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                    U.S. DEPARTMENT OF AGRICULTURE
 New England Plant, Soil and Water Research Laboratory: Orono, ME
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ARS Home Northeast Area Orono, Maine New England Plant, Soil and Water Research Laboratory People & Locations







Robert P Larkin

(Bob)
                        New England Plant, Soil and Water Research Laboratory

                        




                        
                        Research Plant Pathologist
                        Phone: (207) 581-3367
                        
                        
                        Fax: (207) 866-0464(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)
                            ProjectsAddressing Challenges in Northeastern Cropping Systems to Enhance Sustainability, Resilience, and Profitability
                                                    In-House Appropriated
                                                                    (D)Accession Number: 445485Enhancing Soil Health in Potato Production by Applying Soil Amendments and Manipulating Post-Fumigation microbiomes
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 444627Enhancing Soil Health in Potato Production by Applying Soil Amendments and Manipulating Post-Fumigation Microbiomes
                                                    Non-Assistance Cooperative Agreement
                                                                    (S)Accession Number: 445157**Publications**
                                                (Clicking on the reprint icon
                                                    Reprint Icon
                                                    will take you to the publication reprint.)First report of pectobacterium brasiliense causing bacterial blackleg and soft rot on potato in Pennsylvania
                                                        

- (Peer Reviewed Journal)Zhang, X., Ge, T., Fan, X., Ma, X., Swingle, B.M., Leiby, R., Johnson, S., Larkin, R.P., Chim, B., Hao, J. 2023. First report of pectobacterium brasiliense causing bacterial blackleg and soft rot on potato in Pennsylvania. Plant Disease. 36774584. https://doi.org/10.1094/PDIS-09-22-2085-PDN.Effects of different cover crops and soil amendments on soil and crop properties in organic vegetable production
                                                        

- (Peer Reviewed Journal)Larkin, R.P. 2023. Effects of different cover crops and soil amendments on soil and crop properties in organic vegetable production. Agronomy Journal. https://doi.org/10.1080/09064710.2023.2165963.Long-term effects of compost amendments and brassica green manures in potato cropping systems on soil and crop health and productivity
                                                        

- (Peer Reviewed Journal)Larkin, R.P. 2022. Long-term effects of compost amendments and brassica green manures in potato cropping systems on soil and crop health and productivity. Agronomy Journal. https://doi.org/10.3390/agronomy12112804.Risk evaluation of Benzovindiflupyr resistance of Verticillium dahliae population in Maine
                                                        

- (Peer Reviewed Journal)Li, K., Wang, Y., Ge, T., Larkin, R.P., Smart, A., Johnson, S.B., Hao, J. 2023. Risk evaluation of Benzovindiflupyr resistance of Verticillium dahliae population in Maine. Plant Disease. https://doi.org/10.1094/PDIS-06-22-1384-RE.Species of Dickeya and Pectobacterium isolated in 2015-2016 from potatoes with soft rot disease in Northeastern and North Central
United States
                                                        

- (Peer Reviewed Journal)Curland, R.D., Maniello, A., Perry, K.L., Hao, J., Charkowski, A.O., Bull, C.T., Mcnally, R.R., Johnson, S.B., Rosenzweig, N., Secor, G.A., Larkin, R.P., Gugino, B.K., Ishimaru, C.A. 2021. Species of Dickeya and Pectobacterium isolated in 2015-2016 from potatoes with soft rot disease in Northeastern and North Central United States. Microorganisms. https://doi.org/10.3390/microorganisms9081733.Use of crop rotations, cover crops and green manures for disease suppression in potato cropping systems
                                                        

- (Review Article)Larkin, R.P. 2021. Use of crop rotations, cover crops and green manures for disease suppression in potato cropping systems. Review Article. https://doi.org/10.15377/2409-9813.2021.08.12.Species of Dickeya and Pectobacterium isolated in 2015-2016 from potatoes with soft rot disease in Northeastern and North Central United States
                                                        

- (Peer Reviewed Journal)Curland, R.D., Mainello, A., Perry, K.L., Hao, J., Charkowski, A.O., Bull, C.T., Mcnally, R.R., Johnson, S.B., Rosenzweig, N., Secor, G.A., Larkin, R.P., Gugino, B.K., Ishimaru, C.A. 2021. Species of Dickeya and Pectobacterium isolated in 2015-2016 from potatoes with soft rot disease in Northeastern and North Central United States. Microorganisms. https://doi.org/10.3390/microorganisms9081733.Potato cropping system management strategy impacts soil physical, chemical, and biological properties over time
                                                        

- (Peer Reviewed Journal)Larkin, R.P., Griffin, T.S., Honeycutt, C.W., Olanya, O.M., He, Z. 2021. Potato cropping system management strategy impacts soil physical, chemical, and biological properties over time. Soil and Tillage Research. https://doi.org/10.1016/j.still.2021.105148.Pangenomic Analysis of Dickeya Dianthicola Strains Reveals the Outbreak of Blackleg and Soft Rot of Potatoes in USA
                                                        

- (Peer Reviewed Journal)Ge, T., Jiang, H., Tan, E.H., Johnson, S.B., Larkin, R.P., Charkowski, A.O., Secor, G., Hao, J. 2021. Pangenomic analysis of Dickeya dianthicola strains reveals the outbreak of blackleg and soft rot of potatoes in USA. Plant Disease. https://doi.org/10.1094/PDIS-03-21-0587-RE.Interaction Between Dickeya dianthicola and Pectobacterium parmentieri in Potato Infection Under Field Conditions
                                                        

- (Peer Reviewed Journal)Ge, T., Johnson, S.B., Larkin, R.P., Hao, J. 2021. Interaction between Dickeya dianthicola and Pectobacterium parmentieri in potato infection under field conditions. Microorganisms. 9: 316. https://doi.org/10.3390/microorganisms9020316.Potato Growth and Yield Characteristics under Different
Cropping System Management Strategies in Northeastern U.S.
                                                        

- (Peer Reviewed Journal)Larkin, R.P., Honeycutt, C.W., Griffin, T.S., Olanya, O.M., He, Z., Halloran, J.M. 2021. Potato growth and yield characteristics under different cropping system management strategies in northeastern U.S. Agronomy Journal. https://doi.org/10.3390/agronomy11010165.Genotyping Dickeya dianthicola causing potato blackleg and soft rot associated with inoculum geography in Northeastern America
                                                        

- (Peer Reviewed Journal)Ge, T., Jiang, H., Johnson, S.B., Larkin, R.P., Charkowski, A.O., Secor, G., Hao, J. 2020. Genotyping Dickeya dianthicola causing potato blackleg and soft rot associated with inoculum geography in Northeastern America. Plant Disease. https://doi.org/10.1094/pdis-10-20-2138-re.Effects of selected soil amendments and mulch type on soil properties and productivity in organic vegetable production
                                                        

- (Peer Reviewed Journal)Larkin, R.P. 2020. Effects of selected soil amendments and mulch type on soil properties and productivity in organic vegetable production. Agronomy. 10:795. https://doi.org/10.3990/agronomy10060795.Effects of crop rotation and biocontrol amendments on Rhizoctonia disease of potato and soil microbial communities
                                                        

- (Peer Reviewed Journal)Larkin, R.P., Brewer, M.T. 2020. Effects of crop rotation and biocontrol amendments on Rhizoctonia disease of potato and soil microbial communities. Agriculture. 10:128. https://doi.org/10.3390/agriculture10040128.Biological control of soilborne diseases in organic potato production using hypovirulent strains of Rhizoctonia solani
                                                        

- (Peer Reviewed Journal)Larkin, R.P. 2020. Biological control of soilborne diseases in organic potato production using hypovirulent strains of Rhizoctonia solani. Biological Agriculture and Horticulture. 36(2):119-129. https://doi.org/10.1080/01448765.2019.1706636.Effects of cover crops, rotation, and biological control products on soil properties and productivity in organic vegetable production in the Northeastern U.S.
                                                        

- (Peer Reviewed Journal)Larkin, R.P. 2019. Effects of cover crops, rotation, and biological control products on soil properties and productivity in organic vegetable production in the Northeastern U.S. Organic Agriculture. 10:171-186. https://doi.org/10.1007/S13165-019-00257-3.Use and effects of different Brassica and other rotation crops on soilborne diseases and tuber yield of potato

