Hero Image

James A Bethke

Farm Advisor - Emeritus
Cooperative Extension
9335 Hazard Way
Suite 201
San Diego, CA 92123
951-775-7172
jabethke@ucanr.edu Create VCard

Education

M.S. Entomology, UC Riverside. 1985

Specialty

Nurseries and Floriculture

Areas of Expertise (click to see all ANR academics with this expertise)

Bibliography

Peer Reviewed

  • Lara J., C. Pickett, C. Ingels, D. R. Haviland, E. Grafton-Cardwell, D. Doll, J. Bethke, B. Faber, S. K. Daraand M. Hoddle. 2013. Biological control program is being developed for brown marmorated stink bug. California Agriculture 70(1): 15-23

  • Byrne, F. J., M. P. Daugherty, E. E. Grafton-Cardwell, J. A. Bethke and J. G. Morse. 2016. Evaluation of systemic neonicotinoid insecticides for the management of the Asian citrus psyllid Diaphorina citri on containerized citrus. Pest Management Science. (accepted Oct 7, 2016, published online Dec 2016; DOI10.1002/ps.4451

  • Morse, J.G., E. Grafton-Cardwell, F. Byrne, and J. Bethke. 2016. Monitoring for ACP Resistance to Pesticides - Baseline Levels Established for 12 Pesticides. Citrograph, Winter 2016 7(1): 34-39

  • Morse, J.G., R. Hofshi, J.A. Bethke, F.J. Byrne, and K.E. Godfrey. 2016. Susceptibility of Avocado Rootstocks to Diaprepes Root Weevil. California Avocado Society Yearbook.  California Avocado Society 2014 Yearbook 97: 122-141 

  • Villavicencio, L. E., J. A. Bethke, and L. Corkidi. 2015. Effect of Uniconazole on the Control of Height and Fruit Yield of Potted Tomato, Pepper and Eggplant. HortTechnology 25(4): 1-6

  • Bethke, J. A., S. H Driestadt and L. G. Varela. 2014. Pest Note: Thrips Oakland: Univ. Calif. Div. Agric. Nat. Res. Publ. 7429 

  • Bethke, J. A., M. Whitehead, J. Morse, F. Byrne, E. Grafton-Cardwell, K. Godfrey, M. Hoddle, and Lea Corkidi. 2015. Screening Conventional insecticides against adult ACP. Citrograph Fall 2015. 6(4): 48-55

  • Bates, L. M., J. A. Bethke, G. S. Bender, J. G. Morse, and K. E. Godfrey. 2015. Seasonal Adult Emergence Patterns and Soil Larval Distribution of Diaprepes abbreviatus (Coleoptera: Curculionidae) in Southern California. J. Entomol. Sci. 50(4): 326–334.

  • Villavicencio, L., J. A. Bethke, B. Vander Mey, B. Dahlki and L. Corkidi. 2014. Curative and Preventive Control of Aceria aloinis (Acari: Eriophyidae) in Southern California. Jo. Econ. Entomol. 107 (6): 2088-2094

  • Villavicencio, L.; Bethke, J. A., et al. (2014). "Curative and Preventive Control of Aceria aloinis (Acari: Eriophyidae) in Southern California." Journal of Economic Entomology 106(6): 2088-2094.
  • 34. Bender, G. S.; M., Bates L., et al. (2014). "Evaluation of Insecticides, Entomopathogenic Nematodes, and Physical Soil Barriers for Control of Diaprepes abbreviatus (Coleoptera: Curculionidae) in Citrus." Jo. Econ. Entomol 107(6): 2137-2146.

  • Bender, G. S., L. M. Bates, J. A. Bethke, E. E. Lewis, G. S. Tanizaki, J. G. Morse and K. E. Godfrey. 2014. Evaluation of Insecticides, Entomopathogenic Nematodes, and Physical Soil Barriers for Control of Diaprepes abbreviatus (Coleoptera: Curculionidae) in Citrus. Jo. Econ. Entomol 107 (6): 2137-2146

  • Bethke, J. A., M. Whitehead, J. Morse, F. Byrne, E. Grafton-Cardwell, K. Godfrey and M. Hoddle. 2014. Organic Pesticide Screening at the Chula Vista Insectary. Citrograph May/June 2014. 5(2): 44-51

