September 1 – 15 Cucurbit Downy Mildew epidemic updates | ipmPIPE
September 13
New report from AR. CDM has been confirmed on jack-o-lantern pumpkin in a 1a field in White County, AR. Incidence is 80%, severity is 20%. Estimated date of first symptoms is September 5.
September 9
First report from MS. New reports from KY, NY, and WI. CDM has been discovered on ‘Waldo’ winter squash in a home garden in Copiah County, MS. Incidence is unknown; severity is unknown. Estimated date of first symptoms is September 4. CDM has been confirmed on cucumber in fields in Lewis and Kenton Counties, KY. Incidences are unknown, severities are unknown. Estimated dates of first symptoms are August 31 and September 4. CDM has been confirmed on cucumber in a 1a field in Renesselaer County, NY. Incidence is 15%, severity is 10%. Estimated date of first symptoms is August 31. CDM has been confirmed on watermelon in a tiny home garden in Buffalo County, WI. Incidence is 100%, severity is 30%. Estimated date of first symptoms is September 3.
September 6
First report from NH. New reports from OH and PA. CDM has been confirmed on butternut squash in a 1a home garden in Strafford County, NH. Incidence is 50%, severity is unknown. Estimated date of first symptoms is September 3. CDM has been confirmed on cucumber in a 100 sq ft research plot in Fulton County, OH. Incidence is 100%, severity is 30%. Estimated date of first symptoms is August 26. CDM has been discovered on cucumber in a 30a field shared by Seneca and Sandusky Counties, OH. Incidence is 40%, severity is 20%. Estimated date of first symptoms is August 25. CDM has been discovered on cucumber in a 100 sq ft home garden in Juniata County, PA. Incidence is 100%, severity is 80%. Estimated date of first symptoms is August 21. CDM has been confirmed on cucumber in a 0.1a field in Mifflin County, PA. Incidence is 100%, severity is 30%. Estimated date of first symptoms is August 28.
September 4
New reports from MI. CDM has been confirmed on cucumber in a field in Clinton County, MI. Incidence is unknown, severity is unknown. Estimated date of first symptoms is September 3. CDM has been confirmed on cucumber in fields in Tuscola and St. Joseph Counties, MI. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 28. CDM has been confirmed on acorn / yellow squash in a field in Monroe County, MI. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 28.
August 30
New reports from SC, MA, NY, KY, OH, and VA . CDM has been confirmed on acorn / yellow squash in a field in Colleton County, SC. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 15. CDM has been confirmed on cucumber in a 0.5a. field in Worcester County, MA. Incidence is 25%, severity is 10%. Estimated date of first symptoms is August 26. CDM has been confirmed on cucumber in a field in Yates County, NY. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 26. CDM has been confirmed on watermelon in a field in Christian County, KY. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 24. CDM has been confirmed on cucumber in a research plot in Huron County, OH. Incidence is <1%, severity is 25%. Estimated date of first symptoms is August 25. CDM has been confirmed on jack-o-lantern pumpkin in a 2a field in Richmod County, VA. Incidence is 100%, severity is 10%. Estimated date of first symptoms is August 26.
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