{"id":2640,"date":"2026-09-21T14:06:02","date_gmt":"2026-09-21T18:06:02","guid":{"rendered":"https:\/\/site.extension.uga.edu\/tiftcoag\/?p=2640"},"modified":"2026-09-21T14:06:03","modified_gmt":"2026-09-21T18:06:03","slug":"cotton-defoliation-9-21-2026","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/tiftcoag\/2026\/09\/cotton-defoliation-9-21-2026\/","title":{"rendered":"Cotton Defoliation 9\/21\/2026"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Recipe for the week:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3.2 &#8211; 4 oz\/acre thidiazuron<\/li>\n\n\n\n<li>8-12 oz\/acre tribufos (higher towards the end of the week)<\/li>\n\n\n\n<li>32-42 oz\/acre ethephon (higher towards the end of the week)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Looks like we\u2019ve got a slight change in the weather this week, which may mean adjusting our defoliation plans. For the most part, we\u2019ll go from the low 90s into the upper 80s through Wednesday, then temperatures look to drop into the upper 70s. By Friday, some places may even see lows in the 60s. Don\u2019t let that cool-down fool you, though. If the forecast holds, it looks like we\u2019ll warm back up some next week. As most of you know, cotton is a lot easier, and usually cheaper, to defoliate when it\u2019s warm. Once temperatures cool down, we may need higher rates and potentially a little more patience between application and harvest.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, if it were my cotton, here\u2019s how I\u2019d approach this week:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If I had cotton ready to defoliate and was ready to pick it, I\u2019d try to spray today (Monday) or tomorrow (Tuesday).<\/li>\n\n\n\n<li>If I couldn\u2019t get to it by then, I\u2019d probably hold off and see what next week brings.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Why wait? Mainly because the recipe I\u2019d use Monday or Tuesday would be different from what I\u2019d be comfortable using Thursday or Friday. Then, if temperatures warm back up like they\u2019re supposed to next week, I\u2019d probably go back closer to my original recipe. Today, WALB says there\u2019s also a small chance of rain throughout the week, so keep that in the back of your mind as you make plans. If I decided I needed to spray Thursday or Friday in the cooler weather, I\u2019d probably start looking at a Ginstar-type product. I\u2019d be thinking somewhere around 6 to 8 oz\/acre plus ethephon. Adding a little thidiazuron wouldn\u2019t hurt either, especially in fields with a lot of regrowth.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One thing I&#8217;d like to note is water volume and droplet size; both are important. When it comes to defoliation, more water is generally your friend:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>10 GPA is better than 7.<\/li>\n\n\n\n<li>15 GPA is better than 10.<\/li>\n\n\n\n<li>20 GPA is better than 15.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Since a lot of folks are already set up to run 15 GPA, that\u2019s probably the sweet spot I\u2019d shoot for. Larger droplets, like what we get with some dicamba tips, can make good coverage harder and increase the chances of defoliation issues. Increasing your water volume can help make up for some of that. Whatever you decide to do this week, don\u2019t forget the lessons we learned from UPW; these products need to stay on target just like everything else. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Recipe for the week: Looks like we\u2019ve got a slight change in the weather this week, which may mean adjusting our defoliation plans. For the most part, we\u2019ll go from the low 90s into the upper 80s through Wednesday, then temperatures look to drop into the upper 70s. By Friday, some places may even see [&hellip;]<\/p>\n","protected":false},"author":277,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2640","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/posts\/2640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/users\/277"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/comments?post=2640"}],"version-history":[{"count":1,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/posts\/2640\/revisions"}],"predecessor-version":[{"id":2641,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/posts\/2640\/revisions\/2641"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/media?parent=2640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/categories?post=2640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/tags?post=2640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}