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ARS Home » Plains Area » Fargo, North Dakota » Edward T. Schafer Agricultural Research Center » Sunflower Improvement Research » People & Locations » Jarrad Prasifka
Jarrad R Prasifka (PhD)
Sunflower Improvement Research
Research Entomologist

Phone: (701) 239-1313
Fax: (701) 239-1346

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
Sunflower Yield, Crop Quality, and Interactions with Biotic and Abiotic Stressors
In-House Appropriated (D)
  Accession Number: 445350
Nutritional Analysis of Pollen from Bee Pollinated Plants
Interagency Reimbursable Agreement (I)
  Accession Number: 442675
Red Sunflower Seed Weevil Responses to Conspecific and Host Volatiles
Non-Assistance Cooperative Agreement (S)
  Accession Number: 443708
Predictive Crop Performance Research Initiative
Non-Assistance Cooperative Agreement (S)
  Accession Number: 444444
Application of Sensors and Image Analysis to Improve Phenotyping Throughput of Sunflower Germplasm
Non-Assistance Cooperative Agreement (S)
  Accession Number: 444544
Next Generation Sequencing of the USDA Sunflower Breeding Program and Identification of Red Sunflower Seed Weevil Resistance Genes
Non-Assistance Cooperative Agreement (S)
  Accession Number: 444659
Insect Responses to Intraspecific Floral Trait Variation in Asteraceae
Non-Assistance Cooperative Agreement (S)
  Accession Number: 445009
Integrated Pest Management of Sunflower Insects
Non-Assistance Cooperative Agreement (S)
  Accession Number: 438009
Sunflower Pollinator Foraging on Non-Helianthus Plants
Non-Assistance Cooperative Agreement (S)
  Accession Number: 441964

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Efficacy of red sunflower seed weevil resistance from inbred line cms HA 488 in single-cross hybrids Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Hulke, B.S. 2024. Efficacy of red sunflower seed weevil resistance from inbred line cms HA 488 in single-cross hybrids. Agronomy Journal. 116:2081-2084. https://doi.org/10.1002/agj2.21613.
Development of a degree-day model for adult emergence of the red sunflower seed weevil, Smicronyx fulvus LeConte (Coleoptera: Curculionidae) Reprint Icon - (Peer Reviewed Journal)
Pantzke, S., Rajamohan, A., Ferguson, B., Rinehart, J.P., Prischmann-Voldseth, D.A., Prasifka, J.R. 2024. Development of a degree-day model for adult emergence of the red sunflower seed weevil, Smicronyx fulvus LeConte (Coleoptera: Curculionidae). Journal of Kansas Entomological Society. 97(1):26-38.
Honey bee (Apis mellifera L.) foraging rewards in sunflowers: effect of floral traits on visitation and variation in pollen quality over two consecutive years Reprint Icon - (Peer Reviewed Journal)
Ferguson, M., Prasifka, J.R., Carroll, M.J., Corby-Harris, V.L., Hoffman, G.D. 2024. Honey bee (Apis mellifera L.) foraging rewards in sunflowers: effect of floral traits on visitation and variation in pollen quality over two consecutive years. Journal of Apicultural Research. https://doi.org/10.1080/00218839.2024.2364948.
Pollen quantity, but not grain size, is correlated with floret size in in cultivated sunflower, Helianthus annuus L Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Portlas, Z.M., Hulke, B.S. 2023. Pollen quantity, but not grain size, is correlated with floret size in in cultivated sunflower, Helianthus annuus L. Plant Genetic Resources. 21(3):269-273. https://doi.org/10.1017/S1479262123000709.
Impact of multiple soil microbial inoculants on biomass and biomass allocation on the legume crop field pea (Fabaceae: Pisum sativum L.) Reprint Icon - (Peer Reviewed Journal)
Glogoza, B., Aldrich-Wolfe, L., Prasifka, J.R., Prischmann-Voldseth, D.A. 2023. Impact of multiple soil microbial inoculants on biomass and biomass allocation on the legume crop field pea (Fabaceae: Pisum sativum L.). Journal of Sustainable Agriculture. 2(3):314-327. https://doi.org/10.1002/sae2.12060.
Thermal biology and overwintering behavior of the red sunflower seed weevil (Coleoptera: Curculionidae) - (Peer Reviewed Journal)
Pantzke, S., Ferguson, B., Rajamohan, A., Rinehart, J.P., Prischmann-Voldseth, D., Prasifka, J.R. 2023. Thermal biology and overwintering behavior of the red sunflower seed weevil (Coleoptera: Curculionidae). Environmental Entomology. https://doi.org/10.1093/ee/nvad041.
