{"id":2307,"date":"2024-04-30T14:16:24","date_gmt":"2024-04-30T19:16:24","guid":{"rendered":"https:\/\/agrilife.org\/mid-coast-ipm\/?p=2307"},"modified":"2024-04-30T14:40:35","modified_gmt":"2024-04-30T19:40:35","slug":"squaring-cotton-and-herbicide-damage","status":"publish","type":"post","link":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/","title":{"rendered":"Squaring Cotton and Herbicide Damage"},"content":{"rendered":"

\"\"<\/a>Cotton maturity ranges from cotyledon to 1\/2-grown square. Some fields need to be scouted for thrips, while others are beyond the thrips damage window and need to be checked for cotton fleahopper.<\/p>\n

Seedling cotton should be monitored for thrips<\/strong> until 5 or 6 true leaves are on the plants. I usually think the growing conditions in late April are good enough to overcome thrips feeding, but some fields have high numbers of thrips that are causing significant damage.\"\"<\/a><\/p>\n

Thrips are slender, straw-colored insects about 1\/15 inch long, with piercing-sucking mouthparts. Adults are winged and capable of drifting long distances in the wind. They attack leaves, leaf buds, and very small squares, causing a silvering of the lower leaf surface, deformed or blackened leaves, and loss of the plant terminal.<\/p>\n

Treat for thrips when there are more than 2 thrips per true leaf and feeding injury is noticeable.<\/p>\n

\"\"<\/a>

Cotton Fleahopper. Photo by S. Biles<\/p><\/div>\n

Once cotton is past 5-6 true leaves there are usually squares on the plant. The cotton fleahopper<\/strong> is the primary cause of square losses and their presence should be monitored. Cotton fleahopper feeding on small squares (< matchhead size) can result in the abscission of the square.\u00a0 From my field scouting, I have seen square sets above 90% square retention which is evidence of either good management or low populations.<\/p>\n

Recent research has caused me to adjust my economic threshold down from 15 fleahoppers per 100 plants to 10 per 100 plants.\u00a0 The crop is usually safe after the first week of bloom.<\/p>\n

More information of cotton insect management can be found HERE. managing-cotton-insects-in-texas<\/a><\/p>\n

Herbicide Injury<\/h3>\n

Herbicide injury has been found in a number of fields in Victoria County. Much of this appears to be symptoms of hormone type herbicides. Research conducted by Extension Agronomist across Texas has found it difficult to predict the effect of 2,4-D injury on cotton based on the severity of symptomology.<\/p>\n

\"\"<\/a>

Hormone Herbicide Symptoms. Photo by S. Biles<\/p><\/div>\n

Sometimes little injury may cause significant yield losses while greater amounts of injury did not affect yield. Younger cotton tended to be more adversely effected than older cotton, and poor growing conditions following the herbicide exposure may increase the effect on yield.\u00a0 But these results were not consistent from trial to trial or across years.<\/p>\n

In short, we will have to wait and see what effect the injury has on the field and each field may respond differently.<\/p>\n

 <\/p>\n

Monday morning<\/strong><\/p>\n

Crop Scouting Meeting<\/strong><\/p>\n

When: 9 am, Monday, May 6<\/p>\n

Where: FM 1679, just south of Sanders Rd.<\/p>\n

We will be looking at how to scout for cotton fleahoppers, plant growth regulators, and other topics.<\/p>\n","protected":false},"excerpt":{"rendered":"

