{"id":1282,"date":"2019-08-26T08:38:01","date_gmt":"2019-08-26T12:38:01","guid":{"rendered":"http:\/\/site.extension.uga.edu\/pecan\/?p=1282"},"modified":"2019-08-26T08:38:01","modified_gmt":"2019-08-26T12:38:01","slug":"controlling-bermudagrass-on-young-trees","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/pecan\/2019\/08\/controlling-bermudagrass-on-young-trees\/","title":{"rendered":"Controlling Bermudagrass on Young Trees"},"content":{"rendered":"<p><a href=\"https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/Pecans-BermudaPasture-5-2-19-003-e1558363628873.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1295\" src=\"https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/Pecans-BermudaPasture-5-2-19-003-e1558363628873.jpg\" alt=\"\" width=\"768\" height=\"663\" srcset=\"https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/Pecans-BermudaPasture-5-2-19-003-e1558363628873.jpg 768w, https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/Pecans-BermudaPasture-5-2-19-003-e1558363628873-300x259.jpg 300w, https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/Pecans-BermudaPasture-5-2-19-003-e1558363628873-160x138.jpg 160w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/p>\n<p>Weed control is especially important during the tree&#8217;s first few years of growth. Orchards planted behind hay fields or in areas where bermudagrass is prominent may struggle with control. Bermudagrass is a very difficult perennial grass to control, and it&#8217;s aggressive growth can be in direct competition with young tree feeder roots getting established. Because bermudagrass spreads significantly by rhizomes, post-emergent herbicide applications are our only viable option. With bermudagrass, it&#8217;s going to take multiple applications. Keep in mind the most effective timing on perennial weeds like bermudagrass is toward the end of the season (September &#8211; October). During this time, bermudagrass is moving photosynthate to its roots to prepare for dormancy. This allows translocating herbicides to better move to the roots.<\/p>\n<h3>Herbicides<\/h3>\n<ul>\n<li><strong>Fusilade<\/strong> (<em>fluazifop<\/em>) can be used for both <strong>bearing<\/strong> and <strong>non-bearing<\/strong> trees. We have to use crop oil with Fusilade (1 qt\/A). For pecan, we can use up to three times per year. Use no more than 24 oz at a time. DO NOT use when harvestable nuts are on the ground, or if livestock graze under the trees.<\/li>\n<li><strong>Poast<\/strong> (sethoxydim) can also be used for both <strong>bearing<\/strong> and<strong> non-bearing<\/strong> trees. We needs crop oil also (1 qt\/A). Use no more than 2.5 pint \/ A for each application. Don&#8217;t harvest within 15 days of application.<\/li>\n<li><strong>Select<\/strong> (clethodim) can only be used in <strong>non-bearing<\/strong> trees. We need a non-ionic surfactant (1 qt\/100 gal of spray).<\/li>\n<li><strong>Glyphosate<\/strong> can be used on <strong>non-bearing<\/strong> and <strong>bearing<\/strong> trees. As long as herbicide guards are on trees and care is taken toward wind and drift, there is no problem with glyphosate on young trees.<\/li>\n<\/ul>\n<h3><strong>Young Tree Program<\/strong><\/h3>\n<p>A good bermudagrass control program will be multiple applications of these herbicides.<\/p>\n<ol>\n<li>After spring green up &#8211; Use a grass herbicide alone at a high rate (such as Select).<\/li>\n<li>Mid summer &#8211; Follow up with a strong rate of glyphosate.<\/li>\n<li>After August 15th &#8211; Use a grass herbicide mixed with a high rate of glyphosate. End of the year applications (late September\/October) are the best on Bermuda as it is storing carbohydrates for the winter. This will do a good job to protect young trees.<\/li>\n<\/ol>\n<figure id=\"attachment_1294\" aria-describedby=\"caption-attachment-1294\" style=\"width: 768px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/BermudaRhizome-1WeekAfterHarrowing-002.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1294\" src=\"https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/BermudaRhizome-1WeekAfterHarrowing-002.jpg\" alt=\"\" width=\"768\" height=\"1024\" srcset=\"https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/BermudaRhizome-1WeekAfterHarrowing-002.jpg 768w, https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/BermudaRhizome-1WeekAfterHarrowing-002-225x300.jpg 225w, https:\/\/site.extension.uga.edu\/pecan\/files\/2019\/05\/BermudaRhizome-1WeekAfterHarrowing-002-104x138.jpg 104w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><figcaption id=\"caption-attachment-1294\" class=\"wp-caption-text\">Bermuda rhizome coming back after harrowing.<\/figcaption><\/figure>\n<p>Other points for bermudagrass control:<\/p>\n<ul>\n<li><strong>How much water per acre should we use with glypohosate?<\/strong> Do not use more than 20 GPA with glyphosate. We recommend 10-20 &#8211; if you go higher you dilute the effects of glyphosate.<\/li>\n<li><strong>Is surfactant needed with glyphosate?<\/strong> No surfactants are needed. Add an AMS (liquid or spray grade) if you have hard water to acidify.<\/li>\n<li><strong>How high of a rate of glyphosate on young trees?<\/strong> There would be no issues using a high rate (2 quarts per acre) on young trees that have irrigation. Probably more risky without irrigation to go this high.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Weed control is especially important during the tree&#8217;s first few years of growth. Orchards planted behind hay fields or in areas where bermudagrass is prominent may struggle with control. Bermudagrass is a very difficult perennial grass to control, and it&#8217;s aggressive growth can be in direct competition with young tree feeder roots getting established. Because [&hellip;]<\/p>\n","protected":false},"author":227,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-1282","post","type-post","status-publish","format-standard","hentry","category-weed-management"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/posts\/1282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/users\/227"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/comments?post=1282"}],"version-history":[{"count":10,"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/posts\/1282\/revisions"}],"predecessor-version":[{"id":1443,"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/posts\/1282\/revisions\/1443"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/media?parent=1282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/categories?post=1282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/pecan\/wp-json\/wp\/v2\/tags?post=1282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}