.3390/soilsystems5030041.Post-digestate composting shifts microbial composition and degrades antimicrobial resistance genes
                                                        

- (Peer Reviewed Journal)Gurmessa, B., Milanovi, V., Pedretti, E.F., Aquilanti, L., Corti, G., Cocco, S., Ashworth, A.J., Ferrocino, I., Corvaglia, M.R. 2021. Post-digestate composting shifts microbial composition and degrades antimicrobial resistance genes. Bioresource Technology. 340. Article 125662. https://doi.org/10.1016/j.biortech.2021.125662.Post-digestate composting benefits and the role of enzyme activity to predict trace element immobilization and compost maturity
                                                        

- (Peer Reviewed Journal)Gurmessa, B., Cocco, S., Ashworth, A.J., Pedretti, E.F., Illari, A., Cardelli, V., Fornasier, F., Ruello, M.L., Cort, G. 2021. Post-digestate composting benefits and the role of enzyme activity to predict trace element immobilization and compost maturity. Bioresource Technology. 338. Article 125550. https://doi.org/10.1016/j.biortech.2021.125550.Soil quality assessment of an agroforestry system following long-term management in the Ozark Highlands
                                                        

- (Peer Reviewed Journal)Yiagan, S., Amorim, A.J., Ashworth, A.J., Sauer, T.J., Wienhold, B.J., Owens, P.R., Brye, K. 2021. Soil quality assessment of an agroforestry system following long-term management in the Ozark Highlands. Agrosystems, Geosciences & Environment. 4(3). Article e20194. https://doi.org/10.1002/agg2.20194.Root decomposition in silvopastures is influenced by grazing, fertility, and grass species
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Adams, T., Kharel, T.P., Philipp, D., Owens, P.R., Sauer, T.J. 2021. Root decomposition in silvopastures is influenced by grazing, fertility, and grass species. Agrosystems, Geosciences & Environment. 4(3). Article e20190. https://doi.org/10.1002/agg2.20190.Mapping soil properties to advance the state of spatial soil information for greater food security on US Tribal Lands
                                                        

- (Peer Reviewed Journal)Fuentes, B., Ashworth, A.J., Ngunjiri, M., Owens, P.R. 2021. Mapping soil properties to advance the state of spatial soil information for greater food security on US Tribal Lands. Frontiers in Soil Science. 1. Artcle 695386. https://doi.org/10.3389/fsoil.2021.695386.Pasture conservation management effects on soil surface infiltration in hay and grazed systems
                                                        

- (Peer Reviewed Journal)Adams, T.C., Ashworth, A.J., Owens, P.R., Moore Jr, P.A., Popp, M., Pennington, J. 2021. Pasture conservation management effects on soil surface infiltration in hay and grazed systems. Journal of Soil and Water Conservation. 77(1):59-66. https://doi.org/10.2489/jswc.2022.00182.Using a browntop millet companion crop to aid native grass establishment
                                                        

- (Peer Reviewed Journal)Richwine, J., Keyser, P., Hancock, D., Ashworth, A.J. 2021. Using a browntop millet companion crop to aid native grass establishment. Agronomy Journal. 113:3210-3221. https://doi.org/10.1002/agj2.20739.Soil CO2 evolution is driven by forage species, soil moisture, grazing pressure, poultry litter fertilization, and seasonality in silvopastures
                                                        

- (Peer Reviewed Journal)Adams, T.C., Ashworth, A.J., Sauer, T.J. 2021. Soil CO2 evolution is driven by forage species, soil moisture, grazing pressure, poultry litter fertilization, and seasonality in silvopastures. Agrosystems, Geosciences & Environment. 4(2). Article e20179. https://doi.org/10.1002/agg2.20179.Evaluation of a novel poultry litter amendment on greenhouse gas emissions
                                                        

- (Peer Reviewed Journal)Anderson, K.R., Moore Jr., P.A., Martin, J.W., Ashworth, A.J. 2021. Evaluation of a novel poultry litter amendment on greenhouse gas emissions. Atmosphere. 12(5). Article 563. https://doi.org/10.3390/atmos12050563.Simulating the feasibility of dual use switchgrass on cow-calf operations
                                                        