Cotton maturity ranges from cotyledon to 1\/2-grown square. Some fields need to be scouted for thrips, while others are beyond the thrips damage window and need to be checked for cotton fleahopper. Seedling cotton should be monitored for thrips until 5 or 6 true leaves are on the plants. I usually think the growing conditions in late April are good enough to overcome thrips feeding, but some fields have high numbers of thrips that are causing significant damage. Thrips are slender, straw-colored insects about 1\/15 inch long, with… Read More →<\/a><\/span><\/p>\n","protected":false},"author":1158,"featured_media":2311,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[11],"tags":[20,49,16],"class_list":["post-2307","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pest-management-news","tag-cotton-fleahopper","tag-herbicides","tag-thrips"],"acf":[],"yoast_head":"\nSquaring Cotton and Herbicide Damage - 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\/squaring-cotton-and-herbicide-damage\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Squaring Cotton and Herbicide Damage - Mid-Coast IPM\" \/>\n<meta property=\"og:description\" content=\"Cotton maturity ranges from cotyledon to 1\/2-grown square. Some fields need to be scouted for thrips, while others are beyond the thrips damage window and need to be checked for cotton fleahopper. Seedling cotton should be monitored for thrips until 5 or 6 true leaves are on the plants. I usually think the growing conditions in late April are good enough to overcome thrips feeding, but some fields have high numbers of thrips that are causing significant damage. Thrips are slender, straw-colored insects about 1\/15 inch long, with... Read More →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/\" \/>\n<meta property=\"og:site_name\" content=\"Mid-Coast IPM\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-30T19:16:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-30T19:40:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2024\/04\/20240419_184811158_iOS-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1920\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Stephen Biles\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Stephen Biles\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/\"},\"author\":{\"name\":\"Stephen Biles\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/#\\\/schema\\\/person\\\/1cddeaeeb6a5905e9460fd517438c7cc\"},\"headline\":\"Squaring Cotton and Herbicide Damage\",\"datePublished\":\"2024-04-30T19:16:24+00:00\",\"dateModified\":\"2024-04-30T19:40:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/\"},\"wordCount\":448,\"image\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/files\\\/2024\\\/04\\\/20240419_184811158_iOS-scaled.jpg\",\"keywords\":[\"Cotton Fleahopper\",\"Herbicides\",\"Thrips\"],\"articleSection\":[\"Pest Management News\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/\",\"url\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/\",\"name\":\"Squaring Cotton and Herbicide Damage - Mid-Coast IPM\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/files\\\/2024\\\/04\\\/20240419_184811158_iOS-scaled.jpg\",\"datePublished\":\"2024-04-30T19:16:24+00:00\",\"dateModified\":\"2024-04-30T19:40:35+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/#\\\/schema\\\/person\\\/1cddeaeeb6a5905e9460fd517438c7cc\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/#primaryimage\",\"url\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/files\\\/2024\\\/04\\\/20240419_184811158_iOS-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/files\\\/2024\\\/04\\\/20240419_184811158_iOS-scaled.jpg\",\"width\":2560,\"height\":1920,\"caption\":\"Hormone Herbicide Symptoms. Photo by S. Biles\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/squaring-cotton-and-herbicide-damage\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Squaring Cotton and Herbicide Damage\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/#website\",\"url\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/\",\"name\":\"Mid-Coast IPM\",\"description\":\"Pest Management Answers for Crops on the Texas Coast\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/agrilife.org\\\/mid-coast-ipm\\\/#\\\/schema\\\/person\\\/1cddeaeeb6a5905e9460fd517438c7cc\",\"name\":\"Stephen Biles\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/fab17846235144ebee93c291e3a0ee7ec5631a0229bf2a801f7dce42b8fa430d?