Genotype and environment effects on sunflower nectar and their relationships to crop pollination Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Yoshimura Ferguson, M.E., Fugate, K.K. 2023. Genotype and environment effects on sunflower nectar and their relationships to crop pollination. Journal of Pollination Ecology. 33(4):54-63. https://doi.org/10.26786/1920-7603(2023)719.
Genetic mapping of a pollinator preference trait: Nectar volume in sunflower (Helianthus annuus L.) Reprint Icon - (Peer Reviewed Journal)
Barstow, A., Prasifka, J.R., Attia, Z., Kane, N.C., Hulke, B.S. 2022. Genetic mapping of a pollinator preference trait: Nectar volume in sunflower (Helianthus annuus L.). Frontiers in Plant Science. 13(2022). https://doi.org/10.3389/fpls.2022.1056278.
Degree-day model for adult emergence of the red sunflower seed weevil - (Abstract Only)
Vitrification of lepidopteran embryos - a simple protocol to cryopreserve the embryos of the sunflower moth, Homoeosoma electellum Reprint Icon - (Peer Reviewed Journal)
Rajamohan, A., Prasifka, J.R., Rinehart, J.P. 2022. Vitrification of lepidopteran embryos - a simple protocol to cryopreserve the embryos of the sunflower moth, Homoeosoma electellum. Insects. 13(10). Article 959. https://doi.org/10.3390/insects13100959.
Changes to architecture of Silphium integrifolium Michx. during domestication reveal new trade-offs for yield Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Peterson, K., Mallinger, R.E., Van Tassel, D. 2022. Changes to architecture of Silphium integrifolium Michx. during domestication reveal new trade-offs for yield. Crop Science. 62:1060-1068. https://doi.org/10.1002/csc2.20737.
Pollinator responses to variation in sunflower crop traits - (Abstract Only)
Bee community interactions: observations in foraging on commercial sunflowers - (Abstract Only)
Overwintering, freezing point, and thermal biology of the red sunflower seed weevil, Smicronyx fulvus LeConte - (Abstract Only)
Bee community composition, but not diversity, is influenced by floret size in cultivated sunflowers Reprint Icon - (Peer Reviewed Journal)
Yoshimura Ferguson, M.E., Mallinger, R., Prasifka, J.R. 2021. Bee community composition, but not diversity, is influenced by floret size in cultivated sunflowers. Apidologie. 52:1210-1222. https://doi.org/10.1007/s13592-021-00897-z.
Testing for evolutionary change in restoration: A genomic comparison between ex situ, native and commercial seed sources of Helianthus maximiliani - (Pre-print Publication)
Testing for evolutionary change in restoration: a genomic comparison between ex situ, native and commercial seed sources of Helianthus maximiliani Reprint Icon - (Peer Reviewed Journal)
Braasch, J.E., Di Santo, L.N., Tarble, Z., Prasifka, J.R., Hamilton, J.A. 2021. Testing for evolutionary change in restoration: a genomic comparison between ex situ, native and commercial seed sources of Helianthus maximiliani. Evolutionary Applications. 14:2206-2220. http://dx.doi.org/10.1111/eva.13275.
Fatty acid data and crop surveys indicate sources of red seed weevil populations and suggest strategies for management - (Abstract Only)
Prasifka, J.R., Anderson, J.V. 2020. Fatty acid data and crop surveys indicate sources of red seed weevil populations and suggest strategies for management[abstract]. National Sunflower Association. 90:18.
Fatty acid data and crop surveys indicate sources of red sunflower seed weevil, Smicronyx fulvus LeConte (Coleoptera: Curculionidae), populations and suggest strategies for management Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Ferguson, B., Anderson, J.V. 2020. Fatty acid data and crop surveys indicate sources of red sunflower seed weevil, Smicronyx fulvus LeConte (Coleoptera: Curculionidae), populations and suggest strategies for management. Environmental Entomology. 50(1):154-159. https://doi.org/10.1093/ee/nvaa158.
Susceptibility of sunflower inbred lines and putative resistance sources to Smicronyx fulvus LeConte (Coleoptera: Curculionidae) Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R. 2020. Susceptibility of sunflower inbred lines and putative resistance sources to Smicronyx fulvus LeConte (Coleoptera: Curculionidae). Journal of Applied Entomology. 144(7):632-636. https://doi.org/10.1111/jen.12772.
