AMES, Iowa — The Iowa Learning Farms (ILF) conservation webinar taking place August 9 at noon CDT will feature Bill Johnson, Ph.D. professor of weed science, Purdue University. Johnson focuses on developing weed management systems that are safe, economically and environmentally sound, integrate cultural practices with judicious herbicide use, improve efficiency of production, and minimize selection pressure for herbicide-resistant weeds. In addition, he promotes grower acceptance of these weed management systems through education efforts targeting growers, crop consultants, input suppliers, industry representatives and extension educators in Indiana and surrounding states.
In the webinar, “How do Cover Crops Impact Residual Herbicides in Corn and Soybean?,” Johnson will discuss the impact of cover crops on soil residual herbicides, and how persistence of the herbicides may affect corn and soybean production on Midwestern farms. He will highlight how cover crops impact deposition of residual herbicides on the soil and the influence of microbial activity on residual herbicide persistence in the soil. Johnson will also discuss integrated weed management approaches which incorporate more weapons such as cover crops, tillage, and harvest weed seed management in the battle against weeds while sustaining the efficacy of currently available herbicide tools.
“Weeds that are resistant to postemergence herbicides used in corn and soybean are the main crop protection problem faced by growers on an annual basis,” said Johnson. “The use of residual herbicides is currently the easiest way to improve control of these weeds. High residue cover crops can be an effective way to supplement residual herbicides on a few selected weeds, but more information is needed on both the positive and negative interactions that can occur between cover crops and soil residual herbicides.”
Participants are encouraged to ask questions of the presenters. People from all backgrounds and areas of interest are encouraged to join.
Don’t miss this webinar!
DATE: Wednesday, August 9, 2023
TIME: 12:00 p.m. CDT
HOW TO PARTICIPATE:
Shortly before 12:00 pm CDT, click the link below or type this web address into your internet browser:
https://iastate.zoom.us/j/
Or, join via phone:
Dial: 312-626-6799
Meeting ID: 364 284 172
Upcoming Webinars in the Series:
Up Next: Wednesday, August 16, 2023, “Comparing Infiltration Between Prairie Strips and Row Crop Fields Across Iowa,” with Eric Henning, Iowa State University
- 8/23: Alicia Vasto, Iowa Environmental Council
- 8/30: Rob Malone, Claire Phillips and Peter O’Brien, USDA-Agricultural Research Service
The webinar will also be recorded and archived. All archived webinars are available on the ILF website, so that they can be watched at any time.
ILF has applied for a Certified Crop Adviser board-approved continuing education unit (CEU) for attending this webinar. Those who participate in the live webinar are eligible. Information about how to apply to receive the credit will be provided at the end of the live webinar.
