Publications
Peer-reviewed Publications
Jha, P. K., N. Zhang, J.P. Rijal, L. E. Parker, S. Ostoja, and T. B. Pathak. 2024. Climate change impacts on insect pests for high value specialty crops in California. Science of The Total Environment, 906, 167605. https://doi.org/10.1016/j.scitotenv.2023.167605J
Rijal, J.P., and S. Gyawaly. (in press). Efficacy and persistence of the entomopathogenic fungi and nematodes on walnut husk fly. Acta Horticulturae.
Rijal, J.P., R. Bansal., and S. Gyawaly. (in press). Edge effects of invasive brown marmorated stink bug, Halyomorpha halys, infestation and damage in almond orchards. Acta Horticulturae.
Gyawaly, S. and J. P. Rijal (in press). Understanding seasonal biology and exploring detection tools for Pacific flatheaded borer in walnut orchards in California. Acta Horticulturae.
Gyawaly, S., and J.P. Rijal. (in press). Effect of winter flooding on navel orangeworm and spider mite infestation in almond orchard. Acta Horticulturae.
Van Steenwyk, R., S. S. Walse, D. Kuzmich, M. R. Thayer, and J. P. Rijal (in press). Preliminary findings on the improved monitoring of walnut husk fly (Rhagoletis completa) through a new pheromone lure. Acta Horticulturae.
Gyawaly, S., and J. P. Rijal. 2022. Neem-Based Insecticides Deter Oviposition Activity in Spotted Wing Drosophila (Diptera: Drosophilidae) in Sweet Cherries. Journal of Economic Entomology. May 2022. https://doi.org/10.1093/jee/toac074
Rijal, J.P. 2022. Spotted Wing Drosophila UCIPM Guidelines. In: Grant, J.A., J.L. Caprile, W.W. Coates, R.A. Van Steenwyk, K.M. Daane. and J.P. Rijal (Revised continuously). UC IPM Pest Management Guidelines: Cherry. Publication 3440, University of California Agriculture and Natural Resources. Oakland, CA. https://ipm.ucanr.edu/agriculture/cherry/spotted-wing-drosophila/#IMPORTANT
Illán, Javier Gutiérrez, et al. 2022. Evaluating invasion risk and population dynamics of the brown marmorated stink bug across the contiguous United States." Pest management science (2022). (link)
Nepal, A., DeShields, J. B., Levin, A. D., Hilton, R., & J. P. Rijal. 2022. Epidemiology of Grapevine Red Blotch Disease Progression in Southern Oregon Vineyards. American Journal of Enology and Viticulture, 73 (2), 116-124. https://www.ajevonline.org/content/73/2/116.
Rijal, J.P., A.L. Joyce, and S. Gyawaly. 2021. Biology, Ecology, and Management of Hemipteran Pests in Almonds Orchard Systems in the United States. Journal of Integrated Pest Management 12.1; 24. https://doi.org/10.1093/jipm/pmab018
Gireesh, M., J.P. Rijal, and S.V. Joseph. 2021.Spatial Distribution of Hunting Billbugs (Coleoptera: Curculionidae) in Sod Farms. Insects 2021, 12(5), 402; https://doi.org/10.3390/insects12050402
Gyawaly, S., J.P. Rijal, and S.V. Joseph. 2021. Bagrada hilaris (Bagrada bug or Painted Bug). https://www.cabi.org/isc/datasheet/8302. In: CABI Invasive Species Compendium. CAB International.
Haviland, D.R., J.P. Rijal, S. M. Rill, B. S. Higbee, C. S. Burks, and C. A. Gordon. 2021. Management of Navel Orangeworm (Lepidoptera: Pyralidae) Using Four Commercial Mating Disruption Systems in California Almonds. Journal of Economic Entomology. https://doi.org/10.1093/jee/toaa297
Fisher, J.J, J. P. Rijal, and F. G. Zalom. 2020. Temperature and humidity interact to influence brown marmorated stink bug (Hemiptera: Pentatomidae), survival. Environmental Entomology. https://doi.org/10.1093/ee/nvaa146
Pathak, T.B., J. P. Rijal, and M. Maskey. 2021. Impact of Climate Change on Navel Orangeworm, a Major Pest of Tree Nuts in California. Science of the Total Environment. https://doi.org/10.1016/j.scitotenv.2020.142657
Shrestha*, G., J. P. Rijal*, and G.V.P. Reddy. 2020. Characterization of the spatial distribution of alfalfa weevil, Hypera postica, and its natural enemies, using geospatial models. Journal of Pest Management. https://doi.org/10.1002/ps.6100.