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/fab17846235144ebee93c291e3a0ee7ec5631a0229bf2a801f7dce42b8fa430d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/fab17846235144ebee93c291e3a0ee7ec5631a0229bf2a801f7dce42b8fa430d?s=96&d=mm&r=g\",\"caption\":\"Stephen Biles\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Squaring Cotton and Herbicide Damage - Mid-Coast IPM","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/","og_locale":"en_US","og_type":"article","og_title":"Squaring Cotton and Herbicide Damage - Mid-Coast IPM","og_description":"Cotton maturity ranges from cotyledon to 1\/2-grown square. Some fields need to be scouted for thrips, while others are beyond the thrips damage window and need to be checked for cotton fleahopper. Seedling cotton should be monitored for thrips until 5 or 6 true leaves are on the plants. I usually think the growing conditions in late April are good enough to overcome thrips feeding, but some fields have high numbers of thrips that are causing significant damage. Thrips are slender, straw-colored insects about 1\/15 inch long, with... Read More →","og_url":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/","og_site_name":"Mid-Coast IPM","article_published_time":"2024-04-30T19:16:24+00:00","article_modified_time":"2024-04-30T19:40:35+00:00","og_image":[{"width":2560,"height":1920,"url":"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2024\/04\/20240419_184811158_iOS-scaled.jpg","type":"image\/jpeg"}],"author":"Stephen Biles","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Stephen Biles","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/#article","isPartOf":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/"},"author":{"name":"Stephen Biles","@id":"https:\/\/agrilife.org\/mid-coast-ipm\/#\/schema\/person\/1cddeaeeb6a5905e9460fd517438c7cc"},"headline":"Squaring Cotton and Herbicide Damage","datePublished":"2024-04-30T19:16:24+00:00","dateModified":"2024-04-30T19:40:35+00:00","mainEntityOfPage":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/"},"wordCount":448,"image":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/#primaryimage"},"thumbnailUrl":"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2024\/04\/20240419_184811158_iOS-scaled.jpg","keywords":["Cotton Fleahopper","Herbicides","Thrips"],"articleSection":["Pest Management News"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/","url":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/","name":"Squaring Cotton and Herbicide Damage - Mid-Coast IPM","isPartOf":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/#website"},"primaryImageOfPage":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/#primaryimage"},"image":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/#primaryimage"},"thumbnailUrl":"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2024\/04\/20240419_184811158_iOS-scaled.jpg","datePublished":"2024-04-30T19:16:24+00:00","dateModified":"2024-04-30T19:40:35+00:00","author":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/#\/schema\/person\/1cddeaeeb6a5905e9460fd517438c7cc"},"breadcrumb":{"@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/#primaryimage","url":"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2024\/04\/20240419_184811158_iOS-scaled.jpg","contentUrl":"https:\/\/agrilife.org\/mid-coast-ipm\/files\/2024\/04\/20240419_184811158_iOS-scaled.jpg","width":2560,"height":1920,"caption":"Hormone Herbicide Symptoms. Photo by S. Biles"},{"@type":"BreadcrumbList","@id":"https:\/\/agrilife.org\/mid-coast-ipm\/squaring-cotton-and-herbicide-damage\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/agrilife.org\/mid-coast-ipm\/"},{"@type":"ListItem","position":2,"name":"Squaring Cotton and Herbicide Damage"}]},{"@type":"WebSite","@id":"https:\/\/agrilife.org\/mid-coast-ipm\/#website","url":"https:\/\/agrilife.org\/mid-coast-ipm\/","name":"Mid-Coast IPM","description":"Pest Management Answers for Crops on the Texas Coast","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/agrilife.org\/mid-coast-ipm\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/agrilife.org\/mid-coast-ipm\/#\/schema\/person\/1cddeaeeb6a5905e9460fd517438c7cc","name":"Stephen Biles","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/fab17846235144ebee93c291e3a0ee7ec5631a0229bf2a801f7dce42b8fa430d?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/fab17846235144ebee93c291e3a0ee7ec5631a0229bf2a801f7dce42b8fa430d?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/fab17846235144ebee93c291e3a0ee7ec5631a0229bf2a801f7dce42b8fa430d?s=96&d=mm&r=g","caption":"Stephen Biles"}}]}},"_links":{"self":[{"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/posts\/2307","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/users\/1158"}],"replies":[{"embeddable":true,"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/comments?post=2307"}],"version-history":[{"count":0,"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/posts\/2307\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/media\/2311"}],"wp:attachment":[{"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/media?parent=2307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/categories?post=2307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agrilife.org\/mid-coast-ipm\/wp-json\/wp\/v2\/tags?post=2307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}