Re: Fumigation and things...fungicides

Mike,
   Your county extension agent has given you the names of some good fungicides
that are used mostly by commercial growers. They are not all needed in a spray
program for Atlantic Giants. Bravo and the newer Terranil, I believe are
chemically the same. Bravo is a trade name for the chemical
Chlorothalonil....it is also known as Daconil. If you read labels in the
garden centers for vegetable disease control products, you will come across
Daconil or Chlorothalonil. If you were going to pick one product to control
the widest number of diseases.....Bravo, Daconil or anything with
Chlorothalonil in it is your best bet. It is a protectant and not a systemic,
so you must get good spray coverage. I have never used Terranil, but believe
it to be the same....check it out. Bayleton is the old standby for powdery
mildew. It is effective on only one of the two common strains of powdery
mildew and serious resistance problems have developed. To the point where one
spray is about all the effectiveness you will get out of Bayleton before the
fungus becomes resistant. Hence, if using Bayleton, do not spray until the
first signs of the disease appears. To scout, look at 100 leaves both top and
bottom. When you see the white powdery film on one or two leaves....spray.
Bayleton is systemic. If you spray every week with it ( in July), by the time
you really need it in August and Sept......it will be ineffective. Bayleton is
about 130 dollars for a two pound bag. It would be a lifetime supply as it
goes a long way. You may need a permit to buy it. Atlantic giants do get some
powdery mildew at the end of the year, but not nearly as bad as the regular
field pumpkin gets it. The current gospel on field pumpkins is to wait and
scout your field. At first signs of mildew, alternate sprays of Bravo,
Bayleton and Benlate on a weekly basis. This is not cheap and it is not the
cure all , but it is the best that is out there at the present moment for
pumpkins. For the Atlantic Giant, I think your best bet is to use Bravo and
leave it at that. Maneb is another common fungicide. There are other
fungicides out there for specific diseases, but the Bravo ( Chlorothalonil,
Daconil) is your best general purpose thing to use.
                                       pumkinguy@aol.com
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