Cucurbit Downy Mildew Found in SC

This past week cucurbit downy mildew was found in Charleston and Horry Counties.  Downy mildew blows in from the south in the summer and is a very serious disease once it is established.  Anyone growing cucurbit crops (cucumber, watermelon, squash, zucchini, cantaloupe, pumpkins, etc.) in SC should begin making preventative fungicide sprays now, if they have not already done so.


Downy Mildew symptoms on cucumber leaf.

The forecast shows a decent chance of rain every day this week.  This will be a good opportunity for downy mildew to spread.  We need to be diligent in our disease control programs for the remainder of the crop.  Take a look back at this blog post for detailed information on managing downy mildew.


Downy Mildew symptoms on cucumber leaf.

Downy mildew can make growing cucurbits in the late summer and fall a challenge.  Get on a strict spray schedule and stick to it.  You can look at updates on the latest reported cases of downy mildew on the Cucurbit Downy Mildew Alert System website.  If you need help scouting or identifying downy mildew, please contact your local Clemson Extension agent.

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