Years of compounded drought conditions could spell issues for the next growing season. But not for the reason you’d think. Because moisture plays a key role in breaking down herbicides present in soils, dry conditions pave the way for carryover to become a concern. Iowa State University Field Agronomist Meaghan Anderson says even with moisture looking promising this winter amidst ample snowfall, she still anticipates herbicide carryover issues in central Iowa. According to the U.S. Drought Monitor, 90% of the state is experiencing extreme dryness or drought, with one-third of the state in extreme drought.

Even though growers can’t influence the amount of rain received, Farm Journal Field Agronomist Ken Ferrie says they still have some influence over the intensity of herbicide carryover. He says growers should look at their crop-rotation restrictions on herbicides applied last year and the dates they were applied. Those looking to plant early soybeans may want to reconsider if their fields are at risk of carryover.

Read more on herbicide carryover concerns for this growing season here.