- (Peer Reviewed Journal)Larkin, R.P., Lynch, R.P. 2018. Use and effects of different Brassica and other rotation crops on soilborne diseases and tuber yield of potato. Acta Horticulturae. 4:37.Soil microbiome characteristics and soilborne disease development associated with long-term potato cropping system practices

- (Abstract Only)Larkin, R.P. 2018. Soil microbiome characteristics and soilborne disease development associated with long-term potato cropping system practices. Abstracts of the 2018 Annual Meeting of the Potato Association of America, Boise ID. 31-32.Effects of foliar and tuber sprout suppressants on shelf life of ware potatoes under tropical ambient conditions

- (Peer Reviewed Journal)Nyankanga, R.O., Murigi, W.W., Shibairo, S.I., Olanya, O.M., Larkin, R.P. 2018. Effects of foliar and tuber sprout suppressants on shelf life of ware potatoes under tropical ambient conditions. American Journal of Potato Research. Vol.95:539-549.Long-term effects of potato cropping system strategies on soilborne diseases and soil microbial communities

- (Abstract Only)Larkin, R.P. 2018. Long-term effects of potato cropping system strategies on soilborne diseases and soil microbial communities. Phytopathology. 108:S1.163.Isolation and identification of bacteria causing blackleg and soft rot of potato

- (Abstract Only)Ge, T., Marangoni, N., Hao, J., Larkin, R.P., Johnson, S.B. 2018. Isolation and identification of bacteria causing blackleg and soft rot of potato. Phytopathology. 108: S1.62.Potential role of small noncoding RNAs in regulating hypovirulence in Rhizoctonia solani anastomosis group 3

- (Abstract Only)Champaco, E.R., Champaco, E., Kitazumi, A., Larkin, R.P., Tavantzis, S., De Los Reyes, B.G. 2018. Potential role of small noncoding RNAs in regulating hypovirulence in Rhizoctonia solani anastomosis group 3. Phytopathology. 108:S1.108.Phylogeny of pectolytic bacteria associated with recent outbreaks of potato soft rot and blackleg in the United States

- (Abstract Only)Incorporating disease-suppressive rotation crops and organic amendments into improved potato cropping systems
                                                        

- (Abstract Only)Larkin, R.P. 2017. Incorporating disease-suppressive rotation crops and organic amendments into improved potato cropping systems. American Phytopathological Society Abstracts. 107:S5.48. https://doi.org/10.1094/PHYTO-107-12-S5.1.Incorporating soil health management practices into viable potato cropping systems

- (Abstract Only)Larkin, R.P. 2017. Incorporating soil health management practices into viable potato cropping systems. Northeast Potato Technology Forum Conspectus. 2017:46-47.Research Highlight: Water-extractable organic matter from sandy loam soils

- (Popular Publication)He, Z., Olanya, O.M., Larkin, R.P., Honeycutt, W., Zhao, A. 2016. Research Highlight: Water-extractable organic matter from sandy loam soils. CSA News. 61(12):16.Biological control of soilborne diseases in organic potato production as affected by varying environmental conditions

- (Abstract Only)Larkin, R.P. 2016. Biological control of soilborne diseases in organic potato production as affected by varying environmental conditions. Phytopathology 107:S2.9.Impacts of biocontrol products on Rhizoctonia disease of potato and soil microbial communities, and their persistence in soil

- (Peer Reviewed Journal)Larkin, R.P., Halloran, J.M. 2016. Impacts of biocontrol products on Rhizoctonia disease of potato and soil microbial communities, and their persistence in soil. Crop Protection. 90:96-105.Quantity and nature of water-extractable organic matter from sandy loam soils with potato cropping managements

- (Peer Reviewed Journal)He, Z., Zhang, M., Zhao, A., Olanya, O.M., Larkin, R.P., Honeycutt, C.W. 2016. Quantity and nature of water-extractable organic matter from sandy loam soils with potato cropping managements. Agricultural and Environmental Letters. 1:160023-160029.Cumulative and residual effects of different potato cropping system management strategies on soilborne diseases and soil microbial communities over time
                                                        

- (Peer Reviewed Journal)Larkin, R.P., Halloran, J.M., Honeycutt, C.W., Griffin, T.S., Olanya, O.M., He, Z. 2016. Cumulative and residual effects of different potato cropping system management strategies on soilborne diseases and soil microbial communities over time. Plant Pathology. 66:437-449. doi: 10.1111/ppa.12584.Biological control of soilborne diseases in organic potato production using hypovirulent strains of Rhizoctonia solani

- (Abstract Only)Larkin, R.P. 2016. Biological control of soilborne diseases in organic potato production using hypovirulent strains of Rhizoctonia solani. American Phytopathological Society Annual Meeting. 106:S4.57.Cumulative and residual effects of potato cropping system management strategies on crop and soil health parameters

- (Abstract Only)Larkin, R.P. 2016. Cumulative and residual effects of potato cropping system management strategies on crop and soil health parameters. 2016 Northeast Potato Technology Forum Abstracts, p. 13-16.Survival potential of Phytophthora infestans in relation to environmental factors and late blight occurrence

- (Peer Reviewed Journal)Olanya, O.M., Anwar, M., He, Z., Larkin, R.P., Honeycutt, C.W. 2016. Survival potential of Phytophthora infestans in relation to environmental factors and late blight occurrence. Journal of Plant Protection Research. 56:73-81.Impacts of different potato cropping systems on crop and soil health parameters

- (Abstract Only)Larkin, R.P. 2015. Impacts of different potato cropping systems on crop and soil health parameters. Potato Association of America Proceedings. p. 64.Cumulative and residual effects of potato cropping system management strategies on soil physical, chemical, and biological properties

- (Abstract Only)Larkin, R.P. 2016. Cumulative and residual effects of potato cropping system management strategies on soil physical, chemical, and biological properties. American Phytopathological Society Abstracts. 105:S4.78.Soil Health Paradigms and Implications for Disease Management

- (Review Article)Larkin, R.P. 2015. Soil Health Paradigms and Implications for Disease Management. Annual Review of Phytopathology. 53:199-221 DOI: 10.1146/annurev-phyto-080614-120357.Incidence of Phytophthora infestans (Mont.) de Bary on potato and tomato in Maine, 2006-2010

- (Peer Reviewed Journal)Olanya, O.M., Larkin, R.P., Honeycutt, C.W. 2015. Incidence of Phytophthora infestans (Mont.) de Bary on potato and tomato in Maine, 2006-2010. Journal of Plant Protection Research. 55:58-68.Cumulative and residual effects of potato cropping system management strategies on soilborne diseases and soil microbial communities over time

- (Abstract Only)Larkin, R.P., Halloran, J.M. 2014. Cumulative and residual effects of potato cropping system management strategies on soilborne diseases and soil microbial communities over time. Phytopathology104 (Suppl 3):S3.66.Relationships of crop and soil management systems to meteorological variables and potato diseases on a Russet burbank cultivar

- (Peer Reviewed Journal)Olanya, O.M., Larkin, R.P., Halloran, J.M., He, Z. 2014. Relationships of crop and soil management systems to meteorological variables and potato diseases on a Russet burbank cultivar. Journal of Agricultural Meteorology of Japan. 70(2):91-104.Management effects of disease-suppressive rotation crops on potato yield and soilborne disease and their economic implications in potato production

- (Peer Reviewed Journal)Larkin, R.P., Halloran, J.M. 2014. Management effects of disease-suppressive rotation crops on potato yield and soilborne disease and their economic implications in potato production. American Journal of Potato Research. http://dx.doi.org/10.1007/s12230-014-9366-z.Rapeseed rotation, compost and biocontrol amendments reduce soilborne diseases and increase tuber yield in conventional and organic potato production systems

- (Peer Reviewed Journal)Bernard, E., Larkin, R.P., Tavantzis, S., Erich, M.S., Alyokhin, A., Gross, S. 2013. Rapeseed rotation, compost and biocontrol amendments reduce soilborne diseases and increase tuber yield in conventional and organic potato production systems. Plant and Soil. 374:611-627.Green manures and plant disease management

- (Review Article)Larkin, R.P. 2013. Green manures and plant disease management. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources. CAB Reviews 2013: 8-037. pp 1-10.Use of biocontrol organisms and compost amendments for improved control of soilborne diseases and increased potato production

