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2019 cdm epidemic history

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Cucurbit Downy Mildew Epidemic History for 2019


August 23
First report from OH. New report from VA. CDM has been confirmed on cucumber in a 2a field in Wayne County, OH. Incidence is 50%, severity is 10%. Estimated date of first symptoms is August 19. CDM has been confirmed on cucumber in a 1a field in Albemarle County, VA. Incidence is 40%, severity is 15%. Estimated date of first symptoms is August 15. CDM has been confirmed on butternut squash and cucumber in a 0.1a research plot in Rowan County, NC. Incidence is 100%, severity is 60%. Estimated date of first symptoms is August 19.

August 21
First reports from KY and WI. New reports from DE, MA, and MI. CDM has been confirmed on cucumber in a field in Pulaski County, KY. Incidence is 100%, severity is 17%. Estimated date of first symptoms is August 17. CDM has been confirmed on cucumber in a 1 field in Vernon County, WI. Incidence is 30%, severity is 100%. Estimated date of first symptoms is August 17. CDM has been confirmed on cucumber in a 200 sq ft research plot in New Castle County, DE. Incidence is 100%, severity is 30%. Estimated date of first symptoms is August 14. CDM has been confirmed on cucumber in a 1a research plot in Franklin County, MA. Incidence is 5%, severity is 5%. Estimated date of first symptoms is August 20. CDM has been confirmed on cucumber in a 1a research plot in Calhoun County, MI. Incidence is 1%, severity is 1%. Estimated date of first symptoms is August 19. CDM has been confirmed on cucumber in fields in Saginaw and Kalamazoo Counties, MI. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 20/21. CDM has been confirmed on cucumber in the sentinel plot in Ingham County, MI. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 21. There have been updates from other counties that have already reported CDM, indicating spread to a sentinel plot, field, or other planting in VA, PA, NY, and NC.

August 19
First report from IN. CDM has been confirmed on watermelon in a 100a field in Knox County, IN. Incidence is 2%, severity is 10%. Estimated date of first symptoms is August 16.

August 16
New reports from NY, PA, and MI. CDM has been confirmed on jack-o-lantern pumpkin in a 2a field in Suffolk County, NY. Incidence is 10%, severity is 1%. Estimated date of first symptoms is August 16. CDM has been reported on cantaloupe in a 0.25a field in York County, PA. Incidence is 60%, severity is 80%. EDFS is August 16. CDM has been confirmed on cucumber in fields in Allegan and Muskegon Counties, MI. Incidence is unknown, severity is unknown. Estimated date of first symptoms is August 16.

August 14
First reports from NY, MO, and DE. New reports from MD and PA. CDM has been confirmed on cucumber in a 0.25a field in Orange County, NY. Incidence is 10%, severity is unknown. Estimated date of first symptoms is August 12. CDM has been confirmed on cucumber in an approximately 1a field in Morgan County, MO. Incidence is 50%, severity is 100%. Estimated date of first symptoms is July 14. CDM has been reported on butternut squash in the sentinel plot in Sussex County, DE. Incidence is 0.01%, severity is 0.01%. Estimated date of first symptoms is August 14. CDM has been confirmed on cucumber, butternut squash, and cantaloupe in the sentinel plot in Prince George's County, MD. Incidence and severity are 100% and 3-5% on the cucumber and squash. Incidence and severity are much less on the cantaloupe, 0.01 and 0.1 respectively. EDFS is August 5 for all hosts. CDM has been confirmed on cucumber in a 1a research plot in Centre County, PA. Incidence is 1%, severity is 2%. EDFS is August 14.

August 10
New report from VA. CDM has been confirmed on cucumber in the sentinel plot in Suffolk County, VA. Incidence is 1%, severity is 1%. Estimated date of first symptoms is August 5.

August 8
First report from RI. New reports from SC, PA, and MD. CDM has been confirmed on butternut squash in a 0.6a field in Washington County, RI. Incidence is 80%, severity is 30%. Estimated date of first symptoms is August 4. CDM has been confirmed on cucumber in a 15 acre field in Aiken County, SC. Incidence is 50%, severity is 10%. Estimated date of first symptoms is July 30. CDM has been confirmed on jack-o-lantern pumpkin in a 0.5a field in Newberry County, SC. Incidence is 10%, severity is 10%. Estimated date of first symptoms is August 2. CDM has been confirmed in multiple locations on cucumber and jack-o-lantern pumpkin in Chester County, PA: cucumber in a 0.1a home garden, incidence 80% / severity 60% / estimated date of first symptoms is August 6; pumpkin in a 6a field, I 60%, S 30%, EDFS August 6; pumpkin in a 5a field, I 30%, S 30%, EDFS August 6; pumpkin in a 11a field, I 25%, S 30%, EDFS August 6. CDM has been confirmed on jack-o-lantern pumpkin in more locations in Lancaster County, PA. The pumpkin find is in a 5a field, I 75%, S 10%, EDFS August 6. ** previous cantaloupe report revealed to be angular leaf spot, deleted later **  CDM has been confirmed on jack-o-lantern pumpkin in a 6a field in Cecil County, MD. Incidence is 30%, severity is 25%. Estimated date of first symptoms is August 5.

