James A. Bethke

Farm Advisor

151 E. Carmel St.
San Marcos, CA 92078
(760) 752-4715
jabethke@ucanr.edu

Also in:
San Diego County

Specialty

Nurseries and Floriculture

Education

M.S. Entomology, UC Riverside. 1985

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

• Beneficial Insects - Other
• Plant Commodities and Products
• Ornamental Crops, Landscape and Turf
• Arboreta and Botanical Gardens
• Cut Flowers, Foliage and Greens
• Potted Plants
• Woody Shrubs and Ornamental Vines
• Plants and Their Systems
• Insects, Mites, and Other Arthropods Affecting Plants
• Biological Control of Pests Affecting Plants
• Integrated Pest Management Systems
• Beneficial Insects
• Ipm
• Endemic Species
• Invasives
• Endemic and Invasive Pests and Diseases
• Water Quality, Quantity, and Security

Bibliography

Peer Reviewed

• Bates, L., Bethke J., 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.
• Bethke, J. A., R. A. Cloyd, 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. and R. A. Cloyd (2010). "Impact of neonicotinoid-based insecticides on natural enemies in protected culture and interiorscapes." 67(1): 3-9.
• Bethke, J. A., M. A. Sorensen, et al. (2010). "Potential Host Plants of." 39(1): 159-163.
• Bethke, J. A., J. G. Millar, et al. (2009) Eucalyptus tortoise Beetles.
• Bethke, J. A., F. J. Byrne, et al. (2009). "First Record of the Q Biotype of the Sweetpotato Whitefly." 65(4): 345-350.
• Bethke, J. A. (2009). Insects and Mites Section. UC ANR Publication 3392, 2009 revision. Publication 3392, 2009 revision
• Bethke, J. A. (2009). Insects and Mites Section. UC ANR Publication 3402, 2009 revision.
• Bethke, J. A. and R. A. Cloyd (2009). "Pesticide use in ornamentals: what are the benefits?" 37(1): 61-64.
• Bethke, J. A., K. L. Robb, et al. (2007). Insects and Mites. UC ANR Publication 3392, 2007 revision. Publication 3392, 2007 revision
• Bethke, J. A., M. J. Blua, et al. (2001). "Effect of selected pesticides on." 94: 1031-1036.
• Bethke, J. A., M. J. Blua, et al. (2001). "Range extension of." 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.
• Bethke, J. A., H. S. Costa, et al. (2000). "Transmission of." 35(7): 1265-1267.
• Bethke, J. A., U. Schuch, 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., R. A. Redak, 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. and R. A. Redak (1997). "Effect of Imidacloprid on the Silverleaf Whitefly." 130: 397-407.
• Bethke, J. A. and R. A. Redak (1996). "Seasonal Occurrence of the Herbivore." 89: 843-848.
• Bethke, J. A. and R. A. Redak (1996). "Temperature and Moisture Effects on the Embryonic Stage of." 89: 661-666.
• Bethke, J. A., R. A. Redak, et al. (1995). "Biology and Laboratory Development of." 88(2): 196-200.
• Bethke, J. A., U. Schuch, et al. (1995). "Whole-Plant Response of Six Poinsettia Cultivars to Three Fertilizer and Two Irrigation Regimes." 121(1): 69-76.
• Bethke, J. A., R. A. Redak, et al. (1994). "Evaluation of Screen Barriers for Exclusion of Insect Pests." 48(3): 37-40.
• Banner, W. and W. Banner (1994). Insect Screening. Batavia, IL, Ball Publishing.
• Bethke, J. A., M. P. Parrella, et al. (1992). "Evaluation of." 20(2): 713-719.
• Bethke, J. A., J. Immaraju, et al. (1992). "Western Flower Thrips (Thysanoptera: Thripidae) Resistance to Insecticides in Coastal California Greenhouses." 85(1): 9-14.
• Bethke, J. A., T.D. Paine, et al. (1991). "Comparative Biology, Morphometrics, and Development of Two Populations of." 84: 407-411.
• Bethke, J. A., G. S. Nuessly, et al. (1991). "Effect of Host Insect -- Host Plant Associations on Selected Fitness Components of." 1: 164-169.
• Bethke, J. A. and T.D. Paine (1991). "Screen Hole Size and Barriers for Exclusion of Insect Pests of Glasshouse Crops." 26(1): 169-177.
• Bethke, J. A., M. P. Parrella, et al. (1987). "Effect of Tomato Cultivar and Fertilizer Regime on the Survival of." 80: 200-203.
• Bethke, J. A. and D. J. Hare (1987). "Egg Production and Survival of the Citrus Red Mite on an Artificial Feeding System." 47: 137-143.
• Bethke, J. A. and M. P. Parrella (1987). "Larval Development and Leafmining Activity of." 64: 17-22.
• Bethke, J. A. (1985). Influence of host plant on the polyphagous leafminer. Riverside, CA, UC Riverside, 67 pp. Masters
• Bethke, J. A. and M. P. Parrella (1985). "Leaf Puncturing, Feeding and Oviposition Behavior of." 39: 149-154.
• Bethke, J. A. and M. P. Parrella (1984). "Biological Studies of." 77: 342-345.
• Bethke, J. A., M. P. Parrella, et al. (1983). "Influence of Selected Host Plants on the Biology of." 76: 112115.
• Bethke, J. A., M. P. Parrella, et al. (1982). "Control of." 36: 17-19.

ANR Publications

• Eucalyptus Tortoise Beetle: Pest Notes for Home and...
• Floriculture and Ornamental Nurseries: UC IPM Pest...
• Integrated Pest Management for Floriculture and Nurseries

California Agriculture Article Contributions

• Screens deny specific pests entry to greenhouses
• Control of Liriomyza trifolii with biological agents and insect growth regulators

ANR Workgroup Associations

• Floriculture and Nursery - Chair
• Integrated Pest Management of Glassy Winged Sharpshooters and the Diseases they Vector - Member
• Landscape - Member
• Ornamental Horticulture Ext Cont Confr (OHECC) - Member
• Pest Management in ANR - Member

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