Category Archives: Cotton

Bollworm Management in the Coming Weeks

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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Virtual Milan No-till Field Day … Available Now!

Follow the link below to experience the 2020 Milan No-till Field Day at your own pace! You can watch an entire tour by clicking on its name, or just one presentation by clicking on a specific title.

Please note, all links will open in a new tab. Closed captions are available by clicking the “CC” button on the right side of the video’s play bar.

Research Tours

 

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Insect Update from the Trenches

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Corn earworm (bollworm) moth

Cotton – Although plant bug populations remain lighter that usual, we are now seeing treatment levels in many fields. It’s time to switch to the drop cloth for best results. The treatment threshold for tarnished plant bug beginning at first flower is 3 tarnished plant bugs per drop cloth. You should maintain this threshold until about NAWF5+250 DD60s, at which time Continue reading

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Cotton growth stages and water requirements

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While May brought a great deal of rain, June and July have been dry for much of West Tennessee.  We are already beginning to see the impacts on cotton growth and development.  While we still have very good cotton yield potential, we need a good soaking rain in the coming weeks.  This blog highlights impacts of drought on cotton during the growth stage, provides general information on scheduling irrigation and highlights a few scheduling methods.

Ideally, the soil profile needs to provide sufficient plant available water throughout the blooming period. As we begin to move towards the permanent wilting point during the blooming window, fruit retention may begin to decline and maturity may be delayed.  If a rainfall or irrigation event does not ameliorate the stress, yield penalties may develop.  Cotton plants are particularly susceptible to drought during the early boll development stages which immediately follow flowering (Table 1). Keeping soil profile at or near field capacity at early bloom through peak bloom will support earliness and maximize yields.

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Insecticide Concoctions for Plant Bugs in Blooming Cotton

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Although pressure is currently below average, it is increasing, which is to be expected as we enter the early blooming window. We have limited but good options to control plant bugs in blooming cotton. I often tell folks that if you call me once bloom starts, I’ll often only mention 4-5 products, sometimes in combination. Those include Acephate/Orthene, Diamond, Transform, and Bidrin. Vydate also gets and honorable mention. These are the core products suggested for mid-season plant bug control. Below are some treatment options I like, in no particular order. However, Continue reading

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UT Extension Hires New Farm Management Specialist

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UT Extension is happy to welcome Mr. Christopher R. Narayanan to an Area Farm Management Specialist position that covers eight counties in West Tennessee. Chris joined a team of nine area specialists that serve Tennessee farmers and families with expertise in farm and financial management on July 1st. Continue reading

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