{"id":1700,"date":"2021-04-28T14:12:31","date_gmt":"2021-04-28T19:12:31","guid":{"rendered":"https:\/\/agrilife.org\/mid-coast-ipm\/?p=1700"},"modified":"2021-04-28T22:25:38","modified_gmt":"2021-04-29T03:25:38","slug":"early-season-cotton-maturity","status":"publish","type":"post","link":"https:\/\/agrilife.org\/mid-coast-ipm\/early-season-cotton-maturity\/","title":{"rendered":"Early Season Cotton Maturity"},"content":{"rendered":"<p>I&#8217;ve been asked by a few growers &#8220;Why is my cotton growing so slowly?&#8221;<\/p>\n<div id=\"attachment_1701\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/days-and-HU-to-maturity.jpg\" rel=\"https:\/\/www.cotton.org\/tech\/ace\/growth-and-development.cfm\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1701\" class=\"wp-image-1701 size-medium\" src=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/days-and-HU-to-maturity-300x198.jpg\" alt=\"\" width=\"300\" height=\"198\" srcset=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/days-and-HU-to-maturity-300x198.jpg 300w, https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/days-and-HU-to-maturity.jpg 622w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-1701\" class=\"wp-caption-text\">From https:\/\/www.cotton.org\/tech\/ace\/growth-and-development.cfm<\/p><\/div>\n<p>The answer is primarily cold temperatures. The table below shows how many days are usually required to get from one stage to another. Notice emergence to first square usually takes 27 to 38 days. The difference between these is how warm or cold temperatures are. <a href=\"https:\/\/www.cotton.org\/tech\/ace\/growth-and-development.cfm\">SOURCE<\/a><\/p>\n<p>I planted a cotton variety trial in Austwell, TX on March 12, or 47 days ago. Today this test is at 6-7 true leaf and I am finding a few squares in the plots. The reason for this delay can be seen in the second table.<a href=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/HU-Accumulation-2021.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1703 alignright\" src=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/HU-Accumulation-2021-251x300.jpg\" alt=\"\" width=\"251\" height=\"300\" srcset=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/HU-Accumulation-2021-251x300.jpg 251w, https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/HU-Accumulation-2021.jpg 550w\" sizes=\"auto, (max-width: 251px) 100vw, 251px\" \/><\/a> Since planting, only 504 heat units have accumulated.<\/p>\n<p>Based on the heat unit accumulation in this table, the latest planted cotton I would expect to find squares is fields that emerged before March 22.\u00a0 The way this year has been, I wouldn&#8217;t be surprised if March 15th planted cotton is not squaring yet. My Calhoun County Cotton was planted on March 26 and averages 4 true-leaves.<\/p>\n<p>Plant maturity is important in pest management. Cotton is susceptible to insects at different times or maturities.<\/p>\n<p>Early season damage windows and the primary insect pests are as follows:<\/p>\n<ul>\n<li>Emergence to 4-5 leaf &#8211; <strong>Thrips<\/strong><\/li>\n<li>1st square to bloom &#8211; <strong>Cotton Fleahopper<\/strong><\/li>\n<li>Bloom to cutout &#8211; <strong>Bollworms<\/strong> and <strong>Stink Bugs<\/strong><\/li>\n<\/ul>\n<div id=\"attachment_1705\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/Cotton-Square.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1705\" class=\"wp-image-1705 size-medium\" src=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/Cotton-Square-e1619636034461-300x259.jpg\" alt=\"\" width=\"300\" height=\"259\" srcset=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/Cotton-Square-e1619636034461-300x259.jpg 300w, https:\/\/agrilife.org\/mid-coast-ipm\/files\/2021\/04\/Cotton-Square-e1619636034461.jpg 543w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-1705\" class=\"wp-caption-text\">Photo By Stephen Biles<\/p><\/div>\n<p>Outside of these times, thrips and cotton fleahoppers rarely if ever cause economic damage. In other words, prior to squaring spraying to control cotton fleahopper has not been found to increase grower profits.<\/p>\n<p>Don&#8217;t make these unnecessary applications. Save it for squaring cotton.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve been asked by a few growers &#8220;Why is my cotton growing so slowly?&#8221; The answer is primarily cold temperatures. The table below shows how many days are usually required to get from one stage to another. Notice emergence to first square usually takes 27 to 38 days. The difference between these is how warm or cold temperatures are. SOURCE I planted a cotton variety trial in Austwell, TX on March 12, or 47 days ago. Today this test is at 6-7 true leaf and I am finding&#8230; <span class=\"read-more\"><a href=\"https:\/\/agrilife.org\/mid-coast-ipm\/early-season-cotton-maturity\/\">Read More &rarr;<\/a><\/span><\/p>\n","protected":false},"author":1158,"featured_media":1708,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[11],"tags":[15,20,16],"class_list":["post-1700","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pest-management-news","tag-cotton","tag-cotton-fleahopper","tag-thrips"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Early Season Cotton Maturity - Mid-Coast IPM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/agrilife.org\/mid-coast-ipm\/early-season-cotton-maturity\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Early Season Cotton Maturity - Mid-Coast IPM\" \/>\n<meta property=\"og:description\" content=\"I&#8217;ve been asked by a few growers &#8220;Why is my cotton growing so slowly?&#8221; The answer is primarily cold temperatures. The table below shows how many days are usually required to get from one stage to another. Notice emergence to first square usually takes 27 to 38 days. The difference between these is how warm or cold temperatures are. SOURCE I planted a cotton variety trial in Austwell, TX on March 12, or 47 days ago. Today this test is at 6-7 true leaf and I am finding... 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