Palmer amaranth remains one of the most difficult weeds to manage, and when pigweed escapes preemergence control, postemergence decisions can quickly turn into a kitchen sink approach where multiple products are added to the tank. Because postemergence options depend on the crop system and trait technology, we evaluated a wide range of postemergence programs in 2025 to better understand overall control trends. Continue reading
Soybean replanting decisions are almost always a tough call and a subjective decision. Unseasonably warm and dry conditions throughout the late winter and up to the present have sent planting progress well above any “average” number I can come up with. As we wrap up the month of April, let’s take a look at some objective factors that can help inform replant decisions on beans.
We are 4 weeks early for the typical POST herbicide application window. These applications need to be effective and steward well. In fact stewardship of the herbicides used in those applications is critical. Crops injured by off-target herbicides were numerous last year. While many think about either dicamba or 2,4-D for off-target concerns, last year clethodim drift on corn was the most widely reported issue across the state. Continue reading
The UT Cotton Scout School is scheduled for Wednesday, May 20th, at the West Tennessee Research and Education Center (605 Airways Blvd, Jackson). There is no fee, and preregistration is not required. Registration begins at 8:00 AM with the program starting at 8:30. Pesticide points in categories 1, 4, 10 and 12 will be offered and a BBQ lunch will be provided. Content will include classroom and hands-on training with an optional go-to-the-field session after lunch. Topics covered will include cotton development and identification and symptoms of insect pests, plant diseases, and weeds. Contact Sebe Brown (318)-498-1283, sbrow175@utk.edu with questions.
Ryegrass continues to persist in too many fields. Often the ryegrass in these fields has escaped both glyphosate and clethodim (Picture 1). In fields like this we typically will just have to live with ryegrass over the next 4 weeks as it completes maturity and goes to seed. Some have asked what can they spray? Liberty is really the last best option applied on a hot day to help speed up the ryegrass maturity process. Continue reading
I never thought by mid-April that corn in some fields would have grown to the point it is not safe to apply a pint of dicamba (>5”) yet here we are. The forecast suggests next week will not be a good spray week so time will be short that other herbicides can be applied safely to corn over the top. Continue reading