- (Peer Reviewed Journal)Popp, M., West, C., Ashworth, A.J. 2021. Simulating the feasibility of dual use switchgrass on cow-calf operations. Energies. 14(9):2422. https://doi.org/10.3390/en14092422.Do long-term conservation pasture management practices influence microbial diversity and antimicrobial resistant genes in runoff
                                                        

- (Peer Reviewed Journal)Yang, Y., Ashworth, A.J., Durso, L.M., Savin, M., Debruyan, J., Cook, K.L., Moore Jr., P.A., Owens, P.R. 2021. Do long-term conservation pasture management practices influence microbial diversity and antimicrobial resistant genes in runoff. Frontiers in Microbiology. 12. Article 617066. https://doi.org/10.3389/fmicb.2021.617066.Crop rotation, cover crop, and poultry litter effects on no-tillage cotton profitability
                                                        

- (Peer Reviewed Journal)Zhou, X., Larson, J., Sykes, V., Ashworth, A.J., Allen, F.L. 2021. Crop rotation, cover crop, and poultry litter effects on no-tillage cotton profitability. Agronomy Journal. 113:2648–2663. https://doi.org/10.1002/agj2.20661.Variations in bacterial community structure and antimicrobial resistance genes abundance in cattle manure and poultry litter
                                                        

- (Peer Reviewed Journal)Gurmessa, B., Ashworth, A.J., Yang, Y., Savin, M., Moore Jr, P.A., Ricke, S.C., Corti, G., Foppa Pedretti, E., Cocco, S. 2021. Variations in bacterial community structure and antimicrobial resistance genes abundance in cattle manure and poultry litter. Environmental Research. https://doi.org/10.1016/j.envres.2021.111011.Soil microbial diversity in organic and non-organic pasture systems
                                                        

- (Peer Reviewed Journal)Acharya, M., Yang, Y., Ashworth, A.J., Burke, J.M., Lee, J., Sharma Acharya, R. 2021. Soil microbial diversity in organic and non-organic pasture systems. PeerJ. 9. Article e11184. https://doi.org/10.7717/peerj.11184.Factors affecting sugar accumulation and fluxes in warm- and cool-season forages grown in a silvopastoral system
                                                        

- (Peer Reviewed Journal)Niyigena, V., Ashworth, A.J., Nieman, C.C., Acharya, M., Coffey, K.P., Phillipp, D., Meadors, L., Sauer, T.J. 2021. Factors affecting sugar accumulation and fluxes in warm- and cool-season forages grown in a silvopastoral system. Agronomy. https://doi.org/10.3390/agronomy11020354.Conservation management practices reduce non-point source pollution from grazed pastures
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Moore Jr, P.A., Pote, D.H., Owens, P.R., Martin, J.W., Anderson, K. 2021. Conservation management practices reduce non-point source pollution from grazed pastures. Heliyon. 7(2). Article e06238. https://doi.org/10.1016/j.heliyon.2021.e06238.Soil bacterial diversity based on management and topography in a silvopastoral system
                                                        

- (Peer Reviewed Journal)Gurmessa, B., Ashworth, A.J., Yang, Y., Adhikari, K., Savin, M., Owens, P.R., Sauer, T.J., Pedretti, E.F., Cocco, S., Corti, G. 2021. Soil bacterial diversity based on management and topography in a silvopastoral system. Applied Soil Ecology. 163:103918. https://doi.org/10.1016/J.APSOIL.2021.103918.Agroforestry practices for soil conservation and resilient agriculture
                                                        

- (Book / Chapter)Sauer, T.J., Dold, C., Ashworth, A.J., Nieman, C.C., Hernandez-Ramirez, G., Dirk, P., Gennadiev, A.N., Chendev, Y.G. 2021. In: Udawatta R.P., Jose S. editors. Agroforestry and Ecosystem Services. Cham, Switzerland. Springer. p.19-48. https://doi.org/10.1007/978-3-030-80060-4_2Soil quality indices as affected by long-term burning, irrigation, tillage, and fertility management
                                                        

