Category Archives: Diseases

2016 Mid-South Cotton Defoliation Guide

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defolguideTennessee’s 2016 cotton crop is rapidly maturing and many of our acres will receive the first shot of defoliant in the next week.  There are many factors to consider in determining timing, products and rates.   In an effort to outline these decisions and provide harvest aid recommendations for the Mid-South, the 2016 Mid-South Cotton Defoliation Guide has just been updated and is now available online.   To access the guide, click the image above or the included link.  Please keep in mind that this was compiled as a regional guide and should be used in conjunction with your previous experiences. Continue reading


Target Spot and Boll Drop – The Knowns and Unknowns

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Authored by Heather M. Kelly, Extension Plant Pathologist and Tyson Raper, Cotton and Small Grains Specialist

The abnormally warm and wet conditions in the Mid-South during August have contributed to the highest level of target spot-driven defoliation in commercial fields to date. Still, the majority of Tennessee’s cotton will not see a yield penalty from the disease due to a late onset and very low levels of defoliation.  Continue reading


Cotton turning . . . too soon?

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IMG_4307The call of the week (beyond target spot) has concerned cotton ‘turning’.  In the dictionary of cotton rhetoric, ‘turning’ refers to the shift in canopy color from dark green to shades of yellow and red, or senescence, which usually coincides with the second or third week of football season.  Over the past week, the crop has definitely made a turn towards finishing out the season .  . .  and kickoff for the first game is still a few days away. The general concern is this change has occurred much more rapidly and earlier than we would like.  So are we looking at premature senescence and yield penalties? Continue reading