- (Peer Reviewed Journal)Larkin, R.P., Tavantzis, S. 2013. Use of biocontrol organisms and compost amendments for improved control of soilborne diseases and increased potato production. American Journal of Potato Research. 90:261-270.Economic potential of compost amendment as an alternative to irrigation in Maine potato production systems

- (Peer Reviewed Journal)Halloran, J.M., Larkin, R.P., Defauw, S.L., Olanya, O.M., He, Z. 2013. Economic potential of compost amendment as an alternative to irrigation in Maine potato production systems. American Journal of Plant Sciences. 4:238-245.Geospatial evaluations of potato production systems in Maine

- (Peer Reviewed Journal)Defauw, S.L., Larkin, R.P., English, P., Halloran, J.M., Hoshide, A. 2012. Geospatial evaluations of potato production systems in Maine. American Journal of Potato Research. 89:471-488.Differences in modified Morgan phosphorus levels determined by colorimetric and inductively coupled plasma methods

- (Peer Reviewed Journal)He, Z., Zhang, H., Olanya, O.M., Frantz, J.M., Larkin, R.P. 2012. Differences in modified Morgan phosphorus levels determined by colorimetric and inductively coupled plasma methods. Open Journal of Soil Science. 2(3):256-262.Longer-term potato cropping system effects on soilborne diseases and tuber yield

- (Abstract Only)Larkin, R.P., Halloran, J.M. 2012. Longer-term potato cropping system effects on soilborne diseases and tuber yield [abstract]. Phytopathology. 102:54-67.Selection of candidate genes involved in the defense mechanisms of Phytophthora infestans against fungicides by EST analysis

- (Abstract Only)Champaco, E., Larkin, R.P., De Los Reyes, B. 2012. Selection of candidate genes involved in the defense mechanisms of Phytophthora infestans against fungicides by EST analysis [abstract]. Phytopathology. 102:54.20.Improving potato cropping systems:  longer-term effects on diseases and yield

- (Abstract Only)Larkin, R.P., Halloran, J.M. 2012. Improving potato cropping systems:  longer-term effects on diseases and yield. Northeast Potato Technology Forum Abstracts. 21-22.Mapping and monitoring potato cropping systems in Maine:  geospatial methods and land use assessments

- (Abstract Only)Defauw, S.L., Larkin, R.P., English, P., Hoshide, A.K., Halloran, J.M. 2012. Mapping and monitoring potato cropping systems in Maine:  geospatial methods and land use assessments. Northeast Potato Technology Forum Abstracts. pp. 24-25.Economic implications of alternative potato cropping systems in Maine

- (Abstract Only)Halloran, J.M., Larkin, R.P., Defauw, S.L. 2012. Economic implications of alternative potato cropping systems in Maine. Northeast Potato Technology Forum Abstracts. p. 23.Understanding the molecular basis of the resistance of Phytophthora infestans to fungicides by functional genomics

- (Abstract Only)Champaco, E., Larkin, R.P., De Los Reyes, B.G. 2012. Understanding the molecular basis of the resistance of Phytophthora infestans to fungicides by functional genomics. Northeast Potato Technology Forum Abstracts. p. 34.Sustainable potato production:  global case studies

- (Book / Chapter)He, Z., Larkin, R.P., Honeycutt, C.W. 2012. Sustainable Potato Production:  Global Case Studies. Springer, Dordrecht, 539 p.Sustainable potato production and global food security

- (Book / Chapter)Defauw, S.L., He, Z., Larkin, R.P., Mansour, S. 2012. Sustainable potato production and global food security.  In: He, Z., Larkin, R.P., Honeycutt, C.W., editors. Sustainable potato production: global case studies. Amsterdam, The Netherlands: Springer. p. 3-19.Impacts of crop rotation and irrigation on soilborne diseases and soil microbial communities

- (Book / Chapter)Larkin, R.P., Honeycutt, C.W., Olanya, O.M., Halloran, J.M., He, Z. 2012. Impacts of crop rotation and irrigation on soilborne diseases and soil microbial communities. In: He, Z., Larkin, R.P., Honeycutt, C.W., editors. Sustainable potato production: global case studies. Amsterdam, The Netherlands: Springer. p. 23-41.Compost, rapeseed rotation, and biocontrol agents significantly impact soil microbial communities in organic and conventional potato production systems

- (Peer Reviewed Journal)Bernard, E., Larkin, R.P., Tavantzis, S., Erich, M., Alyokhin, A., Lannan, A., Gross, S. 2011. Compost, rapeseed rotation, and biocontrol agents significantly impact soil microbial communities in organic and conventional potato production systems. Applied Soil Ecology. 52:29-41.Links among nitrification, nitrifier communities and edaphic properties in contrasting soils receiving dairy slurry

- (Peer Reviewed Journal)Fortuna, A., Honeycutt, C.W., Marsh, T.L., Griffin, T.S., Larkin, R.P., He, Z., Sistani, K.R., Albrecht, S.L., Woodbury, B.L., Torbert Iii, H.A., Powell, J.M., Hubbard, R.K., Eigenberg, R.A., Wright, R.J. 2011. Links among nitrification, nitrifier communities and edaphic properties in contrasting soils receiving dairy slurry. Journal of Environmental Quality. 41:262-272.Links among nitrification, nitrifier communities and edaphic properties in contrasting soils receiving dairy slurry

- (Peer Reviewed Journal)Fortuna, A., Honeycutt, C.W., Vandemark, G.J., Griffin, T.S., Larkin, R.P., He, Z., Wienhold, B.J., Sistani, K.R., Albrecht, S.L., Woodbury, B.L., Torbert III, H.A., Powell, J.M., Hubbard, R.K., Eigenberg, R.A., Wright, R.J., Allredge, R.J. 2012. Links among nitrification, nitrifier communities and edaphic properties in contrasting soils receiving dairy slurry. Journal of Environmental Quality. 41:262-272.Early and late blight potential on Russet Burbank potato as affected by microclimate, cropping systems and irrigation management in North-eastern United States

- (Book / Chapter)Olanya, O.M., Honeycutt, C., He, Z., Larkin, R.P., Halloran, J.M., Frantz, J. 2012. Early and late blight potential on Russet Burbank potato as affected by microclimate, cropping systems and irrigation management in North-eastern United States. In: He, Z., Larkin, R.P., Honeycutt, C.W., editors. Sustainable Potato Production: Global Case Studies. Amsterdam, The Netherlands: Springer. 43-60.Comparison of soil phosphorus status and organic matter composition in potato fields with different crop rotation systems

- (Book / Chapter)He, Z., Honeycutt, C., Olanya, O.M., Larkin, R.P., Halloran, J.M., Frantz, J. 2012. Comparison of soil phosphorus status and organic matter composition in potato fields with different crop rotation systems. In: He, Z., Larkin, R.P., Honeycutt, C.W., editors. Sustainable Potato Production: Global Case Studies. Amsterdam, The Netherlands: Springer. 61-79.Effects of microclimate, cropping systems, and irrigation management on early and late blight potential on Russet Burbank potato

- (Proceedings)Olanya, O.M., Honeycutt, C., He, Z., Larkin, R.P., Halloran, J.M., Frantz, J. 2011. Effects of microclimate, cropping systems, and irrigation management on early and late blight potential on Russet Burbank potato. American Society of Agronomy Meetings. October 16-19, 2011, San Antonio, TX.  Paper 67514.Potato production systems in Maine: geospatial assessments of agri-environmental indicators

- (Abstract Only)Defauw, S.L., English, P.J., Larkin, R.P., Halloran, J.M., Hoshide, A.K. 2011. Potato production systems in Maine: geospatial assessments of agri-environmental indicators [abstract]. American Society of Agronomy Meetings. Paper No. 64689. Available: http://a-c-s.confex.com/crops/2011am/webprogram/Paper64689.html.Comparing modeled productivity to historical data in New England potato production systems

- (Book / Chapter)Frantz, J., Larkin, R.P., Trusty, G.M., Honeycutt, C., He, Z., Olanya, O.M., Halloran, J.M. 2012. Comparing modeled productivity to historical data in New England potato production systems. In: He, Z., Larkin, R.P., Honeycutt, C.W., editors. Sustainable Potato Production: Global Case Studies. Amsterdam, The Netherlands: Springer. p. 81-85.Use of disease-suppressive Brassica rotation crops in potato production: overview of 10 years of field trials