(* = equal contribution).
Joseph, S. V., and J. P. Rijal. 2019. Walking capacity of Lygus hesperus fifth instars in the laboratory and outdoors. Southwestern Entomologist 44(2): 403-408. https://doi.org/10.3958/059.044.0205
Rijal, J. P., A. Medina, R. Duncan, J. Fisher, and F. Zalom. 2019. Monitoring and abundance of brown marmorated stink bug in peach and almond orchards in the northern San Joaquin Valley. Proceedings of California Plant and Soil Conference, American Society of Agronomy-California Chapter, 5-6 February, 2019. pp 81-86. (pdf)
Rijal, J. P., and S. Gyawaly. 2018. Characterizing brown marmorated stink bug injury in almond, a new host crop in California. Insects. 9(4), 126. https://doi.org/10.3390/insects9040126.
Baspinar, H., D. Doll, and J. P. Rijal. 2018. Pest management in organic almonds. In: The Handbook of pest Management in organic farming (Eds. Vincenzo Vacante and Serge Kreiter). pp. 328-347. (Full text pdf)
Rijal, J.P., R. Regmi, R. Ghimire, K.D. Puri, S. Gyawaly, S. Poudel. 2018. Farmers’ knowledge on pesticide safety and pest management practices: a case study of vegetable growers in Chitwan, Nepal. Agriculture. 8, 16. (Full text pdf)
Rijal, J. P. and L. D. Godfrey. 2018. Efficacy of selected bio-and reduced risk insecticides on mint root borer. Arth. Manag. Tests (Editor-reviewed). 43(1), 1 January 2018, tsx134. https://doi.org/10.1093/amt/tsx134
Rijal, J. P. and R. Duncan. 2017. First report of an established brown marmorated stink bug (Hemiptera: Pentatomidae) population in California agricultural crops. J. Entomol. Sci. 52 (4): 450-454. (Full text pdf)
Rijal, J.P. and J. C. Bergh. 2017. Grape Root Borer (Lepidoptera: Sesiidae): An Economic Pest of Commercial Vineyards in the Eastern United States. J. Integr. Pest Manag. https://doi.org/10.1093/jipm/pmx027 (pdf)
Rijal, J.P., R. Wilson, and L.D. Godfrey. 2016. Characterization of spatial distribution of Tetranychus urticae in peppermint in California and implication for improving sampling plan. Exp. Appl. Acarol. 68: 155-171. (Full text pdf) http://dx.doi.org/10.1007/s10493-015-0006-1.
Rijal, J.P. and J. C. Bergh. 2015. Food-finding capability of grape root borer (Lepidoptera: Sesiidae) neonates in soil column bioassays. J. Entomol. Sci. (Full Text pdf).
Rijal, J. P., C. C. Brewster, and J. C. Bergh. 2014. Effects of biotic and abiotic factors on grape root borer (Lepidoptera: Sesiidae) infestations in commercial vineyards in Virginia. Environ. Entomol. 43: 1198-1208. (Full text pdf)
Rijal, J. P., C. Brewster and J. C. Bergh. 2014.Spatial distribution of grape root borer (Lepidoptera: Sesiidae) infestations in Virginia vineyards and implications for sampling. Environ. Entomol. 43: 716-728. (Full text pdf, Abstract)
Rijal, J. P., A. Zhang and J. C. Bergh. 2013. Behavioral response of grape root borer (Lepidoptera: Sesiidae) neonates to grape root volatiles. Environ. Entomol. 42: 1338-1347. (Full text pdf) http://dx.doi.org/10.1603/EN13088.
