Panhandle researchers are conducting 16 field trials this year to test six new herbicides and various management strategies to help producers control surging Palmer amaranth populations in sugarbeets and dry beans.
In order to calculate an herbicide resistance risk score, four years of crops need to be entered. Once herbicides are chosen for all four years and a weed species is selected, the model will calculate an herbicide resistance risk score for each herbicide site of action that was selected.
Palmer amaranth emergence occurs throughout the season, generally from early May to late August. Consequently, weed control programs targeting Palmer amaranth need to provide season-long control, or from planting through canopy closure.
With the depressed corn and soybean prices in recent years in the United States, growers have shown interest in conventional soybean. Herbicide programs should be selected carefully that provide season-long weed control.
Profitable crop production starts with a weed control program that includes pre-plant and/or pre-emergence herbicides to deliver long-lasting, residual weed control. A spring burndown program in corn and soybean provides effective weed control to prepare for planting and helps to decrease the seedbank during the season.
The United Soybean Board (USB) Take Action initiative and university weed scientists across the Midwestern United States have developed a free webinar series covering various weed and herbicide management topics.