Registration of oilseed sunflower maintainer germplasm HA 488, with resistance to the red sunflower seed weevil Reprint Icon - (Peer Reviewed Journal)
DeGreef, M.G., Prasifka, J.R., Koehler, B.D., Hulke, B.S. 2020. Registration of oilseed sunflower maintainer germplasm HA 488, with resistance to the red sunflower seed weevil. Journal of Plant Registrations. 14:203-205. https://doi.org/10.1002/plr2.20035.
Registration of oilseed sunflower maintainer germplasm HA 489, with resistance to the banded sunflower moth Reprint Icon - (Peer Reviewed Journal)
Wronski, A.R., Prasifka, J.R., Grove, M.S., Koehler, B.D., Misar, C.G., Underwood, W., Hulke, B.S. 2020. Registration of oilseed sunflower maintainer germplasm HA 489, with resistance to the banded sunflower moth. Journal of Plant Registrations. 14:197-202. https://doi.org/10.1002/plr2.20030.
Capitate glandular trichomes fail to provide significant resistance to banded sunflower moth (Lepidoptera: Tortricidae) Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Hulke, B.S. 2020. Capitate glandular trichomes fail to provide significant resistance to banded sunflower moth (Lepidoptera: Tortricidae). Environmental Entomology. 49(2):444-448. https://doi.org/10.1093/ee/nvaa002.
Updates on sunflower pollinator research: understanding interactions of plant phenotype, environment, and pollinator identity - (Abstract Only)
Ferguson, B., Hulke, B.S., Prasifka, J.R. 2020. Updates on sunflower pollinator research: understanding interactions of plant phenotype, environment, and pollinator identity [abstract]. National Sunflower Association Research Forum. 90:19.
Banded sunflower moth - (Experiment Station)
Knodel, J.J., Prasifka, J.R. 2019. Banded sunflower moth. Extension Publications. 1-8.
Pest potential of Neotephritis finalis (Loew) on Silphium integrifolium Michx., Silphium perfoliatum L., and interspecific hybrids Reprint Icon - (Peer Reviewed Journal)
Reinert, S., Hulke, B.S., Prasifka, J.R. 2020. Pest potential of Neotephritis finalis (Loew) on Silphium integrifolium Michx., Silphium perfoliatum L., and interspecific hybrids. Agronomy Journal. 112:1462-1465. https://doi.org/10.1002/agj2.20078.
Seed and floret size parameters of sunflower are determined by partially overlapping sets of quantitative trait loci with epistatic interactions Reprint Icon - (Peer Reviewed Journal)
Reinert, S., Gao, Q., Ferguson, M.E., Portlas, Z., Prasifka, J.R., Hulke, B.S. 2019. Seed and floret size parameters of sunflower are determined by partially overlapping sets of quantitative trait loci with epistatic interactions. Molecular Genetics and Genomics. 295:143-154. https://doi.org/10.1007/s00438-019-01610-7.
Concentrations of sunflower phenolics appear insufficient to explain resistance to floret- and seed-feeding caterpillars Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Wallis, C.M. 2019. Concentrations of sunflower phenolics appear insufficient to explain resistance to floret- and seed-feeding caterpillars. Arthropod-Plant Interactions. 13:915-921. https://doi.org/10.1007/s11829-019-09706-y.
Fatty acid composition and crop survey data indicate sources of red sunflower seed weevil infestations and have implications for IPM and IRM - (Abstract Only)
Prasifka, J.R., Anderson, J.V. 2019. Fatty acid composition and crop survey data indicate sources of red sunflower seed weevil infestations and have implications for IPM and IRM [abstract]. Entomological Society of America. 0590.
Cochylis hospes (Lepidoptera: Tortricidae) damage to male lines varies significantly and inbred susceptibility predicts damage to hybrids Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R. 2019. Cochylis hospes (Lepidoptera: Tortricidae) damage to male lines varies significantly and inbred susceptibility predicts damage to hybrids. The Canadian Entomologist. 151:817-823.
Annual cover crops for managed and wild bees: Optimal plant mixtures depend on pollinator enhancement goals Reprint Icon - (Peer Reviewed Journal)
Mallinger, R., Franco Jr, J.G., Prischmann-Voldseth, D.A., Prasifka, J.R. 2018. Annual cover crops for managed and wild bees: Optimal plant mixtures depend on pollinator enhancement goals. Agriculture, Ecosystems and Environment. 273(1):107-116. https://doi.org/10.1016/j.agee.2018.12.006.