  • Bethke, J. A.; Whitehead, M., et al. (2014). Organic Pesticide Screening at the Chula Vista Insectary. Citrograph. 5, 44-51. Spring 2014.
  • Bethke, J. A. ; Driestadt, S., et al. (2014). Pest Note: Thrips. Oakland: University of California, Division of Agriculture and Natural Resources. Publication 7429. May 2014. http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7429.html
  • Bethke, J. A. (2013). Insects and Mites Section. UC IPM Pest Management Guidelines: Floriculture and Ornamental Nurseries. UC ANR Publication. Publication 3392. April 2013 (revision). http://www.ipm.ucdavis.edu/PDF/PMG/pmgfloriculture.pdf
  • Reed, D.; Newman, J., et al. (2013). Management of Bagrada bug in nurseries. UC ANR Publication. http://ucipm.ucdavis.edu/EXOTIC/bagradabug.html http://cisr.ucr.edu/bagrada_bug.htrml
  • Bethke, J. A.; Vander Mey, B., et al. (2013). Pest Note: Eye Gnats. Oakland: University of California, Division of Agriculture and Natural Resources. Publication 74164. August 2013. http://ucipm.ucdavis.edu/PESTNOTES/pn74164.html
  • Bethke, J. A.; Dreistadt, S. (2013). Pest Note: Fungus Gnats. Oakland: University of California, Division of Agriculture and Natural Resources. Publication 7448. August 2013. http://ucipm.ucdavis.edu/PESTNOTES/pn7448.html
  • Bethke, J. A.; Shaw, D. (2013). Pest Note: Myoporum Thrips. Oakland: University of California, Division of Agriculture and Natural Resources. Publication 74165. September 2013.
  • Reed, D.; Newman, J., et al. (2013). Pest Note: Bagrada bug. Oakland: University of California, Division of Agriculture and Natural Resources. Publication 74166. December 2013. http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74166.html

  • Reed, D. A., J. P. Newman, T. M. Perring, J. A. Bethke, and J. N. Kabashima. 2013. Pest Note: Bagrada bug. UC ANR Publication 74166