- (Abstract Only)Larkin, R.P., Olanya, O.M., Halloran, J.M., He, Z., Honeycutt, C. 2011. Use of disease-suppressive Brassica rotation crops in potato production: overview of 10 years of field trials. American Phytopathological Society. 101:S98.Survival potential of Phytophthora infestans sporangia in relation to meteorological factors

- (Abstract Only)Olanya, O.M., Larkin, R.P., He, Z., Jain, S., Honeycutt, C. 2011. Survival potential of Phytophthora infestans sporangia in relation to meteorological factors. American Phytopathological Society Abstracts. 101:6, S132.Soil phosphorus changes impacted by potato cropping management

- (Abstract Only)He, Z., Larkin, R.P., Olanya, O.M., Halloran, J.M. 2011. Soil phosphorus changes impacted by potato cropping management. Northeast Potato Technology Forum. March 16-17, 2011; P26.Geospatial assessments of potato production systems in Maine

- (Abstract Only)Defauw, S.L., Larkin, R.P. 2011. Geospatial assessments of potato production systems in Maine [abstract]. Northeast Potato Technology Forum. p. 27-29.Use of Brassica and other disease-suppressive rotation crops in potato production systems

- (Abstract Only)Larkin, R.P., Olanya, O.M., Halloran, J.M., He, Z. 2011. Use of Brassica and other disease-suppressive rotation crops in potato production systems [abstract]. Northeast Potato Technology Forum. p. 30.Management of Verticillium wilt of potato with disease-suppressive green manures and as affected by previous cropping history

- (Peer Reviewed Journal)Larkin, R.P., Honeycutt, C.W., Olanya, O.M. 2011. Management of Verticillium wilt of potato with disease-suppressive green manures and as affected by previous cropping history. Plant Disease. 95:568-576.Soil test phosphorus and microbial biomass phosphorus in potato fields

- (Peer Reviewed Journal)He, Z., Honeycutt, C.W., Olanya, O.M., Larkin, R.P., Halloran, J.M. 2011. Soil test phosphorus and microbial biomass phosphorus in potato fields. International Journal of Food, Agriculture, and the Environment. 9(1):540-545.Determinants and processes of manure nitrogen availability

- (Book / Chapter)Honeycutt, C.W., Hunt, J.F., Griffin, T.S., He, Z., Larkin, R.P. 2011. Determinants and processes of manure nitrogen availability. In: He, Z., editor. Environmental Chemistry of Animal Manure. New York, NY: Science Publishers. p.201-224.Effects of different potato cropping system approaches and water management on soilborne diseases and soil microbial communities

- (Peer Reviewed Journal)Larkin, R.P., Honeycutt, C.W., Griffin, T.S., Olanya, O.M., Halloran, J.M., He, Z. 2010. Effects of different potato cropping system approaches and water management on soilborne diseases and soil microbial communities. Phytopathology. 101:58-67.Rotation and cover crop effects on soilborne potato diseases and soil microbial communities

- (Peer Reviewed Journal)Larkin, R.P., Griffin, T.S., Honeycutt, C.W. 2010. Rotation and cover crop effects on soilborne potato diseases and soil microbial communities. Plant Disease. 94:1491-1502.Soil test and microbial biomass phosphorus levels impacted by potato cropping system and water management

- (Abstract Only)He, Z., Honeycutt, C.W., Olanya, O.M., Larkin, R.P., Halloran, J.M. 2010. Soil test and microbial biomass phosphorus levels impacted by potato cropping system and water management. International Symposium on Phosphorus Dynamics in the Soil Plant Continuum. September 19-23, 2010. CD-ROM.Assessment of SIMBLIGHT1, SIMPHYT1, and NOBLIGHT models for predicting Phytophthora infestans in the northeastern U.S.

- (Abstract Only)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., He, Z. 2010. Assessment of SIMBLIGHT1, SIMPHYT1, and NOBLIGHT models for predicting Phytophthora infestans in the northeastern U.S.. American Phytopathological Society. 100:592.Management of Verticillium wilt with disease-suppressive crop rotations

- (Abstract Only)Larkin, R.P., Honeycutt, C.W., Olanya, O.M. 2010. Management of Verticillium wilt with disease-suppressive crop rotations. American Phytopathology Society. 100:S67.Effects of supplemental irrigation and soil management: effects on potato tuber diseases

- (Peer Reviewed Journal)Olanya, O.M., Porter, G.A., Lambert, D.H., Starr, G.C., Larkin, R.P., Bradbury, B. 2010. Effects of supplemental irrigation and soil management on potato tuber diseases. Plant Pathology. 9:68-72.Occurrence of Phytophthora infestans on potato and tomato hosts

- (Abstract Only)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., He, Z. 2010. Occurrence of Phytophthora infestans on potato and tomato hosts [abstract]. Northeast Potato Technology Forum. p. 40.Update on the use of disease-suppressive crops in potato rotations

- (Abstract Only)Larkin, R.P., Honeycutt, C.W., Olanya, O.M., He, Z. 2010. Update on the use of disease-suppressive crops in potato rotations. Northeast Potato Technology Forum. pages 10-11.Effects of Potato Cropping Systems and Irrigation  on Soil Organic Matter Composition

- (Abstract Only)He, Z., Honeycutt, C.W., Zhang, H., Larkin, R.P., Olanya, O.M. 2010. Effects of Potato Cropping Systems and Irrigation  on Soil Organic Matter Composition. Northeast Potato Technology Forum. P13.Increases of soil phosphatase and urease activities in potato fields by cropping rotation practices

- (Peer Reviewed Journal)He, Z., Honeycutt, C.W., Griffin, T.S., Larkin, R.P., Olanya, O.M., Halloran, J.M. 2010. Increases of soil phosphatase and urease activities in potato fields by cropping rotation practices. Journal of Food Agriculture and Environment. 8:1112-1117.Soil phosphatase and urease activities impacted by cropping systems and water management

- (Abstract Only)He, Z., Honeycutt, C.W., Griffin, T.S., Olanya, O.M., Larkin, R.P., Halloran, J.M. 2009. Soil phosphatase and urease activities impacted by cropping systems and water management. American Society of Agronomy Meetings. on-line publication.Comparison of three soil P tests and their relationship with potato yield

- (Abstract Only)He, Z., Honeycutt, C.W., Griffin, T.S., Olanya, O.M., Larkin, R.P., Halloran, J.M. 2009. Comparison of three soil P tests and their relationship with potato yield. Soil Science Society of America Annual Meeting. Published on CD-Rom.Cropping system effects on soilborne potato diseases and soil microbial communities

- (Abstract Only)Larkin, R.P., Honeycutt, C.W., Griffin, T.S., Halloran, J.M., Olanya, O.M., He, Z. 2009. Cropping system effects on soilborne potato diseases and soil microbial communities. Phytopathology. 99:S69.The effect of cropping systems and irrigation management on development of potato early blight

- (Peer Reviewed Journal)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., Griffin, T.S., He, Z., Halloran, J.M. 2009. The effect of cropping systems and irrigation management on development of potato early blight. Journal of Plant Pathology. 75:367-375.Fungicide effects on different spore types of Phytophthora infestans

- (Abstract Only)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., He, Z., Halloran, J.M. 2009. Fungicide effects on different spore types of Phytophthora infestans. (abstract) American Phytopathological Society annual meeting. p.741.The role of disease-suppressive rotation crops in managing soilborne potato diseases

- (Abstract Only)Larkin, R.P., Honeycutt, C.W., Olanya, O.M., Griffin, T.S. 2009. The role of disease-suppressive rotation crops in managing soilborne potato diseases. American Journal of Potato Research. 87:130.Development of early and late blight under different cropping systems and irrigation management

- (Abstract Only)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., Griffin, T.S., He, Z., Halloran, J.M. 2009. Development of early and late blight under different cropping systems and irrigation management. (abstract) Potato Association of America Proceedings. p. 48.Identifying Constraints to Potato System Sustainability: Soil Test Phosphorus and Soil Microbial Biomass Phosphorus

- (Proceedings)He, Z., Honeycutt, C.W., Griffin, T.S., Olanya, O.M., Larkin, R.P., Halloran, J.M. 2009. Identifying Constraints to Potato System Sustainability: Soil Test Phosphorus and Soil Microbial Biomass Phosphorus. Northeast Potato Technology Forum. Pages 3-6.Development of early and late blight under different cropping systems and irrigation management