Native solitary bees provide economically significant pollination services to confection sunflowers (Helianthus annuusL.) (Asterales:Asteraceae) grown across the northern Great Plains Reprint Icon - (Peer Reviewed Journal)
Mallinger, R.E., Bradshaw, J., Varenhorst, A.J., Prasifka, J.R. 2018. Native solitary bees provide economically significant pollination services to confection sunflowers (Helianthus annuusL.) (Asterales:Asteraceae) grown across the northern Great Plains. Journal of Economic Entomology. https://doi.org/10.1093/jee/toy322.
Sunflower floral dimension measurements using digital image processing Reprint Icon - (Peer Reviewed Journal)
Shajahan, S., Navaneeth, S., Babu, D., Cannayen, I., Franco Jr, J.G., Mallinger, R.E., Prasifka, J.R., Archer, D.W. 2018. Sunflower floral dimension measurements using digital image processing. Computers and Electronics in Agriculture. 151:403-415. https://doi.org/10.1016/j.compag.2018.06.026.
Using nectar-related traits to enhance crop-pollinator interactions Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Mallinger, R.E., Portlas, Z.M., Hulke, B.S., Fugate, K.K., Paradis, T., Hampton, M.E., Carter, C.J. 2018. Using nectar-related traits to enhance crop-pollinator interactions. Frontiers in Plant Science. https://doi.org/10.3389/fpls.2018.00812.
Phenotypic integration in an extended phenotype: among-individual variation in nest-building traits of the alfalfa leafcutting bee (Megachile rotundata) Reprint Icon - (Peer Reviewed Journal)
Royaute, R., Wilson, E.S., Helm, B.R., Mallinger, R.E., Prasifka, J.R., Greenlee, K.J., Bowsher, J.H. 2018. Phenotypic integration in an extended phenotype: among-individual variation in nest-building traits of the alfalfa leafcutting bee (Megachile rotundata). Journal of Evolutionary Biology. https://doi.org/10.1111/jeb.13259.
Variation in floret size explains differences in wild bee visitation to cultivated sunflowers - (Peer Reviewed Journal)
Portlas, Z.M., Tetlie, J.R., Prischmann-Voldseth, D., Hulke, B.S., Prasifka, J.R. 2018. Variation in floret size explains differences in wild bee visitation to cultivated sunflowers. Plant Genetic Resources. https://doi.org/10.1017/S1479262118000072.
Genetic architecture of capitate glandular trichome density in florets of domesticated sunflower (Helianthus annuus L.) Reprint Icon - (Peer Reviewed Journal)
Gao, Q.M., Kane, N.C., Hulke, B.S., Reinert, S., Pogoda, C.S., Tittes, S., Prasifka, J.R. 2018. Genetic architecture of capitate glandular trichome density in florets of domesticated sunflower (Helianthus annuus L.). Frontiers in Plant Science. https://doi.org/10.3389/fpls.2017.02227.
Benefits of insect pollination to confection sunflowers differ across plant genotypes Reprint Icon - (Peer Reviewed Journal)
Mallinger, R.E., Prasifka, J.R. 2017. Benefits of insect pollination to confection sunflowers differ across plant genotypes. Crop Science. 57(6):3264-3272. https://doi.org/10.2135/cropsci2017.03.0148.
Reassessment of resistance to sunflower stem weevil, Cylindrocopterus adspersus LeConte (Coleoptera: Curculionidae), in cultivated sunflower germplasm Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Bradshaw, J.D., Aiken, R.M. 2018. Reassessment of resistance to sunflower stem weevil, Cylindrocopterus adspersus LeConte (Coleoptera: Curculionidae), in cultivated sunflower germplasm. Journal of Kansas Entomological Society. 90(3):204-210. https://doi.org/10.2317/0022-8567-90.3.204.
Plant-herbivore and plant-pollinator interactions of the developing perennial oilseed crop, Silphium integrifolium Reprint Icon - (Peer Reviewed Journal)
Prasifka, J.R., Mallinger, R.E., Hulke, B.S., Larson, S.R., Van Tassel, D. 2017. Plant-herbivore and plant-pollinator interactions of the developing perennial oilseed crop, Silphium integrifolium. Environmental Entomology. 46(6):1339-1345. https://doi.org/10.1093/ee/nvx134.
