Category Archives: Cotton

Sulfur deficiencies in cotton

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Over the past month, I’ve received several images of sulfur deficiencies in cotton.  While we are quickly approaching a point in which a sulfur fertilizer application will be unable to impact yield in 2019, understanding what a sulfur deficiency looks like may help identify areas which will likely respond to the nutrient during the 2020 season.  This blog covers the characteristics of a sulfur deficiency, presents atmospheric deposition data, and highlights current UT recommendations for the nutrient in cotton production. Continue reading


2019 Xtend Weed Management in Tennessee: We have a Problem

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A year ago this month I posted a blog that was titled “Dicamba in Tennessee: Year 3”.  At that time the Tennessee Department of Agriculture had fielded 45 official dicamba drift complaints.   There were some issues on poor grass control but overall weed control was good. So, what is the status of Xtend weed management in 2019? Continue reading


Thinking About Bollworm Management in Cotton

As of this today (July 24), the bollworm moth flight has not kicked off.  Traditionally, we will start seeing a significant increase next week or the first week of August. This year, I expect to see a gradual increase but an extended flight because of the wide range of corn planting dates.

Bollworm resistance to some Bt toxins (Cry1 and Cry2) in Bt cotton is now well documented Continue reading


Managing growth after Hurricane Barry

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The calendar says late July, but the chill on the wind this morning made it seem like we had to be deep enough into the football schedule for a solid SEC football match-up on Saturday.  This blog covers a few points concerning cotton growth under mid-season daytime and nighttime temperatures between 85 and 65 following excessive rainfall. Continue reading


Cotton Diseases – what to be on the lookout for

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As seen in previous news.utcrops.com blog articles both insects and weather are impacting cotton (Crunch Time for Cotton Insects and Cotton response to saturated soils in West TN), and this article discusses the diseases (fungal, bacterial, and viral pathogens) that may also be impacting cotton. Continue reading