Cucurbit Downy Mildew ipmPIPE April 3 to May 13, 2020 epidemic updates

The Cucurbit downy mildew forecast is hosted by the North Carolina State University departments of Plant Pathology & Marine, Earth, and Atmospheric Sciences. The website provides a map of recent outbreaks and lists outbreaks.

Visit the Cucurbit Downy Mildew Forecast Homepage


Epidemic updates

  • May 8 : New report from GA. CDM has been confirmed in Tift County, GA.
  • April 17 and 20: First report from GA. New report from FL. 17: CDM has been confirmed in Echols County, GA. 20: CDM has been confirmed in Hillsborough County, FL.
  • April 10:  CDM is confirmed on watermelon in a 150 acre field in DeSoto County, FL. Incidence is 100%; severity is unknown but the report states “these are some of the worst symptoms seen by the reporter”. Estimated date of first symptoms is January 6. CDM is confirmed on acorn / yellow squash in a 30 acre field in Hendry County, FL . Incidence is 1%, severity is 1%. Estimated date of first symptoms is January 6.
  • April 3 : First reports from the U.S.. CDM has been confirmed in DeSoto, Hendry, Collier, Miami-Dade, and Highlands Counties, FL.

Overview: Epidemic spread unlikely. Transport events curve to the west and north each day. Solar exposure should kill the bulk of any airborne spores during these events, save for some of those in southern FL on Thursday. Conditions will likely become more favorable for epidemic spread late this week, at which time the events moving over the interior Southeast produce greater threat.