Subedi, S., Y.D.GC, R.B. Thapa and J.P. Rijal. 2009. Rice weevil (Sitophilus oryzae L.) host preference of selected stored grains in Chitwan Nepal. J. Inst. Agric. Anim. Sci. 30: 151-158. (Full text pdf, Abstract)
Rijal, J.P., Y.D. GC, R. B. Thapa and L.N. Kafle. 2008. Virulence of native isolates of Metarhizium anisopliae and Beauveria bassiana against Helicoverpa armigera in Nepal. Formosan Entomol. 28 (1): 21-29. (Full text pdf, Abstract)
Rijal, J.P., Y.D. GC, R. B. Thapa and L.N. Kafle. 2008. Comparative efficacy of insect pathogenic fungi (Metarhizium anisopliae and Beauveria bassiana) to Helicoverpa armigera in chickpea under field condition of Nepal. Formosan Entomol. 28(4) : 249-258. (Full text pdf, Abstract)
Rijal, J.P., Y.D. G.C. and R. B. Thapa. 2008. Yield loss assessment and monitoring of Helicoverpa armigera Hubner in chickpea under Chitwan condition. Journal of Plant Protection Society, Plant Protection Society Nepal. 1: 90-98.
Rawat, P.R., Y.D. G.C., R. B. Thapa and J.P. Rijal. 2008. Evaluation of entomopathogenic fungi with other pesticides against mustard aphid, Lipaphis erysimi (Kalt.) under field condition of Chitwan, Nepal. Proceedings of Workshop of Plant Protection Society of Nepal. 25-26 July, 2008, Kathmandu, Nepal.
Rijal, J.P., Y.D. GC, R. B. Thapa and S. M. Shrestha. 2007. Monitoring and Laboratory evaluation of native isolates of entomogenous fungi against chickpea pod borer (Helicoverpa armigera Hubner). IAAS Research Adv., Institute of Agriculture and Animal Science, Nepal. 2:89-94.
Rijal, J.P., R.K. Malla, S. Tiwari, P.R. Rawat and Y.D. GC. 2006. A preliminary study on the practices of insect pest management at Sukranagar VDC, Chitwan. In: G.K. KC, S. Pokhrel, N.S. Upadhaya, S.P. Marahatta, B.D. Bhandari (eds.). Proceedings of Workshop of Plant Protection Society of Nepal. 25-26 August, 2006, Kathmandu, Nepal. pp 297-307.
Jha, P. K., N. Zhang, J.P. Rijal, L. E. Parker, S. Ostoja, and T. B. Pathak. 2024. Climate change impacts on insect pests for high value specialty crops in California. Science of The Total Environment, 906, 167605. https://doi.org/10.1016/j.scitotenv.2023.167605J
Rijal, J.P., and S. Gyawaly. (in press). Efficacy and persistence of the entomopathogenic fungi and nematodes on walnut husk fly. Acta Horticulturae.
Rijal, J.P., R. Bansal., and S. Gyawaly. (in press). Edge effects of invasive brown marmorated stink bug, Halyomorpha halys, infestation and damage in almond orchards. Acta Horticulturae.
Gyawaly, S. and J. P. Rijal (in press). Understanding seasonal biology and exploring detection tools for Pacific flatheaded borer in walnut orchards in California. Acta Horticulturae.
Gyawaly, S., and J.P. Rijal. (in press). Effect of winter flooding on navel orangeworm and spider mite infestation in almond orchard. Acta Horticulturae.
Van Steenwyk, R., S. S. Walse, D. Kuzmich, M. R. Thayer, and J. P. Rijal (in press). Preliminary findings on the improved monitoring of walnut husk fly (Rhagoletis completa) through a new pheromone lure. Acta Horticulturae.
Gyawaly, S., and J. P. Rijal. 2022. Neem-Based Insecticides Deter Oviposition Activity in Spotted Wing Drosophila (Diptera: Drosophilidae) in Sweet Cherries. Journal of Economic Entomology. May 2022. https://doi.org/10.1093/jee/toac074
Rijal, J.P. 2022. Spotted Wing Drosophila UCIPM Guidelines. In: Grant, J.A., J.L. Caprile, W.W. Coates, R.A. Van Steenwyk, K.M. Daane. and J.P. Rijal (Revised continuously). UC IPM Pest Management Guidelines: Cherry. Publication 3440, University of California Agriculture and Natural Resources. Oakland, CA. https://ipm.ucanr.edu/agriculture/cherry/spotted-wing-drosophila/#IMPORTANT
Illán, Javier Gutiérrez, et al. 2022. Evaluating invasion risk and population dynamics of the brown marmorated stink bug across the contiguous United States." Pest management science (2022). (link)
Nepal, A., DeShields, J. B., Levin, A. D., Hilton, R., & J. P. Rijal. 2022. Epidemiology of Grapevine Red Blotch Disease Progression in Southern Oregon Vineyards. American Journal of Enology and Viticulture, 73 (2), 116-124. https://www.ajevonline.org/content/73/2/116.
