Category Archives: Soybean

08 Sep 2020

Good Time to Scout for Weeds

08 Sep 2020
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Pigweed that has escaped dicamba + S-metolachlor + glyphosate on 4 to 6″ weeds followed 20 days later with dicamba + S-metolchlor + glyphosate: Montgomery County, TN. Sept 1, 2020

Some have been concerned about losing dicamba due to court or EPA rulings. Everyone should be more concerned about losing dicamba and 2,4-D to Charles Darwin’s theory. Weeds developing herbicide resistance has caused the loss of many more herbicides than anything a court or the EPA has ever done. It’s not even a close race.

This is particularly true for Palmer amaranth. The newest development is that Palmer amaranth has evolved dicamba resistance here in Tennessee. We are in the beginning stages of Palmer amaranth, yet again, becoming a major problem due to the loss of a herbicides’ utility on that weed. Continue reading →

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13 Aug 2020

Cotton and Soybean Insect Update: Is it a Wormy Year or Not?

13 Aug 2020
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Corn earworm (bollworm) moth

Sometimes there is no substitute for scouting. Spraying based on rumor or what your neighbor does will get you in trouble (or waste money). I predicted a relatively large corn earworm (bollworm) moth flight, but the average trap catches don’t support that. Having said that, there are definitely pockets of bollworms in late soybean and more widespread issues in cotton. Cotton maturity is all over the board depending on planting date, variety, and field conditions. The most mature cotton is Continue reading →

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30 Jul 2020

Bollworm Management in the Coming Weeks

30 Jul 2020
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Bollworm feeding on boll

Although  current moth activity remains relatively low, I’m expecting a peak of moth activity sometime beginning around August 5th through 10th. Bollworm (a.k.a., corn earworm) poses a significant threat to cotton and soybean, and particularly late planted soybean that are still flowering when the flight arrives. Below are some thoughts on managing for this troubling pest. Continue reading →

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