{"id":644,"date":"2021-03-31T13:44:02","date_gmt":"2021-03-31T17:44:02","guid":{"rendered":"https:\/\/site.extension.uga.edu\/benhillcoag\/?p=644"},"modified":"2021-03-31T13:44:03","modified_gmt":"2021-03-31T17:44:03","slug":"cold-temperatures-and-post-field-corn-herbicide-applications-prostko","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/benhillcoag\/2021\/03\/cold-temperatures-and-post-field-corn-herbicide-applications-prostko\/","title":{"rendered":"Cold Temperatures and POST Field Corn Herbicide Applications (Prostko)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Cold Temperatures and POST Field Corn Herbicide Applications (Prostko)<\/h3>\n\n\n\n<p>Over the next few days (April 1-4), low daily air temperatures are expected to drop below 50 and even 40 degrees in many areas.&nbsp; Consequently, I would encourage any field corn grower who wants to make a POST herbicide application during this time period to consider waiting until next week when temperatures get warmer.&nbsp; It has been my experience that when herbicides are applied in colder temperatures, weed control will likely be reduced\/slowed and crop injury increased (i.e. reduced plant metabolism).&nbsp; As of today, weather conditions for herbicide applications next week (April 5-9) look very favorable and weed growth from now until then would not be significant enough to negatively impact control.&nbsp; In general, summer annual weeds do not grow as fast in April as they do in May\/June.<\/p>\n\n\n\n<p>A few years ago, I applied Halex GT + Atrazine + Induce early (V2 stage) during a cold period (8\/15 days with low temps below 50 F) and observed significantly more crop injury than usual (Figure 1).&nbsp;&nbsp;The good news is that the field corn recovered from this injury and final yields were&nbsp;NOT&nbsp;reduced by the 1X rate.&nbsp; FYI, I am not picking on Halex GT (<em>one of many awesome field corn herbicides<\/em>) here since increased crop response could happen with almost any POST herbicide when applied in unfavorable environments.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table caes-extended-core-table\"><table><tbody><tr><td><img decoding=\"async\" src=\"https:\/\/1.bp.blogspot.com\/-NMoQYhA-pJE\/YGR9TY5bwKI\/AAAAAAAABlw\/LGJYcL7RtW8aFKqfBkaet53YYb--zjWOwCNcBGAsYHQ\/s960\/Slide1.JPG\"><a href=\"https:\/\/1.bp.blogspot.com\/-NMoQYhA-pJE\/YGR9TY5bwKI\/AAAAAAAABlw\/LGJYcL7RtW8aFKqfBkaet53YYb--zjWOwCNcBGAsYHQ\/s960\/Slide1.JPG\"><\/a><\/td><\/tr><tr><td>Figure 1.&nbsp; Field corn injury from Halex GT + Atrazine + Induce applied at the V2 stage of growth during&nbsp;colder weather in 2018 (low air temperatures &lt;50 F for 8\/15 days).<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Cold Temperatures and POST Field Corn Herbicide Applications (Prostko) Over the next few days (April 1-4), low daily air temperatures are expected to drop below 50 and even 40 degrees in many areas.&nbsp; Consequently, I would encourage any field corn grower who wants to make a POST herbicide application during this time period to consider [&hellip;]<\/p>\n","protected":false},"author":234,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25,22],"tags":[],"class_list":["post-644","post","type-post","status-publish","format-standard","hentry","category-corn","category-herbicides"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts\/644","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/users\/234"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/comments?post=644"}],"version-history":[{"count":1,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts\/644\/revisions"}],"predecessor-version":[{"id":645,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts\/644\/revisions\/645"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/media?parent=644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/categories?post=644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/tags?post=644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}