Thanks for signing up!

Look for the Digest in your email twice a month.

Follow Us

Sign up for our Digest to receive the latest agronomic insights and crop management advice for your primary growing region delivered twice a month to your inbox.

Southeastern Watermelon Diseases to Watch for in 2017

March 20, 2017

Gummy stem blight is the most common watermelon disease in the Southeast, according to the results of a Clemson University survey shared in a recent Growing Produce article. This disease produces large, target-shaped spots on leaves and cankers on stems of watermelon plants.

Often overlooked by growers, powdery mildew is the second most common disease in watermelons. No resistant cultivars of watermelon are available, so fungicides are necessary to control this disease. Powdery mildew can spread quickly under favorable conditions, causing symptoms to appear within three days of infection.

Clemson University Cooperative Extension advises that systematic fungicides are necessary to control these major diseases. This growing season, Syngenta recommends Orondis® Opti and Aprovia® Top fungicides as components of a season-long disease control program to protect crops and help maximize marketable yield.

An agronomic chart showing fungicide recommendations for watermelon.

Syngenta Cucurbit Seasonal Disease Control Calendar


Sign up for the Know More, Grow More Digest to receive twice monthly agronomic e-mail updates pertinent to your area.

All photos are the property of Syngenta or are used with permission.

Syngenta hereby disclaims liability for third party websites.

© 2017 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties. Please check with your local extension service to ensure registration status. Orondis Ridomil Gold SL is a combination of separately registered products: Orondis Gold 200 and Ridomil Gold SL fungicides. Orondis Opti is a combination of separately registered products: Orondis Opti A and Orondis Opti B fungicides. Orondis Ultra is a combination of separately registered products: Orondis Ultra A and Orondis Ultra B fungicides. Aprovia®, Bravo®, Inspire Super®, Orondis®, Quadris Top®, Revus®, Ridomil Gold®, Weather Stik®, the Alliance Frame, the Purpose Icon and the Syngenta logo are trademarks of a Syngenta Group Company.