Presentations
W10
Pest Management
Wed, Dec 14, 2022
10:00am to 10:50am
W3
Pest Management
Wed, Dec 14, 2022
3:00pm to 3:50pm
Impact of Cover Crops on Soil Residual Herbicides
Interest in using cover crops for soil health and erosion protection continues to track in a positive direction. However, knowledge and replicated research on the weed control benefits of cover crop use lags behind the adoption rate, particularly in how cover crops impact residual herbicide performance on key herbicide-resistant summer annual weeds. The purpose of this presentation is to update on the latest research by the Purdue Weed Science group on the efficacy of cover crops for key summer annual, herbicide-resistant weeds like waterhemp, giant ragweed, marestail, giant foxtail, and to share our preliminary results on the impact of cover crop residue on residual herbicide deposition and efficacy.
Speaker
Bill Johnson
Dr. Johnson is a Professor of Weed Science in the Department of Botany and Plant Pathology at Purdue University. He has statewide responsibilities for weed science research and extension in agronomic crops, and he teaches a graduate level Weed Biology course on campus. Dr. Johnson has extensive experience in the biology and management of herbicide-resistant weeds and crops, and interactions between weeds and other plant pests. Dr. Johnson is a Past President and Fellow of the North Central Weed Science Society (NCWSS). He has won Outstanding Extension Specialist Awards from Purdue University, CropLife America, and the Weed Science Society of America. He has published nearly 200 peer reviewed manuscripts and over 100 extension publications. He has trained 33 graduate students, three post-doctoral research associates, and currently has an additional 4 students currently working on MS or Ph.D. degrees in Weed Science.