Morningglory control in corn has been topic of discussion this week. In Georgia, morningglories are particularly difficult to manage because residual herbicides do not provide full-season control and corn maturation in late June\/July allows ample sunlight to reach the soil surface which stimulates late-season emergence\/growth. In heavy infestations, complete control of morningglory is almost impossible in our environment. Dr. Eric Prostko, UGA Corn Weed Specialist, discusses a few tips on managing morningglory in corn… <\/p>\n\n\n\n
A few things to consider: 1)Use a PRE (1 qt\/A) and POST (1.5 qt\/A) application of atrazine (4 lb ai\/gal). The second application of atrazine must be applied before the corn exceeds 12\u201d in height. POST applications can be delayed until that time to extend residual control. <\/p>\n\n\n\n
2)Consider using the Liberty-Link (LL) system. Generally, Liberty is more effective on morningglory than glyphosate. Atrazine can be tank-mixed with Liberty for residual control.<\/p>\n\n\n\n
3)Other herbicides that can be tank-mixed with glyphosate to improve the control of morningglory include, 2,4-D, Clarity, Status, Aim, and ET. <\/p>\n\n\n\n
4)Consider using a LAY-BY or PDIR application of Evik. <\/p>\n\n\n\n
5)Consider using a harvest-aid such as Aim. Late-season applications of Aim will not completely remove morningglory plants from a field but will desiccate the vines enough to improve harvest. Aim has no effect on smallflower morningglory. <\/p>\n\n\n\n
6)Harvest corn early before morningglory plants take over the field. Obviously, this management tactic will necessitate the use of on-farm drying\/storage facilities. <\/p>\n\n\n\n
If you have any questions please feel free to contact your local county agent. <\/p>\n","protected":false},"excerpt":{"rendered":"
Morningglory control in corn has been topic of discussion this week. In Georgia, morningglories are particularly difficult to manage because residual herbicides do not provide full-season control and corn maturation in late June\/July allows ample sunlight to reach the soil surface which stimulates late-season emergence\/growth. In heavy infestations, complete control of morningglory is almost impossible […]<\/p>\n","protected":false},"author":67,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,28],"tags":[],"class_list":["post-2470","post","type-post","status-publish","format-standard","hentry","category-corn","category-weed-resistance"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts\/2470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/users\/67"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/comments?post=2470"}],"version-history":[{"count":4,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts\/2470\/revisions"}],"predecessor-version":[{"id":2486,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts\/2470\/revisions\/2486"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/media?parent=2470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/categories?post=2470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/tags?post=2470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}