  • Bethke, J. A.; Morse, J., et al. (2012). Asian citrus psyllid pesticide testing begins at the Chula Vista Insectary. Citrograph. 3:3, 36-40. May/June 2012.
  • McKenzie, C.; Bethke, J. A., et al. (2012). "Distribution of Bemisia tabaci (Hemiptera: Aleyrodidae) Biotypes in North America following the Q Invasion." Journal of Economic Entomology 105(3): 753-766.
  • Bates, L.; Bethke, J. A., et al. (2011). Biological Control for Diaprepes root weevil. Biological Control 2010 Report.. D.M. Woods. Sacramento, CA, California Department of Food and Agriculture, Plant Health and Pest Prevention Services. 21-22.
  • Bates, L.; J., Bethke, et al. (2011). Biological Control of Diaprepes root weevil.D. Woods. Sacramento, CA, California Department of Food and Agriculture, Plant Health and Pest Prevention Services. 21-22. 2011.
  • Bethke, J. A.; Kabashima, J., et al. (2011). Insects, Mites, Snails and Slugs. Container Nursey Production and Business Management Manual.. Julie Newman.: 201-224.
  • Newman, J.; Bethke, J. A., et al. (2011). Integrated Pest Management (IPM). Container Nursery Production and Business Management Manual.. Julie Newman.: 159-178.
  • Kabashima, J.; Bethke, J. A., et al. (2011). Invasive Pests. Container Nursey Production and Business Management Manual.. Julie Newman.: 253-268.
  • Byrne, F.; Morse, J., et al. (2011). Optimization of imidacloprid application rates for the management of ACP on containerized citrus. Citrograph. 45-47. January/February 2011.
  • Cloyd, R.; Bethke, J. A., et al. (2011). "Systemic Insecticides and Their Use in Ornamental Plant Systems." Floriculture and Ornamental Biotechnology 5(1): 1-9.
  • Bethke, J. A.; Cloyd, R. A., et al. (2011). "Systemic Insecticides and Their Use in Ornamental Plant Systems." 5(1): 1-9.
  • Bethke, J. A. (2011). Thrips Efficacy. Annual Society of American Florists Pest and Production Management Conference, Society of American Florists, Alexandria, VA.
  • Bethke, J. A.; Cloyd, R. A. (2010). "Impact of neonicotinoid-based insecticides on natural enemies in protected culture and interiorscapes." 67(1): 3-9.
  • Cloyd, R.; Bethke, J. A. (2010). "Impact of neonicotinoid-based insecticides on natural enemies in protected culture and interiorscapes." Pest Management Science 67(1): 3-9.
  • Bethke, J. A.; Sorensen, M. A., et al. (2010). "Potential Host Plants of." 39(1): 159-163.
  • Sorensen, M.; Bethke, J. A., et al. (2010). "Potential Host Plants of Trirhabda geminata (Coleoptera: Chrysomelidae): Impacts on Survival, Development, and Feeding." Environmental Entomology 39(1): 159-136.
  • Millar, J.; Paine, T., et al. (2009). Eucalyptus tortoise Beetles. Pest Note. UC ANR Publication. Publication 74104. January 2009. http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74104.html
  • Bethke, J. A.; Millar, J. G., et al. (2009) Eucalyptus tortoise Beetles.
  • Bethke, J. A.; Byrne, F. J., et al. (2009). "First Record of the Q Biotype of the Sweetpotato Whitefly." 65(4): 345-350.
  • Bethke, J. A.; Byrne, F., et al. (2009). "First Record of the Q Biotype of the Sweetpotato Whitefly, Bemisia tabaci, in Guatemala." Phytoparasitica 65(4): 345-350.
  • Bethke, J. A. (2009). Insects and Mites Section. UC IPM Pest Management Guidelines: Floriculture and Ornamental Nurseries. UC ANR Publication. Publication 3392. 2009 (revision). http://www.ipm.ucdavis.edu/PMG/pmgauthors.html
  • Bethke, J. A. (2009). Insects and Mites Section. Integrated Pest Management for Floriculture and Nurseries. UC ANR Publication. Publication 3402.
  • Bethke, J. A. (2009). Insects and Mites Section. UC ANR Publication 3392, 2009 revision. Publication 3392, 2009 revision. 2009. http://www.ipm.ucdavis.edu/PMG/pmgauthors.html
  • Bethke, J. A. (2009). Insects and Mites Section. UC ANR Publication 3402, 2009 revision. 2009.
  • Bethke, J. A.; Cloyd, R. (2009). "Pesticide use in ornamentals: what are the benefits?" Pest Management Science 37(1): 61-64.
  • Bethke, J. A.; Cloyd, R. A. (2009). "Pesticide use in ornamentals: what are the benefits?" 37(1): 61-64.
  • Byrne, F.; Oetting, R., et al. (2009). "Understanding the Dynamics of Neonicotinoid Activity in the Management of Bemisia tabaci Whiteflies on Poinsettias." Crop Protection 29: 260-266.
  • Robb, K.; Costa, H., et al. (2007). Insects and Mites. UC IPM Pest Management Guidelines: Floriculture and Ornamental Nurseries. UC ANR Publication. Publication 3392.
