Category Archives: Weeds

Quite a few calls have come in this week and most can be divided into two main questions.  The most frequent of these questions is how do I control large horseweed and plant immediately?  The next most common is how do I control large ryegrass and plant now?  Continue reading →

Paraquat (48 fl oz/A) + NIS (0.25%)

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 →

Judging by phone calls over the last week it seems there is some uncertainty in which weed control program to go with in corn. This is understandable given the tight herbicide supply commonly reported. The biggest confusion though seems to be when one had planned on using a certain premix and cannot get it what would be a good replacement? Continue reading →

The growing season last year seemed to run about 3 weeks ahead of “normal”.  This season seems to be running, if anything, about 2 weeks later than normal. It looks like this upcoming week will at least be a little warmer than last week with lows in the high 30s (which beats below freezing) and highs in the high 50s to low 60s. There have been a lot of questions about applying burndowns during cold weather. Continue reading →

This spring has been almost 180 degrees different from last spring.  The dry spring of 2012 allowed a lot of early field work and at this time we were in the middle of corn planting.  This spring we are way behind on applying burndowns due to all the wet weather.  With the crunch to get burndowns out there have been a lot of calls on how best to proceed burning down particularly now with some looking to adjust their crop mix from corn to more cotton. Continue reading →