- (Proceedings)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., Griffin, T.S., He, Z., Halloran, J.M. 2009. Development of early and late blight under different cropping systems and irrigation management. Northeast Potato Technology Forum. p. 9.Identifying constraints to potato system sustainability: soil and plant growth relationships

- (Proceedings)Honeycutt, C.W., Griffin, T.S., Larkin, R.P., He, Z., Olanya, O.M., Halloran, J.M. 2009. Identifying constraints to potato system sustainability: soil and plant growth relationships. Northeast Potato Technology Forum. p. 1.A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Effects on Soil Microbial Communities

- (Proceedings)Bernard, E., Larkin, R.P., Erich, M., Alyokhin, A., Gross, S., Tavantzis, S. 2009. A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Effects on Soil Microbial Communities. Northeast Potato Technology Forum Proceedings. p. 13.A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Effects on soil properties and fertility

- (Proceedings)Erich, M., Tavantzis, S., Larkin, R.P., Alyokhin, A., Gross, S., Bernard, E. 2009. A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Effects on soil properties and fertility. Northeast Potato Technology Forum Proceedings.  p. 12.A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Effects on soilborne diseases and tuber yield

- (Proceedings)Larkin, R.P., Tavantzis, S., Erich, M., Bernard, E., Gross, S., Alyokhin, A. 2009. A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Effects on soilborne diseases and tuber yield. Northeast Potato Technology Forum Proceedings.  p. 14.Identifying constraints to potato systems sustainability: Soilborne diseases and soil microbial communities

- (Proceedings)Larkin, R.P., Honeycutt, C.W., Griffin, T.S., Halloran, J.M., Olanya, O.M., He, Z. 2009. Identifying constraints to potato systems sustainability: Soilborne diseases and soil microbial communities. Northeast Potato Technology Forum Proceedings. p. 7.A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Introduction

- (Abstract Only)Tavantzis, S., Larkin, R.P., Alyokhin, A., Erich, M., Bernard, E., Gross, S. 2009. A systems approach for enhancing soil quality and plant health under organic and conventional conditions: Introduction. Northeast Potato Technology Forum. Proceedings page 10.Identifying and reducing constraints to potato productivity

- (Abstract Only)Honeycutt, C.W., Griffin, T.S., Larkin, R.P., Halloran, J.M., Olanya, O.M., He, Z. 2009. IDENTIFYING AND REDUCING CONSTRAINTS TO POTATO PRODUCTIVITY. Maine Potato Conference Abstracts. Page 23.Delayed tillage and cover crop effects in potato systems

- (Peer Reviewed Journal)Griffin, T.S., Larkin, R.P., Honeycutt, C.W. 2009. Delayed tillage and cover crop effects in potato systems. American Journal of Potato Research. 86(2):79-87.Infection Potential of Hairy Nightshade (Solanum sarrachoides) by Phytophthora Infestans and Late Blight Implications of the Alternate Host

- (Peer Reviewed Journal)Olanya, O.M., Plant, A.B., Larkin, R.P., Honeycutt, C.W. 2009. Infection Potential of Hairy Nightshade (Solanum sarrachoides) by Phytophthora Infestans and Late Blight Implications of the Alternate Host. Journal of Phytopathology. 157:427-437.THE ECONOMIC IMPACTS OF DISEASE SUPPRESSIVE ROTATIONS IN MAINE POTATO CROPPING SYSTEMS

- (Peer Reviewed Journal)Halloran, J.M., Larkin, R.P., Honeycutt, C.W., Griffin, T.S. 2008. The economic impacts of disease suppressive rotations in maine potato cropping systems. Crop Management. On-Line.Identifying Constraints to Potato System Sustainability: Soils

- (Proceedings)Honeycutt, C.W., Griffin, T.S., He, Z., Larkin, R.P., Olanya, O.M., Halloran, J.M. 2008. Identifying Constraints to Potato System Sustainability: Soils. Potato Association of America Proceedings. CD-ROM.Identifying Constraints to Potato Cropping System Sustainability

- (Abstract Only)Honeycutt, C.W., Griffin, T.S., Larkin, R.P., He, Z., Olanya, O.M., Halloran, J.M. 2008. Identifying Constraints to Potato Cropping System Sustainability. American Society of Agronomy Abstracts. Published on CD-Rom.Modifying Potato Systems to Reduce Yield Constraints

- (Abstract Only)Griffin, T.S., Honeycutt, C.W., Larkin, R.P., Halloran, J.M., Olanya, O.M., He, Z. 2008. Modifying Potato Systems to Reduce Yield Constraints. American Society of Agronomy Branch Meeting. CD-ROM.The economic impacts of disease suppressive rotations in Maine potato cropping systems

- (Peer Reviewed Journal)Halloran, J.M., Larkin, R.P., Honeycutt, C.W. 2008. The economic impacts of disease suppressive rotations in Maine potato cropping systems. Online. Crop Management doi: 10.1094/CM-2008-0912-01-RS.Enhancing Potato System Sustainability: Microclimate, Early Blight and Late Blight Potential

- (Abstract Only)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., Griffin, T.S., He, Z., Halloran, J.M. 2008. Enhancing Potato System Sustainability: Microclimate, Early Blight and Late Blight Potential. American Phytopathological Society Abstracts. 98:S115.Compost and Biological Amendment Effects on Soilborne Disease and Soil Microbial Communities

- (Abstract Only)Larkin, R.P., Tavantzis, S., Bernard, E., Alyokhin, A., Erich, S., Gross, S. 2008. Compost and Biological Amendment Effects on Soilborne Disease and Soil Microbial Communities. American Phytopathological Society. 98:586.Identifying Constraints to Potato System Sustainability: Diseases

- (Proceedings)Larkin, R.P., Olanya, O.M., Griffin, T.S., Honeycutt, C.W., He, Z., Halloran, J.M. 2008. Identifying Constraints to Potato System Sustainability: Diseases. Potato Association of America Proceedings. CD-ROM.Enhancing Potato System Sustainability: Storage and Cycling of Carbon and Plant Nutrients in Soil

- (Proceedings)Griffin, T.S., Honeycutt, C.W., He, Z., Larkin, R.P., Halloran, J.M., Olanya, O.M. 2008. Enhancing Potato System Sustainability: Storage and Cycling of Carbon and Plant Nutrients in Soil. Northeast Potato Technology Forum Abstracts. CD-ROM.Enhancing Potato System Sustainability: Assessing the Economic Potential of Alternative Systems

- (Abstract Only)Halloran, J.M., Honeycutt, C.W., Griffin, T.S., Larkin, R.P., Olanya, O.M., He, Z. 2008. Enhancing Potato System Sustainability: Assessing the Economic Potential of Alternative Systems. Northeast Potato Technology Forum Abstracts. CD-ROM.Compost and Biological Amendments in Potato Systems: Effects on Soil Microbial Communities

- (Abstract Only)Bernard, E., Larkin, R.P., Tavantzis, S., Erich, S., Alyokhin, A., Gross, S. 2008. Compost and Biological Amendments in Potato Systems: Effects on Soil Microbial Communities. Northeast Potato Technology Forum Abstracts.  CD-ROM.Compost and Biological Amendments in Potato Systems: Effects on Soil Properties and Fertility

- (Abstract Only)Erich, S., Tavantzis, S., Larkin, R.P., Alyokhin, A., Gross, S. 2008. Compost and Biological Amendments in Potato Systems: Effects on Soil Properties and Fertility. Northeast Potato Technology Forum Abstracts. CD-ROM.Reduced Pest Insect Densities Following Compost Application in Organic and Conventional Systems

- (Abstract Only)Gross, S., Alyokhin, A., Larkin, R.P., Erich, S., Tavantzis, S. 2008. Reduced Pest Insect Densities Following Compost Application in Organic and Conventional Systems. Northeast Potato Technology Forum Abstracts. CD-ROM.Compost and Biological Amendments in Potato Systems: Effects on Soilborne Diseases and Yield

- (Abstract Only)Tavantzis, S., Larkin, R.P., Alyokhin, A., Erich, S., Bernard, E., Gross, S. 2008. Compost and Biological Amendments in Potato Systems: Effects on Soilborne Diseases and Yield. Northeast Potato Technology Forum Abstracts. CD-ROM.Enhancing Potato System Sustainability: Soilborne Diseases and Soil Microbial Communities