  • Bethke, J. A.; Robb, K. L., et al. (2007). Insects and Mites. UC ANR Publication 3392, 2007 revision. Publication 3392, 2007 revision:Publication 3392, 2007 revision. 2007.
  • Bethke, J. A.; Blua, M. J., et al. (2001). "Effect of selected pesticides on." 94: 1031-1036.
  • Bethke, J. A.; Blua, M., et al. (2001). "Effect of selected pesticides on Homalodisca coagulata (Homoptera: Cicadellidae) and transmission of oleander leaf scorch in a greenhouse study." Journal of Economic Entomology 94: 1031-1036.
  • Bethke, J. A.; Blua, M. J., et al. (2001). "Range extension of." 77: 54-56.
  • Bethke, J. A.; Blua, M., et al. (2001). "Range extension of Pseneo puncatatus and notes on predation of an introduced sharpshooter, Homalodisca coagulata." Pan-Pacific Entomologist 77: 54-56.
  • Dreistadt, S. H. (2000). Insects, Mites and Other Invertebrates. UC Davis, CA, UC Division of Natural Resources Publication 3402. Publication 3402: 422.
  • Robb, K.; Costa, H., et al. (2000). Insects, Mites and Other Invertebrates. Dreistadt, S.H. Integrated Pest Management for Floriculture and Nurseries. University of California, Davis, University of California Division of Natural Resources. Publication 3402, 422.
  • Bethke, J. A.; Costa, H. S., et al. (2000). "Transmission of." 35(7): 1265-1267.
  • Costa, H.; Blua, M., et al. (2000). "Transmission of Xylella fastidiosa to oleander by the glassy winged sharpshooter, Homalodisca coagulata." Hortscience 35(7): 1265-1267.
  • Schuch, U.; Redak, R., et al. (1998). "Cultivar, fertilizer, and irrigation affect vegetative growth and susceptibility of chrysanthemum to western flower thrips." Journal of the American Society for Horticultural Science 123(4): 727-733.
  • Bethke, J. A.; Schuch, U., et al. (1998). "Cultivar, fertilizer, and irrigation affect vegetative growth and susceptibility of chrysanthemum to western flower thrips." 123(4): 727-733.
  • Bethke, J. A.; Redak, R. A., et al. (1998). "Melon Aphid Performance on Chrysanthemum as Mediated by Cultivar, and Differential Levels of Fertilization and Irrigation." 88: 41-47.
  • Bethke, J. A.; Redak, R., et al. (1998). "Melon Aphid Performance on Chrysanthemum as Mediated by Cultivar, and Differential Levels of Fertilization and Irrigation." Entomologia Experimentalis et Applicata 88: 41-47.
  • Bethke, J. A.; Redak, R. A. (1997). "Effect of Imidacloprid on the Silverleaf Whitefly." 130: 397-407.
  • Bethke, J. A.; Redak, R. (1997). "Effect of Imidacloprid on the Silverleaf Whitefly, Bemisia argentifolii Bellows and Perring (Homoptera: Aleyrodidae), and Whitefly Parasitism." Annals of Applied Biology 130: 397-407.
  • Bethke, J. A.; Redak, R. A. (1996). "Seasonal Occurrence of the Herbivore." 89: 843-848.
  • Bethke, J. A.; Redak, R. (1996). "Seasonal Occurrence of the Herbivore Trirhabda geminata Horn (Coleoptera : Chrysomelidae) on Encelia farinosa Gray, in Southern California." Annals of the Entomological Society of America 89: 843-848.
  • Bethke, J. A.; Redak, R. A. (1996). "Temperature and Moisture Effects on the Embryonic Stage of." 89: 661-666.
  • Bethke, J. A.; Redak, R. (1996). "Temperature and Moisture Effects on the Embryonic Stage of Trirahbda geminata Horn (Coleoptera: Chrysomelidae)." Annals of the Entomological Society of America 89: 661-666.
  • Bethke, J. A.; Redak, R. A., et al. (1995). "Biology and Laboratory Development of." 88(2): 196-200.
  • Redak, R.; Bethke, J. A. (1995). "Biology and Laboratory Development of Trirhabda geminata (Coleoptera: Chrysomelidae) on the Composite, Encelia farinosa." Annals of the Entomological Society of America 88(2): 196-200.
  • Redak, R.; Bethke, J. A. (1995). "Detection and Seasonal Occurrence of Gall Forming Wasps (Hymenoptera: Eulophidae) on Geraldton Wax Plant." Journal of Economic Entomology 88(2): 387-392.
  • Bethke, J. A.; Schuch, U., et al. (1995). "Whole-Plant Response of Six Poinsettia Cultivars to Three Fertilizer and Two Irrigation Regimes." 121(1): 69-76.
  • Schuch, U.; Redak, R., et al. (1995). "Whole-Plant Response of Six Poinsettia Cultivars to Three Fertilizer and Two Irrigation Regimes." Journal of the American Society for Horticultural Science 121(1): 69-76.
  • Bethke, J. A.; Redak, R., et al. (1994). "Evaluation of Screen Barriers for Exclusion of Insect Pests." California Agriculture 48(3): 37-40.
  • Bethke, J. A.; Redak, R. A., et al. (1994). "Evaluation of Screen Barriers for Exclusion of Insect Pests." 48(3): 37-40.
