Some reports of ineffective burndown applications to winter annual cover crops (winter wheat, cereal rye, hairy vetch, crimson clover, etc.) have been coming in. Even in our research at the West Tennessee Research and Education Center cover crops have proven difficult to control with a single pass of the sprayer. Paraquat and glyphosate are the typical go-to herbicides for this type of burndown application, but neither has proven consistently effective this spring. Continue reading
Judging by rating corn trials this week the answer depends upon the herbicide. Continue reading
Many producers in Tennessee are utilizing metribuzin (Sencor/Lexone/Tricor/etc) pre emergence in their soybeans to help control Palmer amaranth. Continue reading
Palmer amaranth started emerging last week. Some of it is ½ to a 1” tall today April 22. Of course this is just the vanguard of the Palmer that will be coming. Despite this early Palmer flush typically being less numbers per foot than later emergence events, it is the most important emergence event to control. Continue reading
I thought I would put a plug in for a good article written by my counterpart at Mississippi State University (Dr. Angus Catchot). See this link for everything you wanted to know about calibration and more: Calibration Tips for Insecticides.
There have been several calls over the past couple of days on how to destroy partial corn stands in order to replant back to corn. We conducted a good deal of research on this topic back in 2007 and 2008. Continue reading
Rating burndown studies this morning I could not help but notice that the horseweed (marestail) had grown about 3” since last Friday. Some is already 6” tall. It will quickly get large enough to make even some of our better burndown options inconsistent. Continue reading
The 4 to 5” of rain much of West Tennessee saw last Thursday 4/11/13 was not good on the wheat, particularly in poorly drained fields. Winter wheat that went under water may have to be planted back to another crop. Knowing when and what herbicides were applied to flood damaged wheat is a major consideration on a potential recrop decision. Continue reading