Rijal, J.P., A.L. Joyce, and S. Gyawaly. 2021. Biology, Ecology, and Management of Hemipteran Pests in Almonds Orchard Systems in the United States. Journal of Integrated Pest Management 12.1; 24. https://doi.org/10.1093/jipm/pmab018
Gireesh, M., J.P. Rijal, and S.V. Joseph. 2021.Spatial Distribution of Hunting Billbugs (Coleoptera: Curculionidae) in Sod Farms. Insects 2021, 12(5), 402; https://doi.org/10.3390/insects12050402
Gyawaly, S., J.P. Rijal, and S.V. Joseph. 2021. Bagrada hilaris (Bagrada bug or Painted Bug). https://www.cabi.org/isc/datasheet/8302. In: CABI Invasive Species Compendium. CAB International.
Haviland, D.R., J.P. Rijal, S. M. Rill, B. S. Higbee, C. S. Burks, and C. A. Gordon. 2021. Management of Navel Orangeworm (Lepidoptera: Pyralidae) Using Four Commercial Mating Disruption Systems in California Almonds. Journal of Economic Entomology. https://doi.org/10.1093/jee/toaa297
Fisher, J.J, J. P. Rijal, and F. G. Zalom. 2020. Temperature and humidity interact to influence brown marmorated stink bug (Hemiptera: Pentatomidae), survival. Environmental Entomology. https://doi.org/10.1093/ee/nvaa146
Pathak, T.B., J. P. Rijal, and M. Maskey. 2021. Impact of Climate Change on Navel Orangeworm, a Major Pest of Tree Nuts in California. Science of the Total Environment. https://doi.org/10.1016/j.scitotenv.2020.142657
Shrestha*, G., J. P. Rijal*, and G.V.P. Reddy. 2020. Characterization of the spatial distribution of alfalfa weevil, Hypera postica, and its natural enemies, using geospatial models. Journal of Pest Management. https://doi.org/10.1002/ps.6100.
(* = equal contribution).
Joseph, S. V., and J. P. Rijal. 2019. Walking capacity of Lygus hesperus fifth instars in the laboratory and outdoors. Southwestern Entomologist 44(2): 403-408. https://doi.org/10.3958/059.044.0205
Rijal, J. P., A. Medina, R. Duncan, J. Fisher, and F. Zalom. 2019. Monitoring and abundance of brown marmorated stink bug in peach and almond orchards in the northern San Joaquin Valley. Proceedings of California Plant and Soil Conference, American Society of Agronomy-California Chapter, 5-6 February, 2019. pp 81-86. (pdf)
Rijal, J. P., and S. Gyawaly. 2018. Characterizing brown marmorated stink bug injury in almond, a new host crop in California. Insects. 9(4), 126. https://doi.org/10.3390/insects9040126.
Baspinar, H., D. Doll, and J. P. Rijal. 2018. Pest management in organic almonds. In: The Handbook of pest Management in organic farming (Eds. Vincenzo Vacante and Serge Kreiter). pp. 328-347. (Full text pdf)
Rijal, J.P., R. Regmi, R. Ghimire, K.D. Puri, S. Gyawaly, S. Poudel. 2018. Farmers’ knowledge on pesticide safety and pest management practices: a case study of vegetable growers in Chitwan, Nepal. Agriculture. 8, 16. (Full text pdf)
Rijal, J. P. and L. D. Godfrey. 2018. Efficacy of selected bio-and reduced risk insecticides on mint root borer. Arth. Manag. Tests (Editor-reviewed). 43(1), 1 January 2018, tsx134. https://doi.org/10.1093/amt/tsx134
Rijal, J. P. and R. Duncan. 2017. First report of an established brown marmorated stink bug (Hemiptera: Pentatomidae) population in California agricultural crops. J. Entomol. Sci. 52 (4): 450-454. (Full text pdf)
Rijal, J.P. and J. C. Bergh. 2017. Grape Root Borer (Lepidoptera: Sesiidae): An Economic Pest of Commercial Vineyards in the Eastern United States. J. Integr. Pest Manag. https://doi.org/10.1093/jipm/pmx027 (pdf)
Rijal, J.P., R. Wilson, and L.D. Godfrey. 2016. Characterization of spatial distribution of Tetranychus urticae in peppermint in California and implication for improving sampling plan. Exp. Appl. Acarol. 68: 155-171. (Full text pdf) http://dx.doi.org/10.1007/s10493-015-0006-1.