  • Banner, W.; Banner, W. (1994). Insect Screening. Batavia, IL, Ball Publishing.
  • Baker, J.; Bethke, J. A., et al. (1994). Insect Screening. Banner.. W & M Klopmeyer. Batavia, IL, Ball Publishing.: 278.
  • Bethke, J. A.; Parrella, M. P., et al. (1992). "Evaluation of." 20(2): 713-719.
  • Parrella, M.; Paine, T., et al. (1992). "Evaluation of Encarsia formosa (Hymenoptera: Aphelinidae) for Biological Control of Sweetpotato Whitefly (Homoptera: Aleyrodidae) on Poinsettia." Environmental Entomology 20(2): 713-719.
  • Immaraju, J.; Paine, T., et al. (1992). "Western Flower Thrips (Thysanoptera: Thripidae) Resistance to Insecticides in Coastal California Greenhouses." Journal of Economic Entomology 85(1): 9-14.
  • Bethke, J. A.; Immaraju, J., et al. (1992). "Western Flower Thrips (Thysanoptera: Thripidae) Resistance to Insecticides in Coastal California Greenhouses." 85(1): 9-14.
  • Bethke, J. A.; Paine, T.D., et al. (1991). "Comparative Biology, Morphometrics, and Development of Two Populations of." 84: 407-411.
  • Bethke, J. A.; Paine, T., et al. (1991). "Comparative Biology, Morphometrics, and Development of Two Populations of Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) on Cotton and Poinsettia." Annals of the Entomological Society of America 84: 407-411.
  • Bethke, J. A.; Nuessly, G. S., et al. (1991). "Effect of Host Insect -- Host Plant Associations on Selected Fitness Components of." 1: 164-169.
  • Bethke, J. A.; Nuessly, G., et al. (1991). "Effect of Host Insect-Host Plant Associations on Selected Fitness Components of Encarsia formosa (Gahan) (Hymenoptera : Aphelinidae)." Biological Control 1: 164-169.
  • Bethke, J. A.; Paine, T. (1991). "Screen Hole Size and Barriers for Exclusion of Insect Pests of Glasshouse Crops." Journal of Entomological Science 26(1): 169-177.
  • Bethke, J. A.; Paine, T.D. (1991). "Screen Hole Size and Barriers for Exclusion of Insect Pests of Glasshouse Crops." 26(1): 169-177.
  • Parrella, M.; Bethke, J. A. (1989). "Compatibility of the Aphid Fungus Cephalosporium lecanii with Diglyphus begini a Parasite of the Leafminer Liriomyza trifolii." Pan-Pacific Entomologist 65(4): 385-390.
  • Bethke, J. A.; Parrella, M., et al. (1987). "Effect of Tomato Cultivar and Fertilizer Regime on the Survival of Liriomyza trifolii (Diptera : Agromyzidae)." Journal of Economic Entomology 80: 200-203.
  • Bethke, J. A.; Parrella, M. P., et al. (1987). "Effect of Tomato Cultivar and Fertilizer Regime on the Survival of." 80: 200-203.
  • Bethke, J. A.; Hare, D. J. (1987). "Egg Production and Survival of the Citrus Red Mite on an Artificial Feeding System." 47: 137-143.
  • Hare, D.; Bethke, J. A. (1987). "Egg Production and Survival of the Citrus Red Mite on an Artificial Feeding System." Entomologia Experimentalis et Applicata 47: 137-143.
  • Bethke, J. A.; Parrella, M. P. (1987). "Larval Development and Leafmining Activity of." 64: 17-22.
  • Parrella, M.; Bethke, J. A. (1987). "Larval Development and Leafmining Activity of Liriomyza trifolii (Diptera : Agromyzidae)." Pan-Pacific Entomologist 64: 17-22.
  • Bethke, J. A. (1985). Influence of host plant on the polyphagous leafminer. Riverside, CA, UC Riverside, 67 pp. Masters. 1985.
  • Bethke, J. A. (1985). Influence of host plant on the polyphagous leafminer, Liriomyza trifolii (Burgess) (Diptera: Agromyzidae). University of California, Riverside, CA. Masters, 67.
  • Bethke, J. A.; Parrella, M. P. (1985). "Leaf Puncturing, Feeding and Oviposition Behavior of." 39: 149-154.
  • Bethke, J. A.; Parrella, M. (1985). "Leaf Puncturing, Feeding and Oviposition Behavior of Liriomyza trifolii." Entomologia Experimentalis et Applicata 39: 149-154.
  • Bethke, J. A.; Parrella, M. P. (1984). "Biological Studies of." 77: 342-345.
  • Parrella, M.; Bethke, J. A. (1984). "Biological Studies of Liriomyza huidobrensis (Diptera : Agromyzidae) on Chrysanthemum, Aster and Pea." Journal of Economic Entomology 77: 342-345.
  • Parrella, M.; Robb, K., et al. (1983). "Influence of Selected Host Plants on the Biology of Liriomyza trifolii (Diptera : Agromyzidae)." Annals of the Entomological Society of America 76: 112-115.
  • Bethke, J. A.; Parrella, M. P., et al. (1982). "Control of." 36: 17-19.
  • Parrella, M.; Robb, K., et al. (1982). Control of Liriomyza trifolii with Biological Agents and Insect Growth Regulators. California Agriculture. 36, 17-19.

California Agriculture Article Contributions

ANR Workgroup Associations

Return to Advice to Grow By