Accelerating Silphium domestication: an opportunity to develop new crop ideotypes and breeding strategies informed by multiple disciplines - (Review Article)
Van Tassel, D.L., Albrecht, K.A., Bever, J.D., Boe, A.A., Brandvain, Y., Crews, T.E., Gansberger, M., Gerstberg, P., Gonzalez-Paleo, L., Hulke, B.S., Kane, N.C., Johnson, P.J., Pestsova, E.G., Picasso Risso, V.D., Prasifka, J.R., Ravetta, D.A., Schlautman, B., Sheaffer, C.C., Smith, K.P., Speranza, P.R., Turner, M.K., Vilela, A.E., von Gehren, P., Weaver, C. 2017. Accelerating Silphium domestication: an opportunity to develop new crop ideotypes and breeding strategies informed by multiple disciplines. Crop Science. 57(3):1274-1284.
Bee visitation rates to cultivated sunflowers increase with the amount and accessibility of nectar sugars - (Peer Reviewed Journal)
Mallinger, R.E., Prasifka, J.R. 2017. Bee visitation rates to cultivated sunflowers increase with the amount and accessibility of nectar sugars. Journal of Applied Entomology. 141(7):561-573.
Effects from early planting of late-maturing sunflowers on damage from primary insect pests in the United States - (Peer Reviewed Journal)
Prasifka, J.R., Marek, L., Lee, D., Thapa, S., Hahn, V., Bradshaw, J. 2016. Effects from early planting of late-maturing sunflowers on damage from primary insect pests in the United States. Helia. 39(63):45-56.
Relative susceptibility of sunflower maintainer lines and resistance sources to natural infestations of the banded sunflower moth (Lepidoptera: Tortricidae) - (Peer Reviewed Journal)
Prasifka, J.R., Hulke, B.S. 2016. Relative susceptibility of sunflower maintainer lines and resistance sources to natural infestations of the banded sunflower moth (Lepidoptera: Tortricidae). The Canadian Entomologist. 148:736-741.
Efficacy of insecticides to limit caterpillar damage to prairie cordgrass seed - (Peer Reviewed Journal)
Prasifka, J.R., Prasifka, P.L., Lee, D.K. 2016. Efficacy of insecticides to limit caterpillar damage to prairie cordgrass seed. Arthropod Management Tests. 41(1):tsw030. doi:10.1093/amt/tsw030.
Susceptibility of sunflower inbreds to Melanagromyza minimoides in Argentina and potential association with plant resistance traits - (Peer Reviewed Journal)
Prasifka, J.R., Bazzalo, M.E. 2016. Susceptibility of sunflower inbreds to Melanagromyza minimoides in Argentina and potential association with plant resistance traits. International Journal of Pest Management. 62(2):105-110.
Sunflower insect pests - (Book / Chapter)
Bradshaw, J.D., Prasifka, J.R., Knodel, J.J. and Michaud, J.P. 2016. Insect Pests. In: Harveson, R.M., Markell, S.G., Block, C.C., Gulya, T.J. editors. Compendium of Sunflower Diseases and Pests. St. Paul, MN: APS Press. pp.85-106.
Non-constant thermal regimes enhance overwintering success and accelerate diapause development for Smicronyx fulvus (Coleoptera: Curculionidae) - (Peer Reviewed Journal)
Prasifka, J.R., Rinehart, J.P., Yocum, G.D. 2015. Nonconstant thermal regimes enhance overwintering success and accelerate diapause development for Smicronyx fulvus (Coleoptera: Curculionidae). Journal of Economic Entomology. 108(4):1804-1809. doi:10.1093/jee/tov173.
Sesquiterpene lactone composition of wild and cultivated sunflowers and biological activity against an insect pest - (Peer Reviewed Journal)
Prasifka, J.R., Spring, O., Conrad, J., Cook, L.W., Palmquist, D.E., Foley, M.E. 2015. Sesquiterpene lactone composition of wild and cultivated sunflowers and biological activity against an insect pest. Journal of Agricultural and Food Chemistry. 63(16):4042-4049. doi:10.1021/acx.jafc.5b00362.
Rhizopus oryzae associated with Melanagromyza splendida and stem disease of sunflowers (Helianthus annuus) in California - (Peer Reviewed Journal)
Mathew, F.M., Prasifka, J.R., Gaimari, S.D., Shi, L., Markel, S.G., Gulya, T.J. 2015. Rhizopus oryzae associated with Melanagromyza splendida and stem disease of sunflowers (Helianthus annuus) in California. Plant Health Progress. 16(1):39-42. DOI:10.1094/PHP-RS-14-0042.
Larval mortality and development for rotation-resistant and rotation-susceptible populations of the western corn rootworm on Bt corn - (Peer Reviewed Journal)
Tinsley, N.A., Spencer, J.L., Estes, R.E., Prasifka, J.R., Schrader, P.M., French, B.W., Gray, M.E. 2015. Larval mortality and development for rotation-resistant and rotation-susceptible populations of the western corn rootworm on Bt corn. Journal of Applied Entomology. 139:46-54.
