Controlling weed resistance in 2016 is a challenge for farmers. Purdue weed specialist Bill Johnson says the best approach this is to assume you have resistance. He told HAT that producers should expect to have to have resistant weeds no matter what.
Johnson said there are four main types of resistant weeds that producers should consider controlling, “If a grower has marestail in has fields, he should assume it is resistant. At least 80% of soybean fields in Indiana have resistance to glyphosate.” He added that marestail, giant ragweed, water hemp, and palmer amaranth. He said some of these weeds may make a comeback in 2016.
In the Better Farming video this month, Johnson suggests that early action on weed control will be a good course of action.