Rijal, J.P. and J. C. Bergh. 2015. Food-finding capability of grape root borer (Lepidoptera: Sesiidae) neonates in soil column bioassays. J. Entomol. Sci. (Full Text pdf).
Rijal, J. P., C. C. Brewster, and J. C. Bergh. 2014. Effects of biotic and abiotic factors on grape root borer (Lepidoptera: Sesiidae) infestations in commercial vineyards in Virginia. Environ. Entomol. 43: 1198-1208. (Full text pdf)
Rijal, J. P., C. Brewster and J. C. Bergh. 2014.Spatial distribution of grape root borer (Lepidoptera: Sesiidae) infestations in Virginia vineyards and implications for sampling. Environ. Entomol. 43: 716-728. (Full text pdf, Abstract)
Rijal, J. P., A. Zhang and J. C. Bergh. 2013. Behavioral response of grape root borer (Lepidoptera: Sesiidae) neonates to grape root volatiles. Environ. Entomol. 42: 1338-1347. (Full text pdf) http://dx.doi.org/10.1603/EN13088.
Subedi, S., Y.D.GC, R.B. Thapa and J.P. Rijal. 2009. Rice weevil (Sitophilus oryzae L.) host preference of selected stored grains in Chitwan Nepal. J. Inst. Agric. Anim. Sci. 30: 151-158. (Full text pdf, Abstract)
Rijal, J.P., Y.D. GC, R. B. Thapa and L.N. Kafle. 2008. Virulence of native isolates of Metarhizium anisopliae and Beauveria bassiana against Helicoverpa armigera in Nepal. Formosan Entomol. 28 (1): 21-29. (Full text pdf, Abstract)
Rijal, J.P., Y.D. GC, R. B. Thapa and L.N. Kafle. 2008. Comparative efficacy of insect pathogenic fungi (Metarhizium anisopliae and Beauveria bassiana) to Helicoverpa armigera in chickpea under field condition of Nepal. Formosan Entomol. 28(4) : 249-258. (Full text pdf, Abstract)
Rijal, J.P., Y.D. G.C. and R. B. Thapa. 2008. Yield loss assessment and monitoring of Helicoverpa armigera Hubner in chickpea under Chitwan condition. Journal of Plant Protection Society, Plant Protection Society Nepal. 1: 90-98.
Rawat, P.R., Y.D. G.C., R. B. Thapa and J.P. Rijal. 2008. Evaluation of entomopathogenic fungi with other pesticides against mustard aphid, Lipaphis erysimi (Kalt.) under field condition of Chitwan, Nepal. Proceedings of Workshop of Plant Protection Society of Nepal. 25-26 July, 2008, Kathmandu, Nepal.
Rijal, J.P., Y.D. GC, R. B. Thapa and S. M. Shrestha. 2007. Monitoring and Laboratory evaluation of native isolates of entomogenous fungi against chickpea pod borer (Helicoverpa armigera Hubner). IAAS Research Adv., Institute of Agriculture and Animal Science, Nepal. 2:89-94.
Rijal, J.P., R.K. Malla, S. Tiwari, P.R. Rawat and Y.D. GC. 2006. A preliminary study on the practices of insect pest management at Sukranagar VDC, Chitwan. In: G.K. KC, S. Pokhrel, N.S. Upadhaya, S.P. Marahatta, B.D. Bhandari (eds.). Proceedings of Workshop of Plant Protection Society of Nepal. 25-26 August, 2006, Kathmandu, Nepal. pp 297-307.