August 5
New report from NC. CDM has been confirmed on cucumber in a 0.5a home garden in Yadkin County, NC. Incidence is 40%, severity is unknown. Estimated date of first symptoms is July 28.

August 3
First report from PA. New report from TN. CDM has been confirmed on pumpkin in a field in Lancaster County, PA. Incidence is unknown, severity is 40%. Estimated date of first symptoms is August 1. CDM has been confirmed on butternut squash and cucumber in the sentinel plot in Cumberland County, TN. Incidence is 50%, severity is 25%. Estimated date of first symptoms is July 26.

August 1
First report from TN. New reports from NC, NJ, and MD. CDM has been confirmed on cucumber in the sentinel plot in Knox County, TN. Incidence is 50%, severity is 50%. Estimated date of first symptoms is July 26. CDM has been confirmed on cucumber in the sentinel plot in Haywood County, NC. Incidence is 75%, severity is 30%. Estimated date of first symptoms is July 29. CDM has been confirmed on cucumber in a 7a field in Henderson County, NC. Incidence is 20%, severity is 15%. Estimated date of first symptoms is July 20. CDM has been confirmed on cucumber in a 0.1a field in Burke County, NC. Incidence is 100%, severity is 50%. Estimated date of first symptoms is July 22. CDM has been confirmed on butternut squash in a 20a field in Hunterdon County, NJ. Incidence is 10%, severity is 2%. Estimated date of first symptoms is July 28. CDM has been confirmed on acorn squash and kabocha pumpkin in the 1a sentinel plot in Hunterdon County, NJ. Incidence is 5%, severity is 2%. Estimated date of first symptoms is July 29. CDM has been confirmed on cucumber in the sentinel plot in Wicomico County, MD. Incidence is 0.01%, severity is 0.1%. Estimated date of first symptoms is July 29.

July 29
First report from MI. New report from NC. CDM has been confirmed on cucumber in a research plot in Berrien County, MI. Incidence and severity unknown. Estimated date of first symptoms is July 29. CDM has been observed on jack-o-lantern pumpkin in a field in Chowan County, NC. Incidence is 1%, severity is 1%. Estimated date of first symptoms is July 22.

July 27
New report from NC. CDM has been confirmed on cucumber in a 0.1a research plot in Wayne County, NC. Incidence is 15%, severity is 5%. Estimated date of first symptoms is July 16.

July 25
New reports from SC, NC, and AL. CDM has been confirmed on cucumber in the sentinel plot in Lexington County, SC. Incidence is 50%, severity is 10%. Estimated date of first symptoms is July 19. CDM has been confirmed on cucumber in the sentinel plot in New Hanover County, NC. Incidence is 25%, severity is 5%. Estimated date of first symptoms is July 23. CDM has been confirmed on acorn and butternut squash and cucumber in the sentinel plot in Elmore County, AL. Incidence is 100%, severity is 80%. Estimated date of first symptoms is June 26.

July 20
New reports from SC and AL. CDM has been confirmed on cucumber in a 0.5a field in Horry County, SC. Incidence is 20%, severity is 10%. Estimated date of first symptoms is July 15. CDM has been confirmed on butternut squash and cucumber in the 1a sentinel plot in Escambia County, AL. Incidence is 100%, severity is 27%. Estimated date of first symptoms is July 5.

July 18
New report from NJ. CDM has been confirmed on butternut squash in a 10a field in Gloucester County, NJ. Incidence is 5%, severity is 5%. Estimated date of first symptoms is July 17.

July 16
First report from MA. CDM has been confirmed on cucumber in a field in Barnstable County, MA. Incidence is 90%, severity is 25%. Estimated date of first symptoms is July 3.

July 11
New reports from VA. CDM has been confirmed on cucumber in the sentinel plots in Accomack and Chesterfield Counties, VA. Accomack: Incidence is 10%, severity is 5%. Estimated date of first symptoms is July 4. Chesterfield: Incidence is 5%, severity is 8%. Estimated date of first symptoms is July 8.

July 8
First report from NJ. CDM has been confirmed on cucumber in a 5a field in Salem County, NJ. Incidence is 1%, severity is 1%. Estimated date of first symptoms is July 3.

July 4
New report from AL. CDM has been confirmed on butternut squash and cucumber in the 1a sentinel plot in Chilton County, AL. Incidence is 50%, severity is 5%. Estimated date of first symptoms is June 25.

June 27
First reports from MD, AL, and VA. New report from NC. CDM has been confirmed on cucumber in a 30a field in Caroline County, MD. Incidence is 0.01%, severity is 3%. Estimated date of first symptoms is June 24. CDM has been confirmed on cucumber in a 1a sentinel plot in Lee County, AL. Incidence is 100%, severity is 25%. Estimated date of first symptoms is June 12. CDM has been confirmed on cucumber in a 1a sentinel plot in Macon County, AL. Incidence is 100%, severity is 28%. Estimated date of first symptoms is June 12. CDM has been confirmed on cucumber in a 2a field in Isle of Wight County, VA. Incidence is 60%, severity is 50%. Estimated date of first symptoms is June 20. CDM has been confirmed on cucumber in a 0.25a sentinel plot in Johnston County, NC. Incidence is 7%, severity is 1%. Estimated date of first symptoms is June 24.