- (Peer Reviewed Journal)Amorim, H., Ashworth, A.J., Brye, K.R., Wienhold, B.J., Savin, M.C., Owens, P.R., Silva, S. 2021. Soil quality indices as affected by long-term burning, irrigation, tillage, and fertility management. Soil Science Society of America Journal. 85:379-395. https://doi.org/10.1002/saj2.20188.Antimicrobial resistant gene prevalence in soils due to animal manure deposition and long-term pasture management
                                                        

- (Peer Reviewed Journal)Yang, Y., Ashworth, A.J., Debruyn, J., Durso, L.M., Savin, M., Cook, K.L., Moore Jr., P.A., Owens, P.R. 2020. Antimicrobial resistant gene prevalence in soils due to animal manure deposition and long-term pasture management. PeerJ. 8:e10258. https://doi.org/10.7717/peerj.10258.Water-Use efficiency of forage crops in the Southeastern United States
                                                        

- (Peer Reviewed Journal)Gelley, C.H., Ashworth, A.J., Keyser, P.D., Nave, R., Rhinehart, J. 2020. Water-Use efficiency of forage crops in the Southeastern United States. Agronomy. 10(9):1377. https://doi.org/10.3390/agronomy10091377.Tractor path overlap is influenced by field shape and terrain attributes
                                                        

- (Peer Reviewed Journal)Kharel, T.P., Owens, P.R., Ashworth, A.J. 2020. Tractor path overlap is influenced by field shape and terrain attributes. Agricultural & Environmental Letters. 5:e20027. https://doi.org/10.1002/ael2.20027.Comparison of discriminatory effects of corn yield test locations based on their genetic variation expression among hybrids
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Knapp, V., Fred, A., Saxton, A. 2020. Comparison of discriminatory effects of corn yield test locations based on their genetic variation expression among hybrids. Crop Science. 60:3166–3174. https://doi.org/10.1002/csc2.20298.Long-term effects of pasture management and fenced riparian buffers on soil organic carbon content and aggregation
                                                        

- (Peer Reviewed Journal)Xu, S., Jagadamma, S., Ashworth, A.J., Singh, S., Owens, P.R., Moore Jr, P.A. 2020. Long-term effects of pasture management and fenced riparian buffers on soil organic carbon content and aggregation. Geoderma. 382. Article 114666. https://doi.org/10.1016/j.geoderma.2020.114666.Soil quality indices following long-term conservation pasture management practices
                                                        

- (Peer Reviewed Journal)Amorim, H., Ashworth, A.J., Moore Jr, P.A., Wienhold, B.J., Savin, M.C., Owens, P.R., Jagadamma, S., Carvalho, T.S., Sutie, X. 2020. Soil quality indices following long-term conservation pasture management practices. Agriculture, Ecosystems and Environment. 301. Article 107060. https://doi.org/10.1016/j.agee.2020.107060.Spatially and temporally disparate data in systems agriculture: Issues and prospective solutions
                                                        

- (Peer Reviewed Journal)Kharel, T.P., Ashworth, A.J., Buser, M.D., Owens, P.R. 2020. Spatially and temporally disparate data in systems agriculture: Issues and prospective solutions. Agronomy Journal. 112:4498-4510. https://doi.org/10.1002/agj2.20285.Tractor guidance improves production efficiency by reducing overlaps and gaps
                                                        

- (Peer Reviewed Journal)Kharel, T.P., Ashworth, A.J., Shew, A., Popp, M.P., Owens, P.R. 2020. Tractor guidance improves production efficiency by reducing overlaps and gaps. Agricultural & Environmental Letters. 1(5). Article e20012. https://doi.org/10.1002/ael2.20012.Effect of a new manure amendment on ammonia emissions from poultry litter
                                                        

