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Options With Short Supply Of Chlorothalonil

What do we do with peanuts and the short supply of Bravo/chlorothalonil? Here are some good options from UGA Extension Pathologist Dr. Bob Kemerait:

  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.

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Common Corn Rust in Mitchell


Yesterday common corn rust was found in Mitchell county in isolated areas. Rome Ethredge in Seminole County is seeing some in his county as well.

First off this is NOT Southern Rust, so don’t worry. This disease is very similar but the kind of rust that causes significant yield loss. This disease is almost always found each year and rarely causes in yield loss and is of no worry to our corn producers.
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Valor on Peanut

Yesterday I visited a field with some Valor damage on peanut. Many of the seedlings were hit hard and looked bad. Fortunately these peanuts will be fine! The stand is still good, they are quality seed, and are already growing out of it. Before long you won’t be able to tell they were damaged.

Valor damage3
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Corn Disease

I have been scouting multiple fields throughout the county looking for disease in our corn crop. I have yet to find anything. It’s mostly fertilizer burn or gramoxone damage. Rome Ethredge of Seminole county says he is starting to see a little at low levels. Here are some pictures of what…
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UGA Extension is offering a pecan scab fungicide sensitivity testing. The testing will be handled by Dr. Katherine Stevenson with the Plant Pathology Dept.. This tests are free to the producer. A few orchards in Mitchell Co. have already been tested and have shown partial resistance to one or more fungicides applied…
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Water Needed in Corn

Our earliest corn in the county is right at or before tasseling. There are lot of areas planted that are in need of some rain or irrigation. When corn progresses past V6 stage the amount water taken up everyday increases. Now is a critical time in crop development and yields are being established. Growers that wish to have high yields in their corn crop need to eliminate all periods of drought stress in order to achieve that yield potential.
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Casebearers in Pecan: Should We Spray?

Now is the time period when Pecan Nut Casebearer (PNC) has normally been treated in Georgia. In the past few years there has been debate regarding just how much damage PNC does to the pecan crop here in Georgia. In Texas, PNC is a horrific pest.  Here in Georgia, its a different situation.

Here is an article addressing PNC in Georgia from Lenny Wells, Extension Pecan Specialist:

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