2020 Epidemic History - Cucurbit Downy Mildew ipmPIPE

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.

The forecast(s) presented in this report only represent estimates of pathways spores are likely to travel from confirmed sources. The forecasts were prepared for purposes of supporting the research and extension functions of North Carolina State University. The forecasts contained herein were not prepared or issued in support of business, industrial, or investment decisions whether they are profit-making or otherwise. The authors; the Department of Plant Pathology; Department of Marine, Earth, and Atmospheric Sciences; North Carolina State University; The University of North Carolina, their Governors, Trustees, officers, administrators, employees, and agents do not assume any responsibility for any interpretations of the data, nor do they warrant the fitness of the forecasts for any use.

NOTE: These forecasts/outlooks apply ONLY to disease development from AIRBORNE TRANSPORT of spores. We do not have the capability to track cucurbit downy mildew development by other means, such as transporting infected materials, nor will we attempt to do so. Please consult the County Extension Service personnel in your area if you have questions about these matters. ***