- (Peer Reviewed Journal)Anderson, K., Moore Jr, P.A., Martin, J.W., Ashworth, A.J. 2020. Effect of a new manure amendment on ammonia emissions from poultry litter. Atmosphere. 11(3). Article 257. https://doi.org/10.3390/atmos11030257.Soil quality indices based on long-term conservation cropping systems management
                                                        

- (Peer Reviewed Journal)Amorim, H.C., Ashworth, A.J., Wienhold, B.J., Savin, M.C., Allen, F.L., Saxton, A.M., Owens, P.R., Curi, N. 2020. Soil quality indices based on long-term conservation cropping systems management. Agrosystems, Geosciences & Environment. 3(1). Article e20036. https://doi.org/10.1002/agg2.20036.Effect of seeding distance from subsurface banded poultry litter on corn yield and leaf greenness
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Pote, D.H., Way, T.R., Watts, D.B. 2020. Effect of seeding distance from subsurface banded poultry litter on corn yield and leaf greenness. Agronomy Journal. 112:1679-1689. https://doi.org/10.1002/agj2.20186.Switchgrass nitrogen fertility response and nutrient cycling in a hay system
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Moore Jr, P.A., King, R., Douglas, J.L., Pote, D.A., Jacobs, A. 2020. Switchgrass nitrogen fertility response and nutrient cycling in a hay system. Agronomy Journal. 112:1963-1971. https://doi.org/10.1002/agj2.20156.Soil quality indexes improve following long-term manure deposition and conservation practices

- (Abstract Only)Technology applications for optimizing farm production

- (Abstract Only)Relationship of Anti-Mullerian hormone to reproductive traits in Katahdin ewes bred in late spring or fall
                                                        

- (Peer Reviewed Journal)Acharya, M., Burke, J.M., Ashworth, A.J., Rorie, R.W. 2020. Relationship of Anti-Mullerian hormone to reproductive traits in Katahdin ewes bred in late spring or fall. Advances in Reproductive Sciences. 8:48-56. https://doi.org/10.4236/arsci.2020.81005.Long-Term effects of grazing management and buffer strips on phosphorus runoff from pastures fertilized with poultry litter
                                                        

- (Peer Reviewed Journal)Kelsey, A.R., Moore Jr, P.A., Pilon, C., Owens, P.R., Ashworth, A.J., Miller, D., Delaune, P. 2020. Long-Term effects of grazing management and buffer strips on phosphorus runoff from pastures fertilized with poultry litter. Journal of Environmental Quality. 49:85-96. https://doi.org/10.1002/jeq2.20010.Digital soil mapping using legacy data in Central America

- (Abstract Only)Review of antibiotic resistance, ecology, and dissemination and mitigation in U.S. broiler poultry systems
                                                        

- (Literature Review)Yang, Y., Ashworth, A.J., Cook, K.L., Willett, C., Upadhyay, A., Owens, P.R., Ricke, S.C., DeBruyn, J.M., Moore Jr, P.A. 2019. Review of antibiotic resistance, ecology, and dissemination and mitigation in U.S. broiler poultry systems. Frontiers in Microbiology. 10:2639. https://doi.org/10.3389/fmicb.2019.02639.Long-term cropping systems management influences soil strength and nutrient cycling
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Owens, P.R., Allen, F. 2020. Long-term cropping systems management influences soil strength and nutrient cycling. Geoderma. 361.  Article 114062. https://doi.org/10.1016/j.geoderma.2019.114062.Comparing yield trial locations based on their elicited expressions of genetic variance among soybean cultivars
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Knapp, V., Allen, F.L., Saxton, A.M. 2020. Comparing yield trial locations based on their elicited expressions of genetic variance among soybean cultivars. Crop Science. 60:1313–1324. https://doi.org/10.1002/csc2.20066.Soil bacterial biodiversity is driven by long-term pasture management, poultry litter, and cattle manure inputs
                                                        

