Associate Professor of Entomology and Extension Specialist

Panhandle Research and Extension Center, 4502 Avenue I, Scottsbluff, NE 69361
Phone: 308-632-1369.  Fax: 308-632-1365.


  • Ph.D. 2007, Iowa State University ' Entomology and Plant Pathology
  • M.S. 2001, Southern Illinois University ' Zoology
  • B.A. 1998, Southern Illinois University ' Zoology
  • A.A.S. 1996, Illinois Central College ' Biology


Applied Ecology, host plant resistance, disease vector biology in plants, plant disease epidemiology


  • Educational Project Award, Entomological Society of America, Northcentral Branch, (2009)
  • J. H. Comstock Award, Entomological Society of America, Northcentral Branch, (2008)
  • Exceptional Service Award, Entomological Society of America (2006, 2007)


Entomological Society of America, American Society of Sugar Beet Technologists


Support, design, and develop research projects principally in applied entomology. Projects support the management of insects of importance for field crops and range in western Nebraska. Current focus crops include corn, wheat, sunflower, dry bean, potato, and sugar beet.


Develop and deliver statewide educational media for insect management of field crops and rangeland. Media include the delivery and development of online media as well as mobile decision support systems. Crops include corn, wheat, sunflower, dry bean, potato, and sugar beet. In rangeland the focus is on sustainable rangeland management.


  • Mapping resistance in edible dry beans to chewing insects using the Mexican bean beetle.
  • Evaluating the role of soil arthropods in concert with host plant resistance in suppressing the sugarbeet root aphid, Pemphagus betae.
  • Development of a disease forecasting system for zebra chip and the tomato/potato psyllid, Bactericera cockerelli


1. Adamski, D., P. J. Johnson, A. A. Boe, J. R. Prasifka, J. D. Bradshaw, and A. Pultyniewicz. 2010. Descriptions of life-stages of Blastobasis repartella (Lepidoptera: Gelechioidea: Coleophoridae: Blastobasinae) and observations on its biology in switchgrass. Zootaxa. In Press

2. Bradshaw, J. D., J. R. Prasifka, K. L. Steffey, and M. E. Gray. 2010. First field report of populations of two potential aphid pests of the bioenergy crop Miscanthus x giganteus. Florida Entomologist. 93(1): 135'137.

3. Zhang, C., J. D. Bradshaw, S. A. Whitham, and J. H. Hill. 2010. The development of an efficient multi-purpose BPMV viral vector set for foreign gene expression and RNA silencing. Plant Physiology. DOI:10.1104/pp.109.151639

4. J. R. Prasifka, J. D. Bradshaw, Arvid A. Boe, DoKyoung Lee, David Adamski and M. E. Gray. 2009. Symptoms, distribution and abundance of the stem-boring caterpillar, Blastobasis repartella (Dietz), in switchgrass. Bioenergy Research. DOI:10.1007/s12155-009-9064-8.

5. J. R. Prasifka, J. D. Bradshaw, R. L. Meagher, R. N. Nagoshi, K. L. Steffey, and M. E. Gray. 2009. Development and feeding of fall armyworm, Spodoptera frugiperda, on Miscanthus x giganteus and switchgrass. Journal of Economic Entomology. 102(6): 2154'2159.

6. Bradshaw, J. D. and M. E. Rice. 2009. Of ants and elephants: Measuring student appreciation for insects and charismatic megafauna during an African safari. American Entomologist 55(1): 6'8.

7. Lam, W. K. F, R. K. Krell, J. D. Bradshaw, M. E. Rice, and L. P. Pedigo. 2008. Validation and application of predictive models on bean leaf beetle (Coleoptera: Chrysomelidae) population dynamics in central Iowa, pp.334-399. In Jolivet, P. H., J. A. Santiago-Blay, and M. Schmitt (eds.), Research on Chrysomelidae, Vol. 1. Brill Academic Publishers, Netherlands.

8. Bradshaw, J. D., M. E. Rice, and J. H. Hill. 2008. Evaluation of management strategies for bean leaf beetles (Coleoptera: Chrysomelidae) and bean pod mottle virus (Comoviridae) in soybean. Journal of Economic Entomology 101(4): 1211'1227.

9. Johnson, K. D., M. E. O'Neal, J. D. Bradshaw, and M. E. Rice. 2008. Is preventative, concurrent management of the soybean aphid (Hemiptera: Aphididae) and bean leaf beetle (Coleoptera: Chrysomelidae) possible? Journal of Economic Entomology 101(3): 801'809.


  • Tanzania 'Teaching assistant field leader for Iowa State Study Abroad
  • Queensland, Australia 'Submitted conference presentation
  • Scottland 'Submitted conference presentation
  • South Africa 'Submitted conference presentation
  • Sweden 'Invited presentation
  • Belgium 'Visiting scientist