{"id":1167,"date":"2020-09-22T13:56:06","date_gmt":"2020-09-22T17:56:06","guid":{"rendered":"https:\/\/site.extension.uga.edu\/tiftcoag\/?p=1167"},"modified":"2020-09-22T14:02:49","modified_gmt":"2020-09-22T18:02:49","slug":"cotton-defoliation","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/tiftcoag\/2020\/09\/cotton-defoliation\/","title":{"rendered":"Cotton Defoliation"},"content":{"rendered":"\n<p><strong>Timing and Methods:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>60 to 75% open bolls (only 60 for uniform crop) <\/li><li>NACB (Nodes Above Cracked Boll) \u2013 4 or less (around 3 days per node)<ul><li>Locate uppermost 1st position cracked boll, count up to uppermost harvestable boll (BOLL FOR HARVEST, NOT NECESSARILY UPPERMOST)<\/li><\/ul><\/li><li>Sharp Knife \u2013 cotton strings when boll is cut \u2013Seed are fully developed (brown coat &amp; cotyledons)<ul><li>Mature bolls difficult to cross-section<\/li><li>Tan to brown seed coat correlates with mature boll<\/li><li>Fiber should \u201cstring\u201d<\/li><\/ul><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"243\" src=\"https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cotton-Cross-section.jpg\" alt=\"\" class=\"wp-image-1168\" srcset=\"https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cotton-Cross-section.jpg 1024w, https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cotton-Cross-section-300x71.jpg 300w, https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cotton-Cross-section-768x182.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>Harvest Aids:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Two general types: <ul><li>Herbicidal defoliants<\/li><li>Hormonal defoliants <\/li><\/ul><\/li><li>Both cause the release of ethylene and assist in leaf defoliation<\/li><li>20 GPA is best <\/li><li>Herbicidal Defoliants<ul><li>Tribufos (Folex)<ul><li>Injures leaf below the cuticle, causing stress which stimulates ethylene production<\/li><\/ul><\/li><li>PPO INHIBITBITING HERBICIDES <ul><li>Carfentrazone (Aim), Pyrafluefen ethyl (ET)<ul><li>Destructs cell membranes, causing ethylene production<\/li><\/ul><\/li><li>Flumiclorac (Resource) <\/li><li>Flutiacet-methyl (Blizzard)<\/li><\/ul><\/li><\/ul><\/li><li>Hormonal Defoliants<ul><li>Ethephon (Prep, etc.)<ul><li>Increases production of ethylene, leading to leaf drop<\/li><li>Excellerated boll opening<ul><li>Finish 6 Pro \u2013 ethephon + cyclanilide<\/li><li>FirstPick \u2013 ethephone + urea sulfate<\/li><\/ul><\/li><\/ul><\/li><li>Thidiazuron (Freefall)<ul><li>Enhances the production of ethylene and inhibits auxin transport<\/li><li>Inhibits regrowth<ul><li>Ginstar \u2013 thidiazuron + diuron<\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/3way-Defoliant-new.jpg\" alt=\"\" class=\"wp-image-1170\" width=\"709\" height=\"398\" srcset=\"https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/3way-Defoliant-new.jpg 1024w, https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/3way-Defoliant-new-300x169.jpg 300w, https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/3way-Defoliant-new-768x432.jpg 768w\" sizes=\"auto, (max-width: 709px) 100vw, 709px\" \/><\/figure>\n\n\n\n<p><strong>Rain-free Requirements:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Tdz \u2013 24 hours<\/li><li>Ginstar \u2013 12 hours<\/li><li>Aim \u2013 8 hours<\/li><li>Display \u2013 8 hours<\/li><li>Ethephon \u2013 6 hours<\/li><li>Finish \u2013 6 hours<\/li><li>Folex \u2013 1 hour<\/li><li>Et \u2013 1 hour<\/li><li>Sharpen \u2013 1 hour<\/li><li>Paraquat \u2013 30 min.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1173 alignleft\" src=\"https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cracking-Boll-300x232.jpg\" alt=\"\" width=\"300\" height=\"232\" srcset=\"https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cracking-Boll-300x232.jpg 300w, https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cracking-Boll-768x593.jpg 768w, https:\/\/site.extension.uga.edu\/tiftcoag\/files\/2020\/09\/Cracking-Boll.jpg 956w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Its time to start defoliating cotton. Here are some tips and reminders about defoliants.<\/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-1167","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/posts\/1167","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=1167"}],"version-history":[{"count":3,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/posts\/1167\/revisions"}],"predecessor-version":[{"id":1174,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/posts\/1167\/revisions\/1174"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/media?parent=1167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/categories?post=1167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/tiftcoag\/wp-json\/wp\/v2\/tags?post=1167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}