- (Peer Reviewed Journal)Yang, Y., Ashworth, A.J., Debruyn, J.M., Willett, C., Durso, L.M., Cook, K.L., Moore Jr, P.A., Owens, P.R. 2019. Soil bacterial biodiversity is driven by long-term pasture management, poultry litter, and cattle manure inputs. PeerJ. 7:e7839. https://doi.org/10.7717/peerj.7839.Browse potential of bristly locust, smooth sumac, and sericea lespedeza for small ruminants
                                                        

- (Peer Reviewed Journal)Acharya, M., Ashworth, A.J., Burner, D., Burke, J.M., Pote, D.H., Muir, J.P. 2019. Browse potential of bristly locust, smooth sumac, and sericea lespedeza for small ruminants. Agroforestry Systems. https://doi.org/10.1007/s10457-019-00479-0.Soil quality indices based on long-term conservation cropping systems management

- (Abstract Only)Simulating switchgrass biomass productivity using ALMANAC. I. Calibration of soil water
                                                        

- (Peer Reviewed Journal)Rocateli, A.C., Ashworth, A.J., West, C.P., Brye, K.R., Popp, M.P., Kiniry, J.R. 2020. Simulating switchgrass biomass productivity using ALMANAC. I. Calibration of soil water. Agronomy Journal. 112:183-193. https://doi.org/10.1002/agj2.20054.A historical review on antibiotic resistance of foodborne Campylobacter
                                                        

- (Peer Reviewed Journal)Yang, Y., Feye, K.M., Shi, Z., Pavlidis, H.O., Kogut, M.H., Ashworth, A.J., Ricke, S. 2019. A historical review on antibiotic resistance of foodborne Campylobacter. Frontiers in Microbiology. 10:1-8. https://doi.org/10.3389/fmicb.2019.01509.Crop rotation and bio-cover impact on no-tillage corn, soybean, and cotton profitability in Tennessee

- (Abstract Only)Switchgrass forage yield and compositional response to phosphorus and potassium
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Moore Jr, P.A., King, R., Douglas, J.L., Pote, D.H., Jacobs, A., Pratt, E. 2019. Switchgrass forage yield and compositional response to phosphorus and potassium. Agrosystems, Geosciences & Environment. 2:190010. https://doi.org/10.2134/age2019.02.0010.Feasibility and concurrent remediation of red mud as an in situ pyrolysis catalyst

- (Peer Reviewed Journal)Lepore, A., Ashworth, A.J., Pyoungchung, K., Labbe, N., Connatser, R.M., Allen, F.L. 2019. Feasibility and concurrent remediation of red mud as an in situ pyrolysis catalyst. BioResources. 14(2):4696-4707.White (Trifolium repens L.) and arrowleaf (Trifolium vesiculosum Savi) clover emergence in varying loblolly pine (Pinus taeda L.) tree alley spacings
                                                        

- (Peer Reviewed Journal)Adams, T., Philipp, D., Burner, D.M., Jennings, J., McPeake, B., Ashworth, A.J., Pote, D.H., Burke, J.M., Rhein, R. 2019. White (Trifolium repens L.) and arrowleaf (Trifolium vesiculosum Savi) clover emergence in varying loblolly pine (Pinus taeda L.) tree alley spacings. American Journal of Plant Sciences. 10:659-669. https://doi.org/10.4236/ajps.2019.104048.Carbon sequestration and nitrogen uptake in a temperate silvopasture system
                                                        

- (Peer Reviewed Journal)Dold, C., Thomas, A.L., Ashworth, A.J., Philipp, D., Brauer, D.K., Sauer, T.J. 2019. Carbon sequestration and nitrogen uptake in a temperate silvopasture system. Nutrient Cycling in Agroecosystems. 114(1):85-98. https://doi.org/10.1007%2Fs10705-019-09987-y.Are soils beneath coniferous tree stands more acidic than soils beneath deciduous tree stands?
                                                        

