This is now a critical time for Palmer amaranth control in soybean and cotton. Judging by rating our pre applied herbicide performance in those crops as well as calls from folks walking fields it is very apparent that pigweed is starting to break through. Continue reading
All posts by Larry Steckel, Extension Weed Specialist
Cotton and Soybean Injury From Pre Applied Herbicides
Walked a few fields and gotten more calls on pre emergence herbicide injury to cotton and soybean. This does not come as a surprise given the “Blackberry Winter” we had last week coupled with heavy rain. Continue reading
Management of Large Palmer amaranth In Corn Approaching the Atrazine Cut-Off
Judging by our research here as well as phone calls from folks walking corn fields it is very apparent that pretty much any PRE applied herbicide in corn has given out. Even some of the PRE applied herbicides that traditionally have provided consistently long weed control like Lexar or Bicep have clearly given out about 25 days after application. In other instances, I have had folks report that no PRE was applied to the corn and Palmer amaranth is good size.
Everyone is well behind with respect to spraying. Way too many windy days and now a very wet Wednesday will keep sprayers out of the field until next week. With that in mind there will be many fields of corn where both the corn and the Palmer amaranth will be large at time of spraying. What are some good management strategies for this situation? Continue reading
Considerations When Switching to Earlier Cotton Varieties
What a difference a year makes! This time last year we had almost no cotton planted and really only got a good start on May 20th. As of May 14th, this year, my best guess is that we are well over 85% planted state wide with many folks finished. Continue reading
Windy Conditions Preventing Pre Applied Herbicides
The weather over the last 10 days has been ideal for planting cotton and soybean. In many cases cotton and soybean have emerged in 5 days after planting. Unfortunately the consistent strong wind has made it very difficult to spray burndowns and pre emerge herbicides. Continue reading
Controlling Ryegrass Late
Ryegrass questions have become much more prevalent this week. Continue reading
Destroying a Poor Stand of Corn and Replanting Back to Corn
There have been reports of some fields of corn that due to flooding have an insufficient stand to keep. There are several options to control a thin corn stand and replant back to corn. Continue reading
Late-Season Burndown Options for Cotton and Soybean
A large general rain yesterday and back to winter temperatures this morning keeps field progress in slow motion again this spring. As soon as the weather permits corn planting will take priority followed by late burndown in some fields. Continue reading