Herbicide resistant Palmer amaranth has required growers to adapt to an integrated weed control approach to help assist the new weed management technologies available.
According to Drake Copeland with the University of Tennessee, the adoption of cover crops in the state has proven to be a major tool for successfully controlling Palmer amaranth.
“Palmer amaranth-infested fields in Tennessee are cleaner this year compared to the last decade,” states Copeland in a UTCrops blog post. “When considering a cover crop, it is important to pick one or a mixture that best suits the following cash crop. Cover crops should be considered the same way you would consider a pre herbicide in your cash crop. They suppress weeds but can also be additive to the control of the pre herbicide you actually put out in your cash crop.
“Both legume and grass cover crop species are dominant choices when considering a cover crop,” he points out. “However, some cash crops seem to thrive better in certain covers. In short, cover crops are cash crop specific.”
In his post, Copeland reviews the options and advantages of legume cover crops, grass cover crops and cover crop mixtures in cotton, corn and soybeans. Follow this link to see the entire article and data.