Cucurbit Downy Mildew Update – July 24, 2009

 Bob Mulrooney, Extension Plant Pathologist;

Conditions continue to be favorable for downy mildew on all our cucurbits. Be sure to be including downy mildew fungicides such as Ranman, Previcur Flex, Tanos and Presidio for downy mildew control. They all need to be tank mixed with a protectant fungicide. Disease pressure is increasing and waiting until the three leaf stage may not provide the control desired if infected plantings are nearby. Check the website often for the latest forecast at

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