June 22
New report from NC. CDM has been confirmed on cucumber in the sentinel plot in Edgecombe County, NC. Incidence is 5%, severity is 1%. Estimated date of first symptoms is June 17.

June 20
New reports from GA and NC. CDM has been confirmed on watermelon in a 35a field in Seminole County, GA. Incidence is 5%, severity is 30%. Estimated date of first symptoms is June 16. CDM has been confirmed on cucumber in a 30a field in Duplin County, NC. Incidence is 30%, severity is 20%. Estimated date of first symptoms is June 14. CDM has been confirmed on cucumber in a 20a field in Franklin County, NC. Incidence is 15%, severity is 5%. Estimated date of first symptoms is June 15. CDM has been confirmed on cucumber in a 33a field in Sampson County, NC. Incidence is 20%, severity is 20%. Estimated date of first symptoms is June 14.

June 17
New report from GA. CDM has been confirmed on watermelon in a 20a field in Ben Hill County, GA. Incidence is 5%, severity is 10%. Estimated date of first symptoms is June 14.

June 15
First report from NC. New report from SC. CDM has been confirmed on cucumber in a 9a field in Wilson County, NC. Incidence is 5%, severity is 10%. Estimated date of first symptoms is June 12. CDM has been confirmed on cucumber in a 0.1 acre research plot in Charleston County, SC. Incidence is 5%, severity is 10%. Estimated date of first symptoms is June 10.

June 13
New report from SC. CDM has been confirmed on cucumber in a home garden in Gadsden County, FL. Incidence is 10%, severity is 2%. Estimated date of first symptoms is June 5.

June 10
New reports from FL and SC. CDM has been confirmed on butternut squash in the sentinel plot in Gadsden County, FL. Incidence is 100%, severity is 15%. Estimated date of first symptoms is June 7. CDM has been confirmed on cucumber in a 17.5 acre field in Marion County, SC. Incidence is 10%, severity is 10%. Estimated date of first symptoms is June 5. CDM has been confirmed on watermelon in a 40 acre field in Alachua County, FL. Incidence is unknown, severity is unknown. Estimated date of first symptoms is May 22. CDM has been confirmed on watermelon in a field in Levy County, FL. Incidence is unknown, severity is unknown. Estimated date of first symptoms is May 20.

June 6
First report from SC. CDM has been confirmed on cucumber in a field in Bamburg County, SC. Incidence is unknown, severity is 5%. Estimated date of first symptoms is May 31.

May 25
First reports from GA. New report from FL. CDM has been confirmed on cucumber in a 30a field in Lowndes County, GA. Incidence is 5%, severity is 20%. Estimated date of first symptoms is May 20. CDM has been confirmed on cucumber in a 40a field in Colquitt County, GA. Incidence is 5%, severity is 20%. Estimated date of first symptoms is May 20. CDM has been confirmed on watermelon in a 50a field in Decatur County, GA. Incidence is 5%, severity is 20%. Estimated date of first symptoms is May 20. CDM has been observed on acorn squash, cantaloupe, and cucumber in the sentinel plot in Marion County, FL. Indicence and severity are around 1%. Estimated date of first symptoms is May 20.

May 23
Update from FL. CDM has been confirmed on butternut squash and watermelon in a research plot adjacent to the sentinel plot in Collier County, FL. Incidence is 10%, severity is <1%. Estimated date of first symptoms is May 10. CDM has been confirmed on more hosts in the sentinel plot in Collier County, FL including cantaloupe, acorn / butternut squash, and Thunder Kabocha squash. Incidences and severities are approximately 10% and <1%, respectively.

May 9
New report from FL. CDM has been confirmed on zucchini, cantaloupe, and watermelon in a 3 acre research plot in St. Lucie County, FL. Incidence is 90%, severity is 25%. Estimated date of first symptoms is May 2. CDM has also moved to several other hosts in the Hillsborough County, FL sentinel plot with considerable increase in overall incidence and severity.

April 22
New report from FL. CDM has been confirmed on cucumber in the sentinel plot in Collier County, FL. Incidence is 1%, severity is 1%. Estimated date of first symptoms is April 12.

April 9
New report from FL. CDM has been confirmed on butternut squash and cucumber in the sentinel plot in Hillsborough County, FL. Incidence is 1-2%, severity is 19%. Estimated date of first symptoms is April 5.

April 2
New report from FL. CDM has been confirmed on butternut squash, cantaloupe, and cucumber in the sentinel plot in Miami-Dade County, FL. Incidence is 0.1%, severity is 0.1%. Estimated date of first symptoms is April 1.

February 12
First report from the U.S. (FL). CDM has been confirmed on watermelon in a 2000 sq. ft. greenhouse in Hendry County, FL. Incidence is 15%, severity is 1%. Estimated date of first symptoms is February 4.