A recent survey in Tennessee showed that 22% or our row crop acres were planted after a cover crop. In light of the PPO resistant Palmer amaranth we believe this number should go up as a good cover crop may help improve control of Palmer amaranth in an integrated system with herbicides. It is time to be making decisions about the cover crops you will be planting this fall. Continue reading
All posts by Larry Steckel, Extension Weed Specialist
August-Planted Soybean Weed Control Considerations
There was about 100,000 acres of crop that the Mississippi claimed when it went out of its banks in July. About 50,000 acres of that is being replanted back to soybeans. Most of that 50,000 acres is being planted this week (8/5). Some questions have come in on how to approach weed control in these ultra-late planted soybean. Continue reading
Identification of PPO-Resistant Palmer Amaranth
Identification of PPO-resistant Palmer amaranth has been a concern for many over the past couple of weeks. I am sure many of the Palmer amaranth escapes in West Tennessee are not due to resistance. However some definitely are. We are up to 4 counties now where the Palmer amaranth with the PPO-resistant gene has been identified. So how can one tell if Palmer amaranth that escapes FlexStar, Ultra Blazer or Cobra is due to resistance or another issue? Continue reading
Palmer Amaranth Management in 2016
There has been some discussion about how to manage Palmer amaranth next year in light of the likely PPO-resistant Palmer amaranth in the picture in some fields. Continue reading
Possible PPO-Resistant Palmer amaranth
Timely applications of recommended rates of Flexstar did not control Palmer amaranth in two fields in West Tennessee. Continue reading