The 10 most common weeds in corn, in Mississippi are broadleaf signalgrass, annual morningglories, southern crabgrass, common cocklebur, johnsongrass , sicklepod, purple nutsedge, pigweeds, Pennsylvania smartweed, and goosegrass. The 10 most troublesome weeds are broadleaf signalgrass, annual morningglories, common cocklebur, common bermudagrass, horsenettle , purple nutsedge, sicklepod, Palmeramaranth, southern crabgrass, and yellow nutsedge. Weed control in conventional tilled cotton combines many management tactics, including preplant tillage , preplant herbicides , preemergence herbicides , cultivation , and postemergence herbicides . Some farmers have taken a new look at an old weed management technique that was widely used in the 1950's and 1960's, flame cultivation . Back to Cotton .
Weeds are a significant pest problem in most soybean fields.
Producers typically rely on preplant, preemergence and postemergence herbicide applications, often combined with cultivation to manage weeds. There are numerous herbicides available to control weeds in soybean. The 10 most common weeds in soybeans in Mississippi are johnsongrass , prickly sida , entireleaf morningglory, common cocklebur, pitted morningglory, spotted spurge, sicklepod, hemp sesbania , barnyardgrass, trumpetcreeper. The 10 most troublesome weeds in soybean in Mississippi are sicklepod, eclipta, redvine, spotted spurge, johnsongrass , prickly sida , horsenettle , Pennsylvania smartweed, common bermudagrass, and trumpetcreeper. One of the newest methods of weed management, in soybeans, involves transgenic cultivars that can tolerate nonselective herbicides, such as Roundup Ultra and Liberty.