The very wet May has led to rapid degradation of the PRE applied herbicides in cotton. In our tests at Jackson that were planted 21 days ago all the PRE applied herbicides have broken. Some broke very quickly after application while others held on a little better, even with all the rain. Continue reading
There have been some Gramoxone burndown applications that have left some Palmer amaranth survivors. This happens to some extent every year. The cause of the problem is almost always coverage. Continue reading
The blog on inconsistent dicamba performance on Palmer amaranth has caused some follow up questions.
Is there any difference between Engenia, Xtendimax and Clarity for actual Palmer amaranth control? NO. I know from repeated research with all three that they all perform fairly well on a 1 to 4” Palmer amaranth. They all often need follow up applications on Palmer that is larger than 4”.
Are PRE applied herbicides needed in Xtend soybeans? YES. The folks to date who have had issues with dicamba performance were not using any PRE applied herbicides. It is hard to get good coverage in those thick mats of pigweeds where PREs have not been used.
In a March blog I noted the lack of horseweed (marestail) in many fields but thought an April germination event of this weed could come late to the party and pose a problem. On occasion I make a good guess, as that has clearly been the case. Continue reading
The University of Tennessee Cotton Insect Scout School is scheduled for Friday, May 26 at the West Tennessee Research and Education Center in Jackson. The address in 605 Airways Blvd, Jackson TN. There is no fee, and preregistration is not required. Registration begins at 8:00 AM with the program starting at 8:30. Content will include hands-on training with an optional ‘go-to-the-field session’ after a box lunch. Topics covered will include cotton development, identification of insects (and their damage) weed and diseases and their damage, and weed identification.
The worst kept secret in West Tennessee has been the reports of poor Palmer amaranth control with Engenia in a field in Fayette County. Continue reading
The University of Tennessee Cotton Insect Scout School is scheduled for Friday, May 26 at the West Tennessee Research and Education Center in Jackson. The address in 605 Airways Blvd, Jackson TN. There is no fee, and preregistration is not required. Registration begins at 8:00 AM with the program starting at 8:30. Content will include hands-on training with an optional ‘go-to-the-field session’ after a box lunch. Topics covered will include cotton development, identification of insects (and their damage) weed and diseases and their damage, and weed identification.
Judging by calls there is a good deal of frustration with the lack of Caparol, Cotoran and Diuron. A lot of folks are scrambling trying to come up with a Plan B or even a Plan C as cotton planters roll. Continue reading