All posts by Tyson Raper, Cotton & Small Grains Specialist

Estimating lint yield from boll counts

I’ve resisted writing this post for 5 years because I think estimating lint yield from boll counts only provides enough insight to differentiate between poor, decent and good cotton.  Still, I understand the temptation to count one’s chickens before they hatch.  In this blog, I highlight a few issues with estimates and define the number of bolls required to produce one and two bales at various row spacings and patterns. Continue reading


‘Impacts of the Trade War on the U.S. Cotton Sector’ by Dr. Andrew Muhammad and Dr. Aaron Smith

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Dr. Andrew Muhammad and Dr. Aaron Smith published an Extension article earlier this week entitled “Impacts of the Trade War on the U.S. Cotton Sector.”  I found the article to be extremely informative and while we typically focus on production issues, felt it was appropriate to share here.  You can access the publication by clicking the image or  following this hyperlink: https://extension.tennessee.edu/publications/Documents/W835.pdf

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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


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 response to saturated soils in West TN

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Authors: Avat Shekoofa and Tyson Raper

Reports of ‘sudden wilt’, ‘parawilt’, or ‘wet wilt’ began Wednesday afternoon and continued through Thursday. This article briefly explains the phenomena and discusses management during recovery. 

Fig. 1: Prolonged periods of saturation resulted in wilt in many areas of West Tennessee following Hurricane Barry. 18 July 2019

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Corn and Cotton Producers’ Prevented Planting Decision

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Federal crop insurance programs have a prevented planting provision that can protect producers from the financial losses and risks associated with not being able to plant the intended crop within the desired planting period. Revenue Protection, Revenue Protection with Harvest Price Exclusion, Yield Protection, and Area Risk Protection insurance policies pay indemnities if producers were unable to plant the insured crop by a designated final planting date or within any applicable late planting period due to natural causes, typically drought or excess moisture. This post highlights several components of those provisions and provides a few examples.  

Kevin Adkins, Graduate Research Assistant, Department of Agricultural and Resource Economics, University of Tennessee

**Christopher N. Boyer, Associate Professor, Department of Agricultural and Resource Economics, University of Tennessee 302-I Morgan Hall Knoxville, TN 37996 Phone: 865-974-7468 Email: cboyer3@utk.edu **Corresponding author Continue reading