All posts by Clay Perkins Graduate Research Assistant

Concerns About Poor Palmer Amaranth Control with Dicamba

Palmer Amaranth Escaping 2 Applications of Engenia + Roundup PM. Crockett County TN. Pic taken 14 Days after 2nd Application

Calls continue to come in on concerns about poor Palmer amaranth control after a dicamba application. More than a few have reported that Palmer amaranth has survived multiple dicamba + glyphosate applications (Example above). Continue reading


Junglerice Control after Initial Glyphosate + Dicamba Application

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Glyphosate (32 oz) – 21 DAA

Questions continue to be asked on how to best manage junglerice, barnyardgrass and goosegrass in cotton and soybean. Research earlier this spring looking at grass control after an initial glyphosate + dicamba application showed that if a follow-up glyphosate application was applied 7 days later better than 90% junglerice control could be achieve (data below). Continue reading


Results of UT Studies on Reasons for Junglerice Becoming a Major Pest in Tennessee Xtend Cotton and Soybean Acres

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Junglerice Escaping: Glyphosate+Engenia /fb Glyphosate+Engenia+Clethodim

The results of some studies UT Extension has done to try to determine why junglerice has become a major weed pest in Tennessee Xtend cotton and soybean acres has provided some insights. This research was in-part supported by the Tennessee Soybean Promotion Board and from Cotton Incorporated. Continue reading


Junglerice/Barnyardgrass Starting to Emerge in Tennessee

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Emerging Junglerice

We have started to notice Junglerice/Barnyardgrass emergence here in West Tennessee on Tuesday (April 28th). The key way to ID junglerice at this young stage is the purple base and flat stem. As the grass matures, you will start to notice some purple striping on the leaves as well as not having a ligule.

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Dicamba Tank mixing with Glyphosate and/or Clethodim Effect on Junglrice Control

Xtend Cotton in a Junglerice field

The call of the spring and now well into the summer is on failed attempts to control junglerice and goosegrass in Xtend crops. The most recent rash of calls have been from very frustrated folks who have not controlled one of those grass species even after three applications of glyphosate and/or clethodim. Most of these failed applications are coming from tank mixing Engenia or XtendiMax in the tank with either glyphosate, clethodim, or both. Continue reading