As of May 11, 28% of the Georgia peanut crop was reported as planted.\u00a0 Thus, peanut growers should now be evaluating the success of their PRE weed control programs and deciding on the need for early postemergence or “cracking” herbicide applications.\u00a0 Here are a few reminders about cracking sprays:<\/p>\n\n\n\n
3) If Dual Magnum or Outlook are used with paraquat + Storm or Basagran, no additional adjuvants are required.\u00a0 If Anthem Flex or Warrant or Zidua are used, a NIS @ 0.25% v\/v is suggested. Below is a spray guide – to be used as a guide. Growing conditions, disease development, and weather events may warrant making adjustments in your watermelon fungicide program. Feel free to call me during the growing season if you would like to go over what would be the most effective fungicide application for your watermelons.<\/em> Tucker 229-507-8862<\/em><\/p>\n\n\n\n Watermelon Fungicide Spray Programs 2020 As of May 11, 28% of the Georgia peanut crop was reported as planted.\u00a0 Thus, peanut growers should now be evaluating the success of their PRE weed control programs and deciding on the need for early postemergence or “cracking” herbicide applications.\u00a0 Here are a few reminders about cracking sprays: 1) If a peanut grower started […]<\/p>\n","protected":false},"author":38,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-711","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/posts\/711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/users\/38"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/comments?post=711"}],"version-history":[{"count":1,"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/posts\/711\/revisions"}],"predecessor-version":[{"id":712,"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/posts\/711\/revisions\/712"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/media?parent=711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/categories?post=711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/cook\/wp-json\/wp\/v2\/tags?post=711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
1) If a peanut grower started clean and used a good residual weed control program (i.e. Prowl or Sonalan + Valor + Strongarm) that was activated with irrigation or rainfall, the need for a cracking spray is questionable.\u00a0 Best thing in this situation is to go to the field and look to see what has escaped or not.\u00a0 If the field is relatively weed-free, a cracking spray may not be justifiable.<\/u><\/em><\/strong>\u00a0 \u00a0Growers might consider waiting until 30-40 DAP to pull the trigger earlier on a POST program such as Cadre + 2,4-DB + Anthem Flex or Dual Magnum or Outlook or Warrant or Zidua.\u00a0\u00a0
2) If a grower decides to use a cracking spray, I would suggest a combination of paraquat + Storm or Basagran + Anthem Flex or Dual Magnum or Outlook or Warrant or Zidua.\u00a0 Suggested use rates would be as follows:
\u00a0\u00a0 \u00a0a) 2 lb ai\/gal paraquat = 12 oz\/A or 3 lb ai\/A paraquat = 8 oz\/A\u00a0\u00a0 \u00a0b) Storm 4SL @ 16 oz\/A or Basagran 4SL @ 8 oz\/A.\u00a0 If a grower wants to make his own “Georgia” Storm then use Ultra Blazer 2SL @ 16 oz\/A + Basagran 4SL @ 8 oz\/A.\u00a0 \u00a0 c) Anthem Flex 4SE @ 3 oz\/A or Dual Magnum 7.62EC @ 16 oz\/A or Outlook 6EC @ 12.8 oz\/A or Warrant 3ME @ 48 oz\/A or Zidua 85WG @ 1.5 oz\/A or Zidua 4.17SC @ 2.5 oz\/A.<\/p>\n\n\n\n
4) I would prefer peanut cracking sprays to be applied in 15 GPA and tractor speeds of 10 MPH or less to improve spray coverage and reduce the production of dust (which can greatly reduce paraquat efficacy<\/em>).\u00a0
5) Given the option of using either an AIXR or TTI spray tip, I would prefer the AIXR tip.\u00a0\u00a0
6) If growers use higher rates of paraquat and\/or delay paraquat applications past 28 days after cracking (DAC), the risk for yield loss resulting from paraquat injury is increased.\u00a0 Recent results from a 2018 weed-free field trial indicated that paraquat treatments applied ~35 DAC resulted in a 5.5% peanut yield reduction.<\/p>\n\n\n\nWatermelon Fungicide Spray Guide<\/h2>\n\n\n\n
Bhabesh Dutta
Extension Vegetable Pathologist \u2013 University of Georgia<\/strong>
As with most crops, disease management begins prior to planting the crop to be protected. By using such methods as disease-free seed and transplants, proper rotation, disking and plowing, and use of resistant varieties, growers can minimize the amount of disease that is available to attack their crop. Using many practices takes all the weight off of any on practice and gives growers more disease management options at lower risk. Once plants are in the field, however, fungicide sprays are relied on heavily for effective and economical management of plant diseases. This spray guide is designed to encompass many diseases that attack watermelon during the growing season(s) in Georgia.
This is a generalized sequence of fungicide spray<\/em><\/strong>. A 7-10 day schedule can be followed; however, frequency, type and sequence of fungicide spray may vary situation to situation and field to field. Growers are advised to communicate with their respective county extension agents if they have any queries regarding this spray guide.<\/p>\n\n\n\n
Spray 1: Proline at-plant drench
Spray 2: Chlorothalonil1 – GSB; Actigard and\/or copper fungicide2 – BFB
Spray 3: Copper – BFB
Spray 4: Chlorothalonil – GSB; Actigard and\/or copper fungicide \u2013 BFB
Spray 5: Luna Experience \u2013 GSB; copper fungicide \u2013 BFB
Spray 6: Inspire Super or Aprovia top or Miravis Prime \u2013 GSB; Copper fungicide \u2013 BFB
Spray 7: Vivando or Gatten or Quintec \u2013 POW; Orondis Ultra (foliar) – DOW and PCAP; Copper \u2013 BFB
Spray 8: Inspire Super or Aprovia top or Miravis Prime \u2013 GSB; Vivando or Gatten or Quintec \u2013 POW; Quadris or Cabrio \u2013 ANTH
Spray 9: Orondis Ultra3 (foliar) \u2013 PCAP; Elumin or Ranman or Previcur flex \u2013 DOW
Spray 10: Proline or Aprovia Top OR Inspire Super – GSB; Vivando or Gatten or Quintec \u2013 POW; Quadris or Cabrio \u2013 ANTH; Presidio \u2013 PCAP; Elumin or Previcur flex – DOW<\/p>\n\n\n\n
1 Chlorothalonil (Bravo, Echo, Equus, etc\u2026) may cause rind burn if sprayed within 21 day of harvest.
2 Actigard and\/or Copper is used prior to fruit set if bacterial fruit blotch is an issue.
3 Be mindful of preharvest intervals (PHIs) for later sprays as many may have a 7-14 day PHI.
Always read the label for detailed application instructions or consult the Georgia Pest Control Handbook.
Disease Acronyms: BFB = bacterial fruit blotch; GSB = gummy stem blight; POW = powdery mildew; DOW = downy mildew; ANTH = anthracnose; PCAP = Phytophthora crown and fruit rot. FW=Fusarium wilt.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"