By Forrest Laws
Delta Farm Press
Soybean growers may want to reconsider how they use some of their standard pre-emergence herbicides as they make plans for what experts believe could be an extremely challenging weed control season in 2022.
Weed scientists aren’t ready to say Palmer amaranth has developed resistance to the herbicides in question – Dual Magnum and Warrant – but studies show they may not always be as effective as they once were on pigweed.