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Phil Westra

Dr. Westra

Weed Science

Professor Emeritus and Extension Specialist


Extension Information
Extension Specialists Profiles
Pest Management Brochure


Research Interests:

• Biology, ecology, and control of jointed goatgrass in winter wheat
• Research on herbicide resistant weeds
• Precision agriculture weed research
• Herbicide/soil interactions
• Gene flow in winter wheat
• Weed shifts in diverse weed management systems
• Perennial and noxious weed control

Selected Publications:

Belles, D., D. Shaner, P. Westra, G. Brunk. 2006. Comparison of efficacy, absorption and translocation of three glyphosate formulations on velvetleaf (Abutilon theophrasti). Pest Manag. Sci. 62:1177-1181.

Howatt, K. A., P. Westra and S. J. Nissen. 2006. Ethylene effect on kochia (Kochia scoparia) and emission following dicamba application. Weed Sci. 54:31-37.

Shaner, D. L., P Westra, and S. Nissen. 2006. AMADS Increases the Efficacy of Glyphosate Formulations on Corn. Weed Technology. 20:179-183.

Shaner, D. L., G. Brunk, D. Belles, P. Westra, S. Nissen. 2006. Soil dissipation and biological activity of metolachlor and S-metolachlor in five soils. Pest Manag. Sci. 62:617-623.

Karam, D., P. Westra, S. J. Nissen, S. M. Ward and J. E. F. Figueiredo. 2004. Genetic diversity among proso millet (Panicum miliaceum) biotypes assessed by AFLP technique. Planta Daninha 22(2): 167-174

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