Variation in the number of capitate glandular trichomes in wild and cultivated sunflower germplasm and potential for use in host plant resistance - (Peer Reviewed Journal)
Prasifka, J.R. 2015. Variation in the number of capitate glandular trichomes in wild and cultivated sunflower germplasm and potential for use in host plant resistance. Plant Genetic Resources. 13:68-74.
Pericarp strength of sunflower and its value for plant defense against the sunflower moth, Homoeosoma electellum - (Peer Reviewed Journal)
Prasifka, J.R., Hulke, B.S., Seiler, G.J. 2014. Pericarp strength of sunflower and its value for plant defense against the sunflower moth, Homoeosoma electellum. Arthropod-Plant Interactions. 8:101-107.
Automated detection of insect-damaged sunflower seeds by X-ray imaging - (Peer Reviewed Journal)
Pearson, T.C., Prasifka, J.R., Brabec, D.L., Haff, R.P., Hulke, B.S. 2014. Automated detection of insect-damaged sunflower seeds by X-ray imaging. Applied Engineering in Agriculture. 30(1):125-131.
Sunflower insect pests - (Book / Chapter)
Prasifka, J.R. 2015. Sunflower insect pests. In: Foce, E.M., Dunford, N. and Salas, J.J. (eds.). Sunflower: Chemistry, Production, Processing, and Utilization. American Oil Chemists’ Society Press, Urbana, Illinois. pp 157-174.
Methods for assessing infestations of sunflower stem weevil (Coleoptera: Curculionidae) in sunflower stems - (Peer Reviewed Journal)
Prasifka, J.R., Campbell, J.F., Aiken, R.M., Bradshaw, J.D. 2014. Methods for assessing infestations of sunflower stem weevil (Coleoptera: Curculionidae) in sunflower stems. The Canadian Entomologist. 146(4): 465-469.
Transmission of Switchgrass mosaic virus by Graminella aureovitatta - (Peer Reviewed Journal)
Agindotan, B.O., Prasifka, J.R., Gray, M.E., Dietrich, C.H., Bradley, C.A. 2013. Transmission of Switchgrass mosaic virus by Graminella aureovitatta. Canadian Journal of Plant Pathology. 35(3):384-389.
Adult activity and oviposition of corn rootworms, Diabrotica spp. (Coleoptera: Chrysomelidae), in Miscanthus, corn, and switchgrass - (Peer Reviewed Journal)
Prasifka, J.R., Spencer, J.L., Tinsley, N.A., Estes, R.E., Gray, M.E. 2013. Adult activity and oviposition of corn rootworms, Diabrotica spp. (Coleoptera: Chrysomelidae), in Miscanthus, corn, and switchgrass. Journal of Applied Entomology. 137(7):481-487.
Current status and future perspectives on sunflower insect pests - (Proceedings)
Prasifka, J.R., Hulke, B.S. 2012. Current status and future perspectives on sunflower insect pests. In: 18th International Sunflower Conference Program and Abstracts, Mar del Plata & Barcarce, Argentina, February 27-March 1, 2012. P.41.
Research needs and potential effects of biomass crops on pest management - (Peer Reviewed Journal)
Prasifka, J.R., Gray, M.E. 2012. Research needs and potential effects of biomass crops on pest management. Journal of Integrated Pest Management. 3(4):C1-C5.
Potential biomass reductions to Miscanthus × giganteus by stem-boring caterpillars - (Peer Reviewed Journal)
Prasifka, J.R., Bradshaw, J.D., Gray, M.E. 2012. Potential biomass reductions to Miscanthus × giganteus by stem-boring caterpillars. Environmental Entomology. 41(4):865-871.
Establishment and host effects of cereal aphids on switchgrass (Panicum virgatum L.) cultivars - (Peer Reviewed Journal)
Burd, J.D., Prasifka, J.R., Bradshaw, J.D. 2012. Establishment and host effects of cereal aphids on switchgrass (Panicum virgatum L.) cultivars. Southwestern Entomologist. 37(2):115-122.
Modeling the impact of cross-pollination and low toxin expression in corn kernels on adaptation of European corn borer (Lepidoptera: Crambidae) to transgenic insecticidal corn - (Peer Reviewed Journal)
Kang, J., Onstad, D.W., Hellmich II, R.L., Moser, S.E., Hutchison, W.D., Prasifka, J.R. 2012. Modeling the impact of cross-pollination and low toxin expression in corn kernels on adaptation of European corn borer (Lepidoptera: Crambidae) to transgenic insecticidal corn. Environmental Entomology. 41(1):200-211.