- (Abstract Only)Larkin, R.P., Honeycutt, C.W., Griffin, T.S., Halloran, J.M., Olanya, O.M., He, Z. 2008. Enhancing Potato System Sustainability: Soilborne Diseases and Soil Microbial Communities. Northeast Potato Technology Forum Abstracts. CD-ROM.Enhancing Potato System Sustainability: Project Overview, Plant Growth, and Yield

- (Abstract Only)Honeycutt, C.W., Griffin, T.S., Larkin, R.P., Halloran, J.M., Olanya, O.M., He, Z. 2008. Enhancing Potato System Sustainability: Project Overview, Plant Growth, and Yield. Northeast Potato Technology Forum Abstracts. CD-ROM.Enhancing Potato System Sustainability: Microclimate, Early Blight and Late Blight Potential

- (Abstract Only)Olanya, O.M., Honeycutt, C.W., Larkin, R.P., Griffin, T.S., He, Z., Halloran, J.M. 2008. Enhancing Potato System Sustainability: Microclimate, Early Blight and Late Blight Potential. Northeast Potato Technology Forum Abstracts.Enhancing Potato System Sustainability: Crop Rotation Impacts on Soil Phosphatase Activity

- (Abstract Only)He, Z., Honeycutt, C.W., Griffin, T.S., Olanya, O.M., Larkin, R.P., Halloran, J.M. 2008. Enhancing Potato System Sustainability: Crop Rotation Impacts on Soil Phosphatase Activity. Northeast Potato Technology Forum Abstracts. p. 47-51.Effects of Biological Amendments on Black Scurf and Common Scab of Potato, 2007

- (Research Notes)Larkin, R.P. 2008. Effects of Biological Amendments on Black Scurf and Common Scab of Potato, 2007. Plant Disease Management Reports. Report 2:V052.Addressing Constraints to Potato Productivity

- (Proceedings)Griffin, T.S., Honeycutt, C.W., Larkin, R.P., Halloran, J.M., Olanya, O.M., He, Z. 2008. Addressing Constraints to Potato Productivity. Maine Potato Conference Abstracts. CD-ROM.Managing Soilborne Potato Diseases In The Northeast With Brassica Rotations

- (Abstract Only)Lynch, R.P., Larkin, R.P. 2008. Managing Soilborne Potato Diseases In The Northeast With Brassica Rotations. Phytopathology. CD-ROM.The Potato Systems Planner: A Successful Decision Support Tool for Growers

- (Proceedings)Honeycutt, C.W., Larkin, R.P., Halloran, J.M., Griffin, T.S. 2007. The Potato Systems Planner: A Successful Decision Support Tool for Growers. Symposium Proceedings. 2007, pg 87-88.Infection Potential of Hairy Nightshade By Phytophthora infestans and Epidemiological Implications of the Alternate Host

- (Abstract Only)Olanya, O.M., Larkin, R.P., Honeycutt, C.W. 2007. Infection Potential of Hairy Nightshade By Phytophthora infestans and Epidemiological Implications of the Alternate Host. American Phytopathological Society Abstracts. Vol 97 (7): S87, 2007Effects of Different Soil and Crop Management Strategies on Soil Microbial Communities and Soilborne Diseases of Potato

- (Abstract Only)Larkin, R.P., Griffin, T.S., Olanya, O.M., Starr, G.C., Honeycutt, C.W. 2007. Effects of Different Soil and Crop Management Strategies on Soil Microbial Communities and Soilborne Diseases of Potato. American Phytopathological Society Abstracts. Vol. 97(7): S61, 2007Linking Process Level Function and Beta-ammonia Oxidizer Community Dynamics Across Varying Soils Following Manure Application

- (Abstract Only)Fortuna, A., Honeycutt, C.W., Marsh, T.L., Griffin, T.S., Larkin, R.P., He, Z., Wienhold, B.J., Sistani, K.R., Albrecht, S.L., Woodbury, B.L., Torbert Iii, H.A., Powell, J.M., Hubbard, R.K., Eigenberg, R.A., Wright, R.J. 2007. Linking Process Level Function and Beta-ammonia Oxidizer Community Dynamics Across Varying Soils Following Manure Application. Ecological Society of America Abstracts. 2007 CD-ROM.Temperature, Relative Humidity and Pathogen Factors Influencing Phytophthora Infestans Development on Hairy Nightshade

- (Abstract Only)Olanya, O.M., Plant, A.B., Larkin, R.P., Honeycutt, C.W. 2007. Temperature, Relative Humidity and Pathogen Factors Influencing Phytophthora Infestans Development on Hairy Nightshade. Northeast Potato Technology Forum Abstracts. Pg. 48Relative Effects of Biological Amendments and Crop Rotations on  Soil Microbial Communities and Soilborne Diseases of Potato

- (Peer Reviewed Journal)Larkin, R.P. 2007. Relative Effects of Biological Amendments and Crop Rotations on  Soil Microbial Communities and Soilborne Diseases of Potato. Soil Biology and Biochemistry. 10:1016. 40:1341-1351.Effects of Compost and Biocontrol Amendments on Soilborne Diseases of Potato

- (Abstract Only)Larkin, R.P., Manmathan, H., Tavantzis, S. 2007. Effects of Compost and Biocontrol Amendments on Soilborne Diseases of Potato. Northeast Potato Technology Forum Abstracts.  CD-ROM.Effects of Compost and Biocontrol Amendments on Stem Canker, Black Scurf, and Common Scab of Potato, 2006

- (Research Notes)Larkin, R.P., Manmathan, H., Tavantzis, S. 2007. Effects of Compost and Biocontrol Amendments on Stem Canker, Black Scurf, and Common Scab of Potato, 2006. Plant Disease Management Reports. vol 1: p. v065.CONTROL OF SOILBORNE POTATO DISEASES USING BRASSICA GREEN MANURES

- (Peer Reviewed Journal)Larkin, R.P., Griffin, T.S. 2007. Control of soilborne potato diseases using brassica green manures. Crop Protection Journal. 26:1067-1077.The Potato Systems Planner: Integrating Cropping System Impacts on Crop Yield and Quality, Soil Biology, Nutrient Cycling, Diseases, and Economics

- (Abstract Only)Honeycutt, C.W., Larkin, R.P., Halloran, J.M., Griffin, T.S. 2006. The Potato Systems Planner: Integrating Cropping System Impacts on Crop Yield and Quality, Soil Biology, Nutrient Cycling, Diseases, and Economics. Soil Science Society of America Annual Meeting. Published on CD-ROMThe Potato Systems Planner: Cropping System Impacts on Profitability, Income Variability, and Economic Risk

- (Abstract Only)Halloran, J.M., Honeycutt, C.W., Larkin, R.P., Griffin, T.S. 2006. The Potato Systems Planner: Cropping System Impacts on Profitability, Income Variability, and Economic Risk. American Society of Agronomy Abstracts. Published on CD-ROMThe Potato Systems Planner: Cropping System Impacts on Soilborne Diseases and Soil Microorganisms

- (Abstract Only)Larkin, R.P., Griffin, T.S., Halloran, J.M., Honeycutt, C.W. 2006. The Potato Systems Planner: Cropping System Impacts on Soilborne Diseases and Soil Microorganisms. American Society of Agronomy Abstracts. Published on CD-ROMTowards National Prediction of Manure N Availability: Soil Influence on Nitrifier Community and Nitrification

- (Abstract Only)Fortuna, A., Honeycutt, C.W., Marsh, T.L., Griffin, T.S., Larkin, R.P., He, Z., Wienhold, B.J., Sistani, K.R., Albrecht, S.L., Woodbury, B.L., Torbert Iii, H.A., Powell, J.M., Hubbard, R.K., Eigenberg, R.A., Wright, R.J. 2006. Towards National Prediction of Manure N Availability: Soil Influence on Nitrifier Community and Nitrification. American Society of Agronomy Abstracts. November 12-16, 2006, Indianapolis, Indiana. 2006 CD-ROM.BIOLOGICAL AMENDMENTS AND CROP ROTATIONS FOR MANAGING SOIL MICROBIAL COMMUNITIES AND SOILBORNE DISEASES OF POTATO

- (Abstract Only)Larkin, R.P. 2006. Biological amendments and crop rotations for managing soil microbial communities and soilborne diseases of potato. World Congress of Soil Science. CD-ROMCROP ROTATION AND COVER CROP EFFECTS ON SOILBORNE DISEASES OF POTATO

