{"id":2239,"date":"2023-05-19T16:15:29","date_gmt":"2023-05-19T21:15:29","guid":{"rendered":"https:\/\/agrilife.org\/mid-coast-ipm\/?p=2239"},"modified":"2023-05-19T16:16:31","modified_gmt":"2023-05-19T21:16:31","slug":"ipm-update-cotton-growth-and-fleahoppers","status":"publish","type":"post","link":"https:\/\/agrilife.org\/mid-coast-ipm\/ipm-update-cotton-growth-and-fleahoppers\/","title":{"rendered":"IPM Update – Cotton Growth and Fleahoppers"},"content":{"rendered":"

\"\"<\/a>Cotton maturity ranges from 5-6 leaf to third-grown square.\u00a0 Continue to scout for cotton fleahoppers<\/strong>, I have fields with more than 40 per 100 plants.\u00a0 The Economic Threshold is 15 per 100 plants so these field should be treated to prevent square loss.\u00a0 Some fields or parts of fields are yellowing due to excessive soil moisture making nitrogen less available.\u00a0 This should be corrected once the soil dries if the field was properly fertilized.<\/p>\n

I have had several conversations about the temperatures we have had so far this year.\u00a0 Some of them start with “Its finally warming up.”\u00a0 This got me to looking at historical temperatures and what I found was we are experiencing slightly above normal heat unit accumulation.<\/p>\n

It is important to note that we have had some cold spells that have delayed some crop maturity.\u00a0 My calendar shows my cotton should have had its first squares May 1-2.\u00a0 But I did not see many squares until May 9-10.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Heat Unit Accumulation (DD60s) from date until May 16<\/strong><\/td>\n<\/tr>\n
<\/td>\nHU in 2023<\/td>\n10-year average<\/td>\ndifference from average<\/td>\n<\/tr>\n
1-Mar<\/td>\n920<\/td>\n669<\/td>\n+251<\/td>\n<\/tr>\n
10-Mar<\/td>\n821<\/td>\n660<\/td>\n+161<\/td>\n<\/tr>\n
20-Mar<\/td>\n757<\/td>\n630<\/td>\n+127<\/td>\n<\/tr>\n
30-Mar<\/td>\n639<\/td>\n578<\/td>\n+60<\/td>\n<\/tr>\n
1-Apr<\/td>\n606<\/td>\n565<\/td>\n+41<\/td>\n<\/tr>\n
10-Apr<\/td>\n515<\/td>\n493<\/td>\n+21<\/td>\n<\/tr>\n
20-Apr<\/td>\n407<\/td>\n391<\/td>\n+16<\/td>\n<\/tr>\n
30-Apr<\/td>\n294<\/td>\n264<\/td>\n+30<\/td>\n<\/tr>\n
10-May<\/td>\n129<\/td>\n116<\/td>\n+13<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Plant Growth Regulators<\/strong> are also a topic of discussion.\u00a0 If you are already planning a herbicide or insecticide application, it is reasonable to add a mepiquat chloride (MC) product at 4-8 oz\/A. I would not apply higher rates prior to bloom.\u00a0 Keep in mind what cotton variety is planted as there is considerable difference in varietal response to MC. Some varieties can be hurt with too much MC at prior to bloom. Others may get away from you if you don’t get the MC into the plant soon.<\/p>\n

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

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

When: 9 am, Monday, May 22<\/p>\n

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

We will be looking at a new way to scout for cotton fleahoppers.<\/p>\n","protected":false},"excerpt":{"rendered":"

Cotton maturity ranges from 5-6 leaf to third-grown square.\u00a0 Continue to scout for cotton fleahoppers, I have fields with more than 40 per 100 plants.\u00a0 The Economic Threshold is 15 per 100 plants so these field should be treated to prevent square loss.\u00a0 Some fields or parts of fields are yellowing due to excessive soil moisture making nitrogen less available.\u00a0 This should be corrected once the soil dries if the field was properly fertilized. I have had several conversations about the temperatures we have had so far this… Read More →<\/a><\/span><\/p>\n","protected":false},"author":1158,"featured_media":2014,"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":[20,25,42],"class_list":["post-2239","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pest-management-news","tag-cotton-fleahopper","tag-economic-threshold","tag-plant-growth-regulator"],"acf":[],"yoast_head":"\nIPM Update - Cotton Growth and Fleahoppers - 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\/ipm-update-cotton-growth-and-fleahoppers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IPM Update - Cotton Growth and Fleahoppers - Mid-Coast IPM\" \/>\n<meta property=\"og:description\" content=\"Cotton maturity ranges from 5-6 leaf to third-grown square.\u00a0 Continue to scout for cotton fleahoppers, I have fields with more than 40 per 100 plants.\u00a0 The Economic Threshold is 15 per 100 plants so these field should be treated to prevent square loss.\u00a0 Some fields or parts of fields are yellowing due to excessive soil moisture making nitrogen less available.\u00a0 This should be corrected once the soil dries if the field was properly fertilized. 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