Richard Roush

Richard Roush

  • Dean, College of Agricultural Sciences
201 Agricultural Administration Building
University Park, PA 16802


  • Ph.D., University of California, Berkeley
  • B.S., University of California, Davis

Rick Roush serves as the Dean of Penn State's College of Agricultural Sciences, which includes 3,000 undergraduate students, 450 graduate students, 250 faculty, and 1,500 staff from all the state's 67 counties. The College boasts nine academic programs, featuring 17 undergraduate majors, 22 minors, graduate studies in 18 majors, two-year and certificate programs, and online learning opportunities.

In this role, Dr. Roush is responsible for the administration of all the College's educational, research, government, alumni, industry relations, and Penn State Extension programs. He has particularly focused on key issues facing agriculture and rural communities in Pennsylvania, including water quality, job development, drug addiction, and pest management. 

Dean Roush is internationally recognized for research and implementation of strategies to delay insect pests and weeds from evolving resistance to genetically modified crops and pesticides. Prior to his arrival at Penn State in 2014, Dr. Roush held positions at the University of Melbourne, the University of California, the University of Adelaide, Cornell University, Mississippi State University, and Texas A&M University. 


Effect of Bt broccoli and resistant genotype of Plutella xylostella (Lepidoptera
Biological Control, Liu, Xiaoxia, Abro, Ghulam Hussain, Han, Fei, Tian, Junce, Chen, Mao, Onstad, David, Roush, Richard T., Zhang, Qingwen, Shelton, Anthony M., 2015

Practical yield loss models for infestation of cocoa with cocoa pod borer moth, Conopomorpha cramerella (Snellen)
Crop Protection, Valenzuela, Isabel, Purung, Hussin Bin, Roush, Richard T., Hamilton, Andrew J., 2014

Natural enemies delay insect resistance to Bt crops
PloS one, Liu, Xiaoxia, Chen, Mao, Collins, Hilda L., Onstad, David W., Roush, Richard T., Zhang, Qingwen, Earle, Elizabeth D., Shelton, Anthony M., 2014

The potential for carbon sequestration in Australian agricultural soils is technically and economically limited
Scientific reports, Lam, Shu Kee, Chen, Deli, Mosier, Arvin R., Roush, Richard, 2013

Modeling the integration of parasitoid, insecticide, and transgenic insecticidal crop for the long-term control of an insect pest
Journal of economic entomology, Onstad, David W., Liu, Xiaoxia, Chen, Mao, Roush, Richard T., Shelton, Anthony M., 2013

Genetically modified crops shrink farming's pesticide footprint
Australasian Biotechnology, Roush, Richard, Tribe, David, 2012

Effect of Bt broccoli or plants treated with insecticides on ovipositional preference and larval survival of plutella xylostella (Lepidoptera
Environmental Entomology, Liu, Xiaoxia, Chen, Mao, Onstad, David, Roush, Richard T., Collins, Hilda L., Earle, Elizabeth D., Shelton, Anthony M., 2012

Effect of insecticides and plutella xylostella (Lepidoptera
Journal of economic entomology, Liu, Xiaoxia, Chen, Mao, Collins, Hilda L., Onstad, David, Roush, Rick, Zhang, Qingwen, Shelton, Anthony M., 2012

Effect of Bt broccoli and resistant genotype of Plutella xylostella (Lepidoptera
Transgenic Research, Liu, Xiaoxia, Chen, Mao, Onstad, David, Roush, Rick, Shelton, Anthony M., 2011

Pathogenicity of Phragmidium violaceum isolates on European blackberry clones and on leaves of different ages
Plant Pathology, Evans, K. J., Gomez, D. R., Jones, M. K., Oakey, H., Roush, Richard T., 2011

Developmental penalties associated with inducible tolerance in Helicoverpa armigera to insecticidal toxins from Bacillus thuringiensis
Applied and environmental microbiology, Rahman, Mahbub, Glatz, Richard, Roush, Rick, Schmidt, Otto, 2011

Induction and transmission of tolerance to the synthetic pesticide emamectin benzoate in field and laboratory populations of diamondback moth
Journal of economic entomology, Rahman, M. M., Baker, G., Powis, K. J., Roush, R. T., Schmidt, O., 2010

Laboratory and field evidence of post-release changes to the ecological host range of Diorhabda elongata
Biological Control, Thomas, Hillary Q., Zalom, Frank G., Roush, Richard T., 2010