- (Abstract Only)Larkin, R.P., Griffin, T.S., Honeycutt, C.W. 2006. Crop rotation and cover crop effects on soilborne diseases of potato. Phytopathology.  CD-ROMBRASSICA ROTATIONS FOR MANAGING SOILBORNE POTATO DISEASES IN THE NORTHEAST

- (Abstract Only)Larkin, R.P., Lynch, R.P., Griffin, T.S., Honeycutt, C.W. 2006. Brassica rotations for managing soilborne potato diseases in the northeast. University of Idaho Miscellaneous Publication. CD-ROMDISTRIBUTUION OF HAIRY NIGHTSHADE IN MAINE POTATO AGRO-ECOSYSTEMS AND POTENTIAL RISKS OF INFECTION BY PHYTOPHTHORA INFESTANS

- (Abstract Only)Olanya, O.M., Plant, A.B., Larkin, R.P., Lambert, D.H. 2006. Distributuion of hairy nightshade in maine potato agro-ecosystems and potential risks of infection by phytophthora infestans. Northeast Potato Technology Forum Abstracts.  CD-ROMEFFECTS OF A FALL COVER CROP AND DIFFERENT 2-YEAR ROTATIONS ON SOILBORNE DISEASES AND SOIL MICROBIAL COMMUNITIES

- (Abstract Only)Larkin, R.P., Griffin, T.S., Honeycutt, C.W. 2006. Effects of a fall cover crop and different 2-year rotations on soilborne diseases and soil microbial communities. Northeast Potato Technology Forum Abstracts.  CD-ROMTHE POTATO SYSTEMS PLANNER: A CASE OF INDUSTRY DRIVEN RESEARCH

- (Abstract Only)Honeycutt, C.W., Larkin, R.P., Halloran, J.M., Griffin, T.S. 2006. The potato systems planner: a case of industry driven research. Northeast Potato Technology Forum Abstracts. CD-ROMEFFECTS OF CROP ROTATIONS AND A FALL COVER CROP ON RHIZOCTONIA CANKER, BLACK SCURF, AND COMMON SCAB OF POTATO, 2004

- (Peer Reviewed Journal)Larkin, R.P., Griffin, T.S., Honeycutt, C.W. 2006. Effects of crop rotations and a fall cover crop on rhizoctonia canker, black scurf, and common scab of potato, 2004. Biological and Cultural Tests for Control of Plant Diseases. Vol. 21: V009EFFICACY OF ESSENTIAL OILS AND BIOPESTICIDES ON PHYTOPHTHORA INFESTANS SUPPRESSION IN LABORATORY AND GROWTH CHAMBER STUDIES

- (Peer Reviewed Journal)Olanya, O.M., Larkin, R.P. 2006. Efficacy of Essential Oils and Biopesticides on Phytophthora Infestans Suppression in Laboratory and Growth Chamber Studies. Biocontrol Science and Technology; 16:901-917.LATE BLIGHT DEVELOPMENT ON HAIRY NIGHTSHADE AND POTENTIAL DISEASE RISKS

- (Abstract Only)Olanya, O.M., Plant, A.B., Larkin, R.P., Lambert, D.H. 2006. Late blight development on hairy nightshade and potential disease risks. Maine Potato Conference Abstracts. Page 20.THE POTATO SYSTEMS PLANNER

- (Abstract Only)Honeycutt, C.W., Larkin, R.P., Halloran, J.M., Griffin, T.S. 2006. The potato systems planner. Maine Potato Conference Abstracts. CD-ROMEFFECT OF SWINE AND DAIRY MANURE AMENDMENTS ON MICROBIAL COMMUNITIES IN THREE SOILS AS INFLUENCED BY ENVIRONMENTAL CONDITIONS

- (Peer Reviewed Journal)Larkin, R.P., Honeycutt, C.W., Griffin, T.S. 2005. Effect of swine and dairy manure amendments on microbial communities in three soils as influenced by environmental conditions. Biology and Fertility of Soils. December 2005. 42: 1-11.POTATO ROTATIONS AND SOIL MANAGEMENT: LOOKING AT THE LONG-TERM

- (Proceedings)Griffin, T.S., Larkin, R.P., Honeycutt, C.W. 2005. Potato rotations and soil management: looking at the long-term. New England Vegetable and Fruit Conference Proceedings.EFFECTS OF DIFFERENT 3-YR CROPPING SYSTEMS ON SOIL MICROBIAL COMMUNITIES AND SOILBORNE DISEASE OF POTATO

- (Peer Reviewed Journal)Larkin, R.P., Honeycutt, C.W. 2004. Effects of different 3-yr cropping systems on soil microbial communities and soilborne disease of potato. Phytopathology. 96: 68-79EFFECTS OF TEMPERATURE AND RELATIVE HUMIDITY ON DEVELOPMENT OF LATE BLIGHT INCITED BY PHYTOPHTHORA INFESTANS ISOLATES FROM DIVERSE GENOTYPES AND HOSTS

- (Abstract Only)Olanya, O.M., Larkin, R.P. 2005. Effects of temperature and relative humidity on development of Late Blight incited by phytophthora Infestans isolates from diverse genotypes and hosts. American Phytopathological Society Abstracts. July 2005; v. 95. p. S77.EFFECTS OF BIOLOGICAL AMENDMENTS ON SOIL MICROBIOLOGY AND SOILBORNE POTATO DISEASES IN DIFFERENT CROPPING SYSTEMS

- (Abstract Only)Larkin, R.P. 2005. Effects of biological amendments on soil microbiology and soilborne potato diseases in different cropping systems. Phytopathology. v. 95. p. S-56.EFFICACY OF SEVERAL POTENTIAL BIOCONTROL ORGANISMS AGAINST RHIZOCTONIA SOLANI ON POTATO

- (Peer Reviewed Journal)Brewer, M.T., Larkin, R.P. 2005. Efficacy of several potential biocontrol organisms against rhizoctonia solani on potato. Crop Protection Journal. 24: 939-950ALTERNATIVE BIOLOGICAL AMENDMENTS: EFFECTS ON SOIL BIOLOGY AND SOILBORNE DISEASES

- (Abstract Only)Larkin, R.P. 2005. Alternative biological amendments: effects on soil biology and soilborne diseases. Northeast Potato Technology Forum Abstracts. pages 43-44INFLUENCE OF BIOCONTROL AGENTS AND OTHER BIOLOGICAL AMENDMENTS ON SOIL MICROBIAL COMMUNITIES

- (Abstract Only)Larkin, R.P. 2004. Influence of biocontrol agents and other biological amendments on soil microbial communities. American Phytopathological Society Abstracts. 94: S56COMPARISON OF LATE BLIGHT SUPPRESSION BY NATURAL PRODUCTS AND THE IMPACT OF GENOTYPE DIVERSITY ON DISEASE DEVELOPMENT AND CONTROL

- (Abstract Only)Olanya, O.M., Larkin, R.P., Honeycutt, C.W. 2004. Comparison of late blight suppression by natural products and the impact of genotype diversity on disease development and control. American Phytopathological Society Abstracts.vol 94 (6): pg S77-S78.  (#P-2004-0525-AMA)SUPPRESSION OF PHYTOPHTHORA INFESTANS BY ESSENTIAL OILS AND NATURAL PRODUCTS IN LAB ASSAYS AND GROWTH CHAMBER STUDIES

- (Abstract Only)Olanya, O.M., Larkin, R.P. 2004. Suppression of phytophthora infestans by essential oils and natural products in lab assays and growth chamber studies. Northeast Potato Technology Forum Abstracts. pg 29AN ECONOMIC ANALYSIS OF DISEASE SUPPRESSIVE ROTATIONS IN MAINE POTATO CROPPING SYSTEMS

- (Abstract Only)Halloran, J.M., Larkin, R.P., Griffin, T.S., Honeycutt, C.W. 2004. An economic analysis of disease suppressive rotations in maine potato cropping systems. Northeast Potato Technology Forum Abstracts. 2004: 39BRASSICA CROP ROTATIONS FOR CONTROL OF SOILBORNE POTATO DISEASES

- (Abstract Only)Larkin, R.P., Griffin, T.S. 2004. Brassica crop rotations for control of soilborne potato diseases. Northeast Potato Technology Forum Abstracts. 2004: 37-38IDENTIFICATION AND CHARACTERIZATION OF ISOLATES OF PHYTOPHTHORA INFESTANS USING FATTY ACID METHYL ESTER (FAME) PROFILES

