By Dusty Sonnenberg, CCA, Ohio Field Leader
With prevent plant acres abundant in 2019, some fields experienced a huge increase in the weed seed bank. For some of those fields, pre- and post- herbicide applications were delayed, or did not occur at all. In other fields, weed control was attempted by mowing and tillage prior to seed development. Looking ahead to 2020, weed management could be a challenge.
“This is one of those time you do not want to cut out any of your pre- herbicides or cut rates on your post-,” said Mark Loux, Ohio State University Extension weed scientist.
The three primary weeds of most concern coming out of the 2019 prevent plant acres include: waterhemp, ragweeds, and marestail.
“Farmers need to be sure to have a comprehensive effective herbicide program that includes; effective burndown or tillage, a full rate of preemergence herbicide with residuals, and choosing an effective post emerge soybean trait system,” Loux said.