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Cucurbit Downy Mildew Epidemic History for 2017

March 25
New report from FL. CDM has been confirmed on cucumber and watermelon in a 20 acre commercial field in Manatee County, FL. Incidence and severity are 100% / 15% on the cucumber, 25% / 5% on the watermelon. Estimated date of first symptoms is March 17.

March 7
New report from FL. CDM has been confirmed on cucumber, acorn and butternut squash, cantaloupe, giant pumpkin, and watermelon in the sentinel plot in Miami-Dade County, FL. Incidence and severity vary; incidence is highest in cucumber, Big Max pumpkin, and butternut squash. Severities are low. Estimated date of first symptoms is March 3.

February 17
First report from the U.S. (FL). CDM has been confirmed on cucumber in a greenhouse in Citrus County, FL. Incidence is 100%, severity is 40%. Estimated date of first symptoms is January 10.