- (Abstract Only)Larkin, R.P., Groves, C.L. 2003. Identification and characterization of isolates of phytophthora infestans using fatty acid methyl ester (fame) profiles. Plant Disease  87:1233-1243EFFECTS OF MICROBIAL ANTAGONISTS AND A RYEGRASS ROTATION ON RHIZOCTONIA DISEASE OF POTATO

- (Abstract Only)Brewer, M.T., Larkin, R.P. 2003. Effects of microbial antagonists and a ryegrass rotation on rhizoctonia disease of potato. Phytopathology. 94: S163CHARACTERIZATION OF SOIL MICROBIAL COMMUNITIES UNDER DIFFERENT POTATO  CROPPING SYSTEMS IN MAINE BY MICROBIAL POPULATION DYNAMICS, SUBSTRATE  UTILIZATION, AND FATTY ACID PROFILES

- (Peer Reviewed Journal)Larkin, R.P. 2003. Characterization of soil microbial communities under different potato      cropping systems in maine by microbial population dynamics, substrate      utilization, and fatty acid profiles. Soil Biology and Biochemistry.  35: 1451-1466IDENTIFICATION AND CHARACTERIZATION OF ISOLATES OF PHYTOPHTHORA INFESTANS USING FATTY ACID METHYL ESTER (FAME) PROFILES

- (Peer Reviewed Journal)Larkin, R.P., Groves, C.L. 2003. Identification and characterization of isolates of phytophthora infestans using fatty acid methyl ester (fame) profiles. Plant Disease. 87: 1233-1243COMBINING BIOLOGICAL PRODUCTS AND GREEN SPROUTING FOR CONTROL OF SOILBORNE DISEASES OF POTATO

- (Abstract Only)Larkin, R.P. 2003. Combining biological products and green sprouting for control of soilborne diseases of potato. Phytopathology. 93: S48CONTROL OF SOILBORNE PATHOGENS OF POTATO WITH BRASSICA CROP ROTATIONS

- (Abstract Only)Larkin, R.P., Griffin, T.S. 2003. Control of soilborne pathogens of potato with brassica crop rotations. Phytopathology. 93: S48CROPPING SYSTEM EFFECTS ON SOIL MICROBIAL COMMUNITIES AND SOILBORNE DISEASES

- (Abstract Only)Larkin, R.P. 2003. Cropping system effects on soil microbial communities and soilborne diseases. Northeast Potato Technology Forum Abstracts. cd-rom DISK 3/15/2003EFFECT OF GREEN SPROUTING AND BIOCONTROL PRODUCTS ON SOILBORNE DISEASES OF POTATO 2002

- (Peer Reviewed Journal)Larkin, R.P. 2003. Effect of green sprouting and biocontrol products on soilborne diseases of potato 2002. Biological and Cultural Tests for Control of Plant Diseases. 18: PT011EFFECT OF SWINE AND DAIRY MANURE AMENDMENTS ON MICROBIAL COMMUNITIES IN THREE SOILS

- (Abstract Only)Larkin, R.P., Honeycutt, C.W., Griffin, T.S. 2002. Effect of swine and dairy manure amendments on microbial communities in three soils. Agronomy Abstracts. cd-rom DISKSUPPRESSION OF RHIZOCTONIA DISEASE OF POTATO BY BIOLOGICAL CONTROL AND A RYEGRASS ROTATION

- (Abstract Only)Larkin, R.P., Talbot, M.M. 2002. Suppression of rhizoctonia disease of potato by biological control and a ryegrass rotation. National American Phytopathology Meetings. 92: S80REDUCTION OF FUSARIUM WILT OF HYDROPONICALLY-GROWN BASIL BY FUSARIUM       OXYSPORUM STRAIN CS-20

- (Peer Reviewed Journal)BIOLOGICAL CONTROL OF FUSARIUM WILT DISEASES BY NONPATHOGENIC FUSARIUM SPP:FORMULATIONS AND FIELD EFFICACY

- (Abstract Only)FIELD EFFICACY OF SELECTED NONPATHOGENIC FUSARIUM SPP. AND OTHER BIOCONTROLAGENTS FOR THE MANAGEMENT OF FUSARIUM WILT OF MUSKMELON, 1997-1998

- (Peer Reviewed Journal)FIELD EFFICACY OF SELECTED NONPATHOGENIC FUSARIUM SPP. AND OTHER BIOCONTROLAGENTS FOR THE CONTROL OF FUSARIUM WILT OF TOMATO, 1997-1998

- (Peer Reviewed Journal)EFFECT OF SUBLETHAL STRESSES ON MICROSCLEROTIA OF VERTICILLIUM DAHLIAE

- (Book / Chapter)EFFICACY OF VARIOUS BIOCONTROL ORGANISMS IN THE CONTROL OF FUSARIUM WILT OFTOMATO

- (Abstract Only)EFFICACY OF VARIOUS FUNGAL AND BACTERIAL BIOCONTROL ORGANISMS FOR THE      CONTROL OF FUSARIUM WILT OF TOMATO

- (Peer Reviewed Journal)MECHANISMS OF ACTION AND DOSE-RESPONSE RELATIONSHIPS GOVERNING BIOLOGICAL  CONTROL OF FUSARIUM WILT OF TOMATO BY NONPATHOGENIC FUSARIUM SPP

- (Peer Reviewed Journal)FORMULATION OF THE BIOCONTROL FUNGUS CLADORRHINUM FOECUNDISSIMUM TO REDUCE DAMPING-OFF DISEASES CAUSED BY RHIZOCTONIA SOLANI AND PYTHIUM ULTIMUM

- (Peer Reviewed Journal)BIOLOGICAL CONTROL OF FUNGAL DISEASES

- (Book / Chapter)A CELLULOSE GRANULE FORMULATION OF TRICHODERMA AND GLIOCLADIUM TO REDUCE   DAMPING-OFF CAUSED BY RHIZOCTONIA SOLANI AND SAPROPHYTIC GROWTH OF THE     PATHOGEN IN SOILLESS MIX

- (Peer Reviewed Journal)EFFICACY OF BIOLOGICAL CONTROL OF FUSARIUM WILT OF TOMATO UNDER VARYING    ENVIRONMENTAL CONDITIONS

- (Abstract Only)ROLE OF INDUCED SYSTEMIC RESISTANCE IN THE BIOCONTROL OF PLANT DISEASES BY FUSARIUM SPP.

- (Abstract Only)ECOLOGICAL CHARACTERISTICS OF BIOLOGICAL CONTROL OF FUSARIUM WILT OF       TOMATO USING NONPATHOGENIC FUSARIUM SPP

- (Abstract Only)BIOLOGICAL CONTROL OF FUSARIUM WILT OF TOMATO USING NONPATHOGENIC FUSARIUM OXYSPORUM

- (Abstract Only)AVAILABILITY AND APPLICATION OF BIOCONTROL PRODUCTS

- (Review Article)THE APPLICATION OF AN EXTRUDED GRANULAR FORMULATION ...GLIOCLADIUM VIRENS  AND TRICHODERMA SPP. TO REDUCE DAMPING-OFF OF EGGPLANT CAUSED BY           RHIZOCTONIA SOLANI AND SAPROPHYTIC GROWTH OF THE PATHOGEN IN SOILLESS MIX

- (Peer Reviewed Journal)SUPPRESSION OF FUSARIUM WILT OF WATERMELON BY NONPATHOGENIC FUSARIUM       OXYSPORUM AND OTHER MICROORGANISMS RECOVERED FROM A DISEASE-SUPPRESSIVE    SOIL

- (Peer Reviewed Journal)GENETIC APPROACHES FOR ANALYSIS AND MANIPULATION OF RHIZOSPHERE            COLONIZATION BY BACTERIAL BIOCONTROL AGENTS

- (Book / Chapter)EFFECT OF TEMPERATURE, SOIL TYPE AND MATRIC POTENTIAL ON PROLIFERATION     AND SURVIVAL OF FUSARIUM OXYSPORUM F. SP. ERYTHROXYLI FROM ERYTHROXYLUM    COCA

- (Peer Reviewed Journal)
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                                                Multiple Studies Pay Off for Maine Potato Producers


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