- (Peer Reviewed Journal)Burgess-Conforti, J.R., Moore Jr, P.A., Owens, P.R., Miller, D., Ashworth, A.J., Hays, P.D., Evans-White, M., Anderson, K.R. 2019. Are soils beneath coniferous tree stands more acidic than soils beneath deciduous tree stands? Environmental Science and Pollution Research. 26:14930–14931. https://doi.org/10.1007/s11356-019-04883-y.Spatial distribution of soil phosphorus, calcium, and pH following long-term broiler litter application
                                                        

- (Peer Reviewed Journal)Jiang, Y., Sun, Z., Owens, P.R., Adhikari, K., Wang, Q., Dorantes, M., Read, J.J., Ashworth, A.J., Libohova, Z. 2019. Spatial distribution of soil phosphorus, calcium, and pH following long-term broiler litter application. Journal of Environmental Quality. https://doi.org/10.2134/jeq2018.11.0406.Spatial distribution of soil phosphorus, calcium, and pH after long-term broiler litter application
                                                        

- (Peer Reviewed Journal)Jiang, Y., Sun, Z., Owens, P.R., Adhikari, K., Wang, Q., Dorantes, M.J., Read, J.J., Ashworth, A.J., Libohova, Z. 2019. Spatial distribution of soil phosphorus, calcium, and pH after long-term broiler litter application. Journal of Environmental Quality. 48:594-602. https://doi.org/10.2134/jeq2018.11.0406.Nutrient characteristics of poultry manure and litter
                                                        

- (Monograph)Ashworth, A.J., Chastain, J.P., Moore Jr, P.A. 2020. Nutrient characteristics of poultry manure and litter. Soil Science Society of America Journal. 67-87. https://doi.org/10.2134/asaspecpub67.c5.Global meta-analysis of cotton yield and weed suppression from cover crops

- (Peer Reviewed Journal)Toler, H.D., Auge, R.M., Benelli, V., Allen, F.L., Ashworth, A.J. 2019. Global meta-analysis of cotton yield and weed suppression from cover crops. Crop Science. 59:1-13.Spatial soil nutrient-plant-herbivore linkages: A case study from two poultry litter amended pastures in Northwest Arkansas
                                                        

- (Peer Reviewed Journal)Braden, I.S., West, C.P., Ashworth, A.J. 2019. Spatial soil nutrient-plant-herbivore linkages: A case study from two poultry litter amended pastures in Northwest Arkansas. Agrosystems, Geosciences & Environment. 2:180036. https://doi.org/10.2134/age2018.09.0039.Developing best management strategies for reducing soluble phosphorus losses from poultry litter in grazing systems

- (Abstract Only)Long-term study on the effects of buffer strips and grazing management on phosphorus runoff from pastures fertilized with poultry litter

- (Abstract Only)Growth rate of Giant Miscanthus (Miscanthus x giganteus) and Giant Reed (Arundo donax) in a low-input system in Arkansas, USA
                                                        

- (Peer Reviewed Journal)Acharya, M., Burner, D.M., Ashworth, A.J., Felix, F., Adams, T. 2018. Growth rate of Giant Miscanthus (Miscanthus x giganteus) and Giant Reed (Arundo donax) in a low-input system in Arkansas, USA. American Journal of Plant Sciences. 9:2371-2384. https://doi.org/10.4236/ajps.2018.912172.Economic and environmental impact assessment of tractor guidance technology

- (Peer Reviewed Journal)Ashworth, A.J., Lindsay, K.R., Popp, M.P., Owens, P.R. 2018. Economic and environmental impact assessment of tractor guidance technology. Agricultural and Environmental Letters. 3:1-5.  Available: https://dl.sciencesocieties.org/publications/ael/pdfs/3/1/180038.A decision - Support system for analyzing tractor guidance technology
                                                        