Bacillus thuringiensis Resistance Influences European Corn Borer (Lepidoptera: Crambidae) Larval Behavior after Exposure to Cry1Ab - (Peer Reviewed Journal)
Prasifka, J.R., Hellmich II, R.L., Sumerford, D.V., Siegfried, B.D. 2009. Bacillus thuringiensis Resistance Influences European Corn Borer (Lepidoptera: Crambidae) Larval Behavior after Exposure to Cry1Ab. Journal of Economic Entomology. 102(2):781-787.
Nosema pyrausta: Its Biology, History, and Potential Role in a Landscape of Transgenic Insecticidal Crops - (Peer Reviewed Journal)
Lewis, L.C., Bruck, D.J., Prasifka, J.R., Raun, E.S. 2009. Nosema pyrausta: Its Biology, History, and Potential Role in a Landscape of Transgenic Insecticidal Crops. Biological Control. 48(3):223-231.
Overexpression of Drosophila juvenile hormone esterase binding protein results in anti-JH effects and reduced pheromone abundance - (Peer Reviewed Journal)
Zhiyan, L., Li, X., Prasifka, J.R., Jurenka, R., Bonning, B.C. 2008. Overexpression of Drosophila juvenile hormone esterase binding protein results in anti-JH effects and reduced pheromone abundance. General and Comparative Endocrinology. 156:164-172.
Selection of Nontarget Arthropod Taxa for Field Research on Transgenic Insecticidal Crops: Using Empirical Data and Statistical Power - (Peer Reviewed Journal)
Prasifka, J.R., Hellmich II, R.L., Dively, G.P., Higgins, L.S., Dixon, P.M., Duan, J.J. 2008. Selection of Nontarget Arthropod Taxa for Field Research on Transgenic Insecticidal Crops: Using Empirical Data and Statistical Power. Environmental Entomology. 37(1):1-10.
Effects of Transgenic Bacillus thuringienses Corn and Permethrin on Nontarget Arthropods - (Peer Reviewed Journal)
Bruck, D.J., Lopez, M.D., Lewis, L.C., Prasifka, J.R., Gunnarson, R.D. 2007. Effects of tansgenic Bacillus thuringienses corn and permethrin on nontarget arthropods. Journal of Agricultural and Urban Entomology. 23(3):111-124.
Effects of Insecticide Exposure on Movement and Population Size Estimates of Predatory Ground Beetles (Coleoptera: Carabidae) - (Peer Reviewed Journal)
Prasifka, J.R., Lopez, M.D., Hellmich II, R.L., Prasifka, P.L. 2007. Effects of Insecticide Exposure on Movement and Population Size Estimates of Predatory Ground Beetles (Coleoptera: Carabidae). Pest Management Science. 64:30-36.
COMPARISON OF PITFALL TRAPS AND LITTER BAGS FOR SAMPLING GROUND-DWELLING ARTHROPODS - (Peer Reviewed Journal)
Prasifka, J.R., Lopez, M.D., Hellmich II, R.L., Lewis, L.C., Dively, G.P. 2007. Comparison of pitfall traps and litter bags for sampling ground-dwelling arthropods. Journal of Applied Entomology. 131:115-120.
Rubidium marking to detect pest and predator dispersal from corn into sorghum and cotton in Georgia - (Peer Reviewed Journal)
Tillman, P.G., Prasifka, J.R., Heniz, K.M. 2007. Rubidium marking to detect dispersal of pest and predator from corn into sorghum and cotton in Georgia. Journal of Entomological Science. 42(3): 383-391.
Effects of Cry1Ab-Expressing Corn Anthers on the Movement of Monarch Butterfly Larvae - (Peer Reviewed Journal)
Prasifka, P.L., Hellmich II, R.L., Prasifka, J.R., Lewis, L.C. 2007. Effects of Cry1Ab-Expressing Corn Anthers on the Movement of Monarch Butterfly Larvae. Environmental Entomology. 36(1):228-233.
SAMPLING EUROPEAN CORN BORER (LEPIDOPTERA: CRAMBIDAE) LARVAE FROM SEED CORN DRYING BINS FOR BT RESISTANCE MONITORING - (Peer Reviewed Journal)
Prasifka, J.R., Sumerford, D.V., Hellmich II, R.L., Lewis, L.C., Calvin, D.D. 2006. Sampling European Corn Borer (Lepidoptera: Crambidae) Larvae from Seed Corn Drying Bins for Bt Resistance Monitoring. Southwestern Entomologist. 31(4):269-279.
