The short answer to this question is yes for the vast majority of fields! Terminating insecticide application is always a tough call and even harder this year because so many fields are late Continue reading
All posts by Scott Stewart, West TN Research & Education Center
Soybean Insect Update
Soybean insect pressure continues to be pretty mild, with insecticide application mostly being applied for stink bugs. Below are some comments on what to expect during the next several weeks. As corn harvest begins, don’t forget that this is the same window where insect infestations are most likely. Continue reading
DD60s – Accumulation Since August 15
I’ve had a request to do a running total of DD60 accumulations beginning August 15th. As much of our crop did not reach cutout (NAWF=5) by August 15th, this becomes our default last effective bloom date Continue reading
A few reminders about insect control in cotton and soybean
Cotton: There are now a few mentions of bollworms being found in some cotton fields, although there have been no reports of high infestation levels. The suggested treatment threshold is 4 “surviving” larvae per 100 plants on Bt cotton fields. Typically, we do not Continue reading
Cotton Insecticide Termination, Defoliation and Weather Rules
Crop Maturity Based Insecticide Termination Rules. For a normally maturing crop, the standard suggestion is to terminate insecticide applications for plant bugs, stink bugs and bollworm at NAWF5 + 350 DD60s. The reality is Continue reading
What Next for Plant Bugs?
I’m harping on the same subject, but virtually the only question I am receiving is “what should I spray next for plant bugs in cotton”? Granted, there are stink bugs in the system also, but these are more easily controlled and Continue reading
Cotton Maturity Lags
While we have having great weather for corn and soybean, the cool and cloudy conditions have not helped push our cotton crop to maturity. It’s not too early to think about defoliation, or more specifically, how to help our crop get mature enough to Continue reading
Controlling Plant Bugs – Don’t Overthink It
We’ve done a lot of insecticide evaluation in the last two weeks, and the common theme is that our traditionally best treatments are still providing good control. Treatments of Bidrin (6-8 oz), Acephate/Orthene (0.75 lb), Transform (1.5 oz) are top performers (providing closer to 75-80% control). Other top performers are Continue reading