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Chlorothalonil may be in short supply for peanut growers

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In recent field visits and phone calls we have come to the realization that Bravo (chlorothalonil) will again be in short supply this year.  Below are some options given by Dr. Bob Kemerait, UGA Extension Plant Pathologist, that growers may want to consider if they are having difficulty getting enough chlorothalonil to treat their peanut crop.

  1. Replace 1.5 pt/A chlorothalonil with 15 fl oz/A Elast
  2. Replace 1.5 pt/A chlorothalonil with 10 fl oz/A Topsin/thiophanate methyl, but ONLY one time!
  3. Replace 1.5 pt/A chlorothanil with 7.0 fl oz/A Stratego (concern about resistance management…)
  4. Replace 1.5 pt/A chlorothalonil with 3.5 fl oz/A Absolute (concern about resistance management…)
  5. Replace 1.5 pt/A chlorothalonil with 5.5 fl oz/A Alto (better to mix 1.0 pt/A chlorothalonil with 5.5 fl oz/A Alto, or at least SOME chlorothalonil with the Alto!)
  6. Replace 1.5 pt/A chlorothalonil with 5.5 fl oz/A Alto + 5 fl oz/A Topsin/thiophanate methyl
  7. Extend chlorothalonil with 1.0 pt/A chlorothalonil with 1.0 pt/A Kocide
  8. Extend chlorothalonil with 1.0 pt/A chlorothalonil with 5.0 fl oz/A Topsin/thiophanate methyl
  9. Extend chlorothalonil with 1.0 pt/A chlorothalonil with 2.0 fl oz/A propiconazole