In fields where dicamba and 2,4-D are no longer effectively controlling Palmer amaranth what are some options to help manage this weed? We conducted research at several locations this year trying to answer this question.
Category Archives: Soybean
REMINDER: 2021 Soybean Scout Schools
UT’s Soybean Scout Schools will be held in July (see details below). Continue reading
Top Bean Soybean Yield Contest in 2021
Once again, eligible soybean producers will have the opportunity to participate in the Tennessee Top Bean high yield contest. Continue reading
Dicamba and 2,4-D: No longer “Palmer amaranth Herbicides” in Some Fields
For the past week we have been getting reports along with a good many pictures of Palmer amaranth escaping dicamba application/s from retailers and consultants scouting fields (Picture 1 and 2). As one retailer so aptly described it today “there are spots in fields where the lack of Palmer control is frightening”. Continue reading
More Reports of Barnyardgrass/Junglerice Escaping Glyphosate and/or Clethodim
There have been several reports last week of multiple glyphosate and/or clethodim applications not controlling barnyardgrass or junglerice. We really do not know the precise reasons for the lack of control in any given field but based on previous research and past experience there are three likely causes. Continue reading
Palmer amaranth Control Options now that June 30 Dicamba Cut-Off in Soybean has Arrived
It is July 1, 2021 so the June 30 cut-off to spray dicamba over Xtend soybean has passed. The questions of the week have been once July has arrived what alternatives are there to control Palmer amaranth in soybean? Continue reading
Reminder: UT Weed Tour (This Wednesday June 16, 2021)
JACKSON, Tenn. – The University of Tennessee Institute of Agriculture will host the annual Weed Tour on Wednesday, June 16 at the West Tennessee AgResearch and Education Center. The guided tour will feature 60 weed management research tests in corn, soybean and cotton as well as a demonstration of herbicide symptomology. Continue reading
Managing Dicamba or Enlist One Resistant Palmer Amaranth
Judging from research tests and walking a few farmers’ fields many of the PRE applied herbicides in soybean and cotton played out about a week or so ago. Timing is everything on trying to do the best job on Palmer amaranth that has broken through the PREs. With respect to Palmer amaranth that has low-level dicamba or 2,4-D resistance (2 to 3x), timing is even more important. Moreover, herbicide selection is also critical in controlling resistant Palmer. Continue reading