Now is the time of year when scouting for Palmer amaranth is critical. This weed’s emergence begins in May and will last through the fall. Because of its prolific growth habit and resistance to multiple herbicide modes of action, it is critical to identify and control Palmer amaranth shortly after it emerges.
It is important for growers to have the ability to identify Palmer amaranth so that it is not confused with other pigweed species. Universities have published some excellent resources for ID and control of Palmer, including this Purdue Fact Sheet and this Herbicide-Resistance Management publication. Staying on top of this aggressive weed is critical to managing it and keeping it from competing with crops.
Tips for controlling Palmer amaranth
1. Scout for and identify problem weeds early. Palmer Amaranth is a pigweed species and can easily be confused with other pigweeds, such as redroot pigweed, during early growth stages.… Continue reading