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. 


Efficacy and nontarget effects of broadcast treatments to manage spotted lanternfly (Hemiptera: Fulgoridae) nymphs
Journal of Economic Entomology, Keller, Joseph A., Walsh, Brian, Johnson, Anne, Jenkins, Nina, Rost, John, Treichler, Brianna, Biddinger, David, Calvin, Dennis D., Hoover, Kelli, Urban, Julie, Roush, Richard T., 2023

Molecular diagnostics of Conopomorpha cramerella (Snellen) (Lepidoptera: Gracillaridae)
Agricultural and Forest Entomology, Valenzuela, Isabel, Lambert, Smilja, Hamilton, Andrew J., Roush, Rick T., 2022

Spotted Lanternfly (Hemiptera: Fulgoridae) Nymphal Dispersion Patterns and Their Influence on Field Experiments
Environmental Entomology, Calvin, D. D., Keller, J., Rost, J., Walsh, B., Biddinger, D., Hoover, K., Treichler, B., Johnson, A., Roush, R. T., 2021

Applications of Beauveria bassiana (Hypocreales: Cordycipitaceae) to Control Populations of Spotted Lanternfly (Hemiptera: Fulgoridae), in Semi-Natural Landscapes and on Grapevines
Environmental Entomology, Clifton, Eric H., Hajek, Ann E., Jenkins, Nina E., Roush, Richard T., Rost, John P., Biddinger, David J., Nachappa, Punya, 2020

Effect of Bt broccoli and resistant genotype of Plutella xylostella (Lepidoptera: Plutellidae) on life history and prey acceptance of the predator Coleomegilla maculata (Coleoptera: Coccinellidae)
Biological Control, Liu, Xiaoxia, Abro, Ghulam Hussain, Han, Fei, Tian, Junce, Chen, Mao, Onstad, David, Roush, Rick, 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