Now is the time to start planning fall cover crops to help improve control of herbicide-resistant Palmer amaranth and other weeds in an integrated system with herbicides.
A recent University of Tennessee survey showed that 22 percent of the state’s row crop acres were planted after a cover crop. In a recent blog post, Garret Montgomery says that percentage needs to increase. As Montgomery noted, “A simple way to think about your cover crop is like a PRE herbicide. This is two-fold, in that it will help supplement your PRE, and also in that you pick and choose PRE herbicides based on your cash crop.”
Trenton Roberts, assistant research professor with the University of Arkansas, says there are a number of benefits that growers can realized by adding winter cover crops into their production systems. But he also notes that the potential benefits of cover crops can easily be lost by not taking time to develop an effective cover crop management plan that involves cover crop variety selection, planting date, seeding rate and cover crop termination method and timing.