Cucurbit Downy Mildew ipmPIPE epidemic updates

The Cucurbit Downy mildew ipmPIPE forcasts the likelihood of a CDM outbreak and reports outbreaks of the disease.

  • August 10, 2019: New report from VA. CDM has been confirmed in Suffolk County, VA.
  • August 8, 2019: First report from RI. New reports from SC, PA, and MD. CDM has been confirmed on butternut squash in a 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 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, on cucumber in a home garden, incidence 80% / severity 60% / estimated date of first symptoms is August 6; on pumpkin in a field, Incidence is 60%, severity is 30%, Estimated date of first symptoms August 6; pumpkin in a field, Incidence is 30%, severity is 30%, Estimated date of first symptoms August 6; pumpkin in a field, Incidence is 25%, severity is 30%, Estimated date of first symptoms August 6. CDM has been confirmed on jack-o-lantern pumpkin in more locations in Lancaster County, PA. The pumpkin find is in a field.
  • August 6., 2019: CDM has been confirmed on jack-o-lantern pumpkin in a field in Cecil County, MD. Incidence is 30%, severity is 25%. Estimated date of first symptoms is August 5.
  • August 5, 2019: New report from NC. CDM has been confirmed on cucumber in a home garden in Yadkin County, NC. Incidence is 40%, severity is unknown. Estimated date of first symptoms is July 28.
  • August 3, 2019: 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, 2019: 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 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 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 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 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, 2019: 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, 2019: New report from NC. CDM has been confirmed on cucumber in a research plot in Wayne County, NC. Incidence is 15%, severity is 5%. Estimated date of first symptoms is July 16.
  • July 25, 2019: 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, 2019: 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 sentinel plot in Escambia County, AL. Incidence is 100%, severity is 27%. Estimated date of first symptoms is July 5.
  • July 18, 2019: New report from NJ. CDM has been confirmed on butternut squash in a field in Gloucester County, NJ. Incidence is 5%, severity is 5%. Estimated date of first symptoms is July 17.
  • July 16, 2019: 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.

Cucurbit Downy mildew forecasts apply to disease development from airborn transport of spores. View the Cucurbit Downy Mildew Epidemic History for 2019 where you will find all occurrences of the disease in 2019.

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