- (Peer Reviewed Journal)Lindsay, K.R., Popp, M.P., Ashworth, A.J., Owens, P.R. 2018. A decision - Support system for analyzing tractor guidance technology. Computers and Electronics in Agriculture. 153:115-125. https://doi.org/10.1016/j.compag.2018.08.014.Global meta-analysis reveals agro-grassland productivity varies based on species diversity over time
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Toler, H.D., Allen, F.L., Auge, R.M. 2018. Global meta-analysis reveals agro-grassland productivity varies based on species diversity over time. PLoS One. 13(7):e0200274. https://doi.org/10.1371/journal.pone.0200274.Grazing management and buffer strip impact on nitrogen runoff from pastures fertilized with poultry litter

- (Peer Reviewed Journal)Pilon, C., Moore Jr, P.A., Pote, D.H., Martin, J.W., Owens, P.R., Ashworth, A.J., Miller, D.M., Delaune, P.B. 2018. Grazing management and buffer strip impact on nitrogen runoff from pastures fertilized with poultry litter. Journal of Environmental Quality. Available: https://dl.sciencesocieties.org/publications/jeq/abstracts/0/0/jeq2018.04.0159.Fertilizer recommendations for switchgrass:  Quantifying economic effects on quality and yield
                                                        

- (Peer Reviewed Journal)Popp, M.P., Ashworth, A.J., Moore Jr, P.A., Owens, P.R., Douglas, J.L., Pote, D.H., Jacobs, A., Lindsay, K. 2018. Fertilizer recommendations for switchgrass:  Quantifying economic effects on quality and yield. Agronomy Journal. 110(5):1854-1861. https://doi.org/10.2134/agronj2018.04.0273.Geostatistical mapping of metal elements distribution across conterminous USA

- (Abstract Only)Adhikari, K., Owens, P.R., West, L., Ashworth, A.J., Wilson, M.A., Miller, D.M. 2019. Geostatistical mapping of metal elements distribution across conterminous USA. Meeting Abstract. Global Symposium on Soil Pollution. 595-603.Topographic controls on soil nutrient variations in a Silvopasture system
                                                        

- (Peer Reviewed Journal)Adhikari, K., Owens, P.R., Ashworth, A.J., Sauer, T.J., Libohova, Z., Richter, J., Miller, D.M. 2018. Topographic controls on soil nutrient variations in a Silvopasture system. Agrosystems, Geosciences & Environment. https://doi.org/10.2134/age2018.04.0008.Geostatistical mapping of metal elements distribution across conterminous USA

- (Abstract Only)Crop rotations and poultry litter affect dynamic soil chemical properties and soil biota long-term
                                                        

- (Peer Reviewed Journal)Ashworth, A.J., Allen, F.L., Owens, P.R., Debruyn, J.M., Sams, C. 2018. Crop rotations and poultry litter affect dynamic soil chemical properties and soil biota long-term. Journal of Environmental Quality. 47(6):1327-1338. https://doi.org/10.2134/jeq2017.12.0465.Carbon budget calculation for agroforestry systems

- (Other)Dold, C., Thomas, A.L., Ashworth, A.J., Philipp, D., Adams, T.C., Sauer, T.J. 2018. Carbon budget calculation for agroforestry systems. Temperate Agroforester. 24(1). Available: https://www.aftaweb.org/136-2018-vol-24/2018-vol-24-no-1/229-carbon-budget-calculation-for-silvopastoral-systems.htmlDecision support for economic and environmental impact of tractor guidance on small crop and livestock farms

- (Abstract Only)A pattern recognition approach combined with Fuzzy Logic for predicting soil properties and function. International Commission of Agricultural and Biosystems

- (Abstract Only)Effects of land-applied ammonia scrubber solutions on yield, nitrogen uptake, soil test phosphorus and phosphorus runoff

- (Peer Reviewed Journal)Martin, J.W., Moore Jr, P.A., Hong, L., Ashworth, A.J., Miles, D.M. 2018. Effects of land-applied ammonia scrubber solutions on yield, nitrogen uptake, soil test phosphorus and phosphorus runoff. Journal of Environmental Quality. 47(2):263-269.Long-term above-ground biomass production in a red oak-pecan agroforestry system