EFFECTS OF LIVING MULCHES ON PREDATOR ABUNDANCE AND SENTINEL PREY IN A CORN-SOYBEAN-FORAGE ROTATION - (Peer Reviewed Journal)
Prasifka, J.R., Schmidt, N.P., Kohler, K.A., O'Neal, M.E., Hellmich II, R.L., Singer, J.W. 2006. Effects of living mulches on predator abundance and sentinel prey in a corn-soybean-forage rotation. Environmental Entomology. 35(5):1423-1431.
ASSESSING CARABIDS CONTRIBUTION TO ECOSYSTEM SERVICES: DOES IT MATTER IF THERE ARE MORE BEETLES? - (Peer Reviewed Journal)
O'Neal, M.E., Prasifka, J.R., Schmidt, N.P., Singer, J.W., Hellmich II, R.L., Kohler, K.A. 2006. Assessing carabids contribution to ecosystem services: Does it matter if there are more beetles? American Entomologist. 51:231-233.
A FRAMEWORK FOR EVALUATING POSSIBLE NON-TARGET EFFECTS OF TRANSGENIC CORN IN THE UNITED STATES: STANDARDIZING LABORATORY TESTS - (Proceedings)
EFFECTS ON FITNESS AND BEHAVIOR OF MONARCH BUTTERFLY LARVAE EXPOSED TO A COMBINATION OF CRY1AB-EXPRESSING CORN ANTHERS AND POLLEN - (Peer Reviewed Journal)
Anderson, P.L., Hellmich II, R.L., Prasifka, J.R., Lewis, L.C. 2005. Effects on fitness and behavior of monarch butterfly larvae exposed to a combination of Cry1ab-expressing corn anthers and pollen. Environmental Entomology. 34:944-952.
UTILITY OF GROUND BEETLE SPECIES IN FIELD TESTS OF POTENTIAL NON-TARGET EFFECTS OF BT CROPS - (Peer Reviewed Journal)
Lopez, M.D., Prasifka, J.R., Bruck, D.J., Lewis, L.C. 2005. Utility of ground beetle species in field tests of potential non-target effects of Bt crops. Environmental Entomology. 34(5):1317-1324.
ASSESSING THE EFFECTS OF PEST MANAGEMENT ON NON-TARGET ARTHROPODS: THE INFLUENCE OF PLOT SIZE AND ISOLATION - (Peer Reviewed Journal)
Prasifka, J.R., Hellmich II, R.L., Dively, G.P., Lewis, L.C. 2005. Assessing the effects of pest management on non-target arthropods: the influence of plot size and isolation. Environmental Entomology. 34:1181-1192.
ASSESSING GROUND BEETLE CONTRIBUTION TO ECOSYSTEM SERVICES: DOES IT MATTER IF THERE ARE MORE GROUND BEETLES? - (Abstract Only)
O'Neal, M.E., Singer, J.W., Schmidt, N., Prasifka, J.R., Hellmich II, R.L. 2005. Assessing ground beetle contribution to ecosystem services: does it matter if there are more ground beetles?. [abstract]. NCB-ESA North Central Branch Entomological Society of America. Paper No. 102.
THE EFFECT OF PERENNIAL COVER CROPS ON NATURAL ENEMY COMMUNITIES IN CORN AND SOYBEAN - (Abstract Only)
Schmidt, N., Oneal, M., Singer, J.W., Kohler, K.A., Prasifka, J.R., Hellmich Ii, R.L. 2004. The effect of perennial cover crops on natural enemy communities in corn and soybean [abstract]. Entomological Society of America Annual Meeting. Poster No. D0081.
DEVELOPING GUIDELINES FOR MONITORING NON-TARGET EFFECTS OF BT CROPS - (Proceedings)
CHALLENGES FOR FIELD RESEARCH ON NON-TARGET EFFECTS OF BT CROPS - (Abstract Only)
EFFECTS OF BT PLANTS ON NON-TARGET HERBIVORES - (Book / Chapter)
Hellmich II, R.L., Prasifka, J.R., Anderson, P.L. 2004. Effects of Bt plants on non-target herbivores. In: van Emden, H.F., Gray, A.J., editors. GM Crops-Ecological Dimensions. Wellesbourne, Warwick, UK: Association of Applied Biologists. p. 75-80.