{"id":643,"date":"2022-05-12T11:50:52","date_gmt":"2022-05-12T15:50:52","guid":{"rendered":"https:\/\/site.extension.uga.edu\/turnerab\/?p=643"},"modified":"2022-05-12T11:50:57","modified_gmt":"2022-05-12T15:50:57","slug":"weed-update-prostko","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/turnerab\/2022\/05\/weed-update-prostko\/","title":{"rendered":"Weed Update – Prostko"},"content":{"rendered":"\n

<\/h3>\n\n\n\n

Here are a couple of things to think about based upon recent phone calls\/texts and observations from some of my current research projects.<\/p>\n\n\n\n

1) If growers observe unexpected\/unusual leaf injury\/burn after a corn herbicide is applied, it is most likely caused by Valor sprayer contamination.  See below for what this injury looks like and how it could potentially influence corn yields. <\/p>\n\n\n\n

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<\/a><\/p>\n\n\n\n

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2) When evaluating the potential effects of Liberty on pigweed control, growers should wait at least 7 days before making a final decision on whether or not it worked.  FYI, the colder temperatures this week (< 60 F) will slow down the activity of Liberty for sure.  <\/p>\n\n\n\n

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<\/a><\/p>\n\n\n\n

3) Peanut growers will be making the decision to spray or not spray an early-postemergence (cracking<\/em>) herbicide.  If the peanut field was clean at planting and a strong residual herbicide program was used (activated with moisture), it is very likely that a cracking spray will not be needed.  See below (i.e. no weeds in my standard PRE program at 12 DAP):<\/p>\n\n\n\n

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<\/a>
4) My general recommendations for early-postemergence (cracking<\/em>) treatments in peanut are as follows:
a) Either paraquat (2 lb\/gal) @ 12 oz\/A or paraquat (3 lb\/gal) @ 8 oz\/A + either Storm @ 16 oz\/A or Basagran @ 8 oz\/A + one Group 15 herbicide [either Anthem Flex @ 3 oz\/A or Dual Magnum @ 16 oz\/A or Outlook @ 12.8 oz\/A or Warrant @ 48 oz\/A or Zidua @ 2.5 oz\/A (liquid)]. Generally, I have no preference between the Group 15’s when my suggested PRE\/EPOST\/POST peanut weed control programs are followed.<\/u><\/em><\/strong>b) Add NIS @ 0.25 v\/v when using Anthem Flex, Warrant, or Zidua.<\/p>\n\n\n\n

c) If need be, growers can make their own Storm (I call it Georgia Storm<\/em>), by tank-mixing Ultra Blazer (16 oz\/A) + Basagran (8 oz\/A). This is a slightly different rate than what is applied with current commercial Storm formulation @ 16 oz\/A (equivalent to Ultra Blazer @ 11 oz\/A + Basagran @ 11 oz\/A).<\/p>\n\n\n\n

d) Use at least 15 GPA and pressure\/nozzle configurations to produce medium to coarse droplets (236-403 microns).  Medium\/coarse droplets are yellow and green on this chart.<\/p>\n\n\n\n

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e) Excessive dust caused by dry weather and tractors driven at Warp Speed 10 will reduce the effectiveness of paraquat.  <\/p>\n\n\n\n

\"\"<\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"

Here are a couple of things to think about based upon recent phone calls\/texts and observations from some of my current research projects. 1) If growers observe unexpected\/unusual leaf injury\/burn after a corn herbicide is applied, it is most likely caused by Valor sprayer contamination.  See below for what this injury looks like and how […]<\/p>\n","protected":false},"author":304,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-643","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/posts\/643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/users\/304"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/comments?post=643"}],"version-history":[{"count":1,"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/posts\/643\/revisions"}],"predecessor-version":[{"id":644,"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/posts\/643\/revisions\/644"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/media?parent=643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/categories?post=643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/turnerab\/wp-json\/wp\/v2\/tags?post=643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}