- (Abstract Only)Dold, C., Thomas, A., Sauer, T.J., Ashworth, A.J., Philipp, D. 2017. Long-term above-ground biomass production in a red oak-pecan agroforestry system. In: Proceedings of 15th Annual North American Agroforestry Conference June 27-29, 2017, Blacksburg, VA.Using Google SketchUp to simulate tree row azimuth effects on alley shading

- (Peer Reviewed Journal)Burner, D.M., Ashworth, A.J., Laughlin, K.F., Boyer, M.E. 2017. Using Google SketchUp to simulate tree row azimuth effects on alley shading. Agronomy Journal. 110:1-6.Predicted harvest time effects on switchgrass moisture content, nutrient concentration, yield, and profitability

- (Peer Reviewed Journal)Lindsay, K.R., Popp, M.P., West, C.P., Ashworth, A.J., Rocateli, A.C., Farris, R., Kakani, G., Fritschi, F.B., Green, S.V., Alison, M.W., Mawg, M.J., Acosta-Gamboai, L. 2017. Predicted harvest time effects on switchgrass moisture content, nutrient concentration, yield, and profitability. Biomass and Bioenergy. 108:74-89. https://doi.org/10.1016/j.biombioe.2017.09.017.Ratoon Cold Tolerance of Pennisetum, Erianthus and Saccharum Bioenergy Feedstocks

- (Peer Reviewed Journal)Burner, D.M., Hale, A.L., Viator, R.P., Belesky, D.P., Houx III, J.H., Ashworth, A.J., Fritschi, F.B. 2017. Ratoon Cold Tolerance of Pennisetum, Erianthus and Saccharum Bioenergy Feedstocks. Industrial Crops and Products. 109C(2017)327-334.http://dx.doi.org/10.1016/j.indcrop.2017.08.020.Microbial community structure is affected by cropping sequences and poultry litter under long-term no-tillage

- (Peer Reviewed Journal)Ashworth, A.J., DeBruyn, J.M., Allen, F.L., Radosevick, M., Owens, P.R. 2017. Microbial community structure is affected by cropping sequences and poultry litter under long-term no-tillage. Soil Biology and Biochemistry. 114:210-219.N2 fixation of common and hairy vetches when intercropped into switchgrass

- (Peer Reviewed Journal)Ashworth, A.J., Allen, F.L., Warwick, K.S., Keyser, P.D., Bates, G.E., Tyler, D.D., Lambdin, P.L., Pote, D.H. 2017. N2 fixation of common and hairy vetches when intercropped into switchgrass. Agronomy Journal. 7(2):39. doi:10.3390/agronomy7020039.Diverse rotations and poultry litter improves soybean yield

- (Popular Publication)Ashworth, A.J., Allen, F.L., Saxton, A.M., Tyler, D.D. 2017. Diverse rotations and poultry litter improves soybean yield. CSA News. 62:14-14.doi:10.2134/csa2017.62.0606.Switchgrass growth and effects on biomass accumulation, moisture content, and nutrient removal

- (Peer Reviewed Journal)Ashworth, A.J., Rocateli, A.C., West, C.P., Brye, K., Popp, M.P. 2017. Switchgrass growth and effects on biomass accumulation, moisture content, and nutrient removal. Agronomy Journal. 109:1-9.Dual-Use Bioenergy-Livestock Feed Potential of Giant Miscanthus, Giant Reed, and Miscane

- (Peer Reviewed Journal)Burner, D.M., Ashworth, A.J., Pote, D.H., Kiniry, J.R., Belesky, D.P., Houx, J.H., Carver, P., Fritschi, F.B. 2017. Dual-use bioenergy-livestock feed potential of giant miscanthus, giant reed, and miscane. Agricultural Sciences. 8:97-112.Impact of crop rotation and soil amendments on long-term no-tilled soybean yields

- (Peer Reviewed Journal)Ashworth, A.J., Allen, F., Saxton, A.N., Tyler, D. 2017. Impact of crop rotation and soil amendments on long-term no-tilled soybean yields. Agronomy Journal. 109(3):1-9.
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