Like clockwork, Mid-South cotton growers know that pigweed escapes will begin to pop up in their fields by mid-July.
In addition to being prolific seed producers, the pesky weed can also feature resistance to several types of herbicides, making escapes all the more likely throughout the summer months.
“Everybody and their brother knows that we’ve got glyphosate resistance,” says Darrin Dodds, Extension cotton specialist with Mississippi State University. “I think everybody realizes there is a large amount of ALS resistance in those populations as well. The thing we’ve cautioned people about this year, is to not get caught behind the eight-ball, because this PPO resistance in Palmer amaranth is spreading.”
Dodds says keeping a vigilant eye on the fields is important as the summer drags on.
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