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2008 Epidemic History

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2008 Cucurbit Downy Mildew Epidemic History

Through mid-April

FL: CDM reported in Collier, Palm Beach, and Miami-Dade counties in commercial fields on cucumber and squash.

April 14-20

FL: CDM reported in Hillsborough County sentinel plot on Big Max pumpkin and Straight 8 cucumber. Infection is <5%. CDM is in De Soto County commercial field of watermelon. Infection is 30%.

 

April 21-27

FL: CDM reported in Collier County sentinel plot on butternut squash, watermelon, Poinsett 76, and Straight 8 cucumber. Infection is 50% on cucumber, <1% on others.

 

April 28 - May 4

No new reports.

 

May 5 - 11

FL: CDM reported in Orange County sentinel plot on cantaloupe. Infection is <1%.

 

May 12 - 18

FL: CDM reported in Marion County sentinel plot on butternut squash. Infection is 5%.

 

May 19 - 25

FL: CDM reported in Marion County sentinel plot on Poinsett 76, cantaloupe, jumbo pumpkin, and Straight 8 cucumber. Infection is 10% on P76 and cantaloupe, 5% on pumpkin and Straight 8.

May 26 - June 1:

 First report from TX

TX: CDM reported in Harris County commercial field on watermelon. Infection is 1%.

FL: CDM reported in St. Lucie County research plot on pumpkin. Infection is 50%. CDM is in Miami – Dade County sentinel plot on acorn squash. Infection is <1%.

 

June 2 – 8:

 First report from GA

GA: CDM reported in Brooks County commercial field of cucumber. Infection is 0.5%.

 

June 9 – 15

FL: CDM reported in St. Johns County sentinel plot on both cucumber varieties. Infection is 20%.

 

June 16 – 22: First reports from LA, Canada, and SC

LA: CDM reported in Vernon Parish in the sentinel plot (straight 8) and in a commercial field (cantaloupe, infection 1%).

Ontario, Canada: CDM reported in Elgin County in a commercial field of cucumber. Infection is 10%.

SC: CDM reported in Charleston County sentinel plot on Straight 8 cucumber. Infection is 5%.

GA: CDM reported in Tift County research plot on cucumber. Infection is 2%.

FL: CDM in Gadsden County sentinel plot on butternut squash. Infection is 5%.

 

June 23 – 29

GA: CDM reported in Toombs County sentinel plot (Reidsville) on straight 8 cucumber and butternut squash. Infection is 10% for each.

 

June 30 – July 6: First report from MI

MI: CDM reported in Monroe County commercial field on cucumber. Infection is light.

GA: CDM reported in Tift County sentinel plot on Straight 8 cucumber and butternut squash. Infection is 0.1% each.

SC: CDM is in Sumter County sentinel plot on Straight 8 cucumber. Infection is 15%.

FL: CDM is in the St. Johns County sentinel plot on cantaloupe and butternut squash. Infection is 75%.

 

July 7 – July 13: First reports from NY, MS, OH, and NC

NY: CDM reported in Erie County commercial fields on cucumber (infection 2% and 5%) and in a home garden on acorn and butternut squash (infection 50%); in Niagara County commercial fields of cucumber (infection 2% and 5%); and in Ontario County commercial field of cucumber (infection 2%).

MS: CDM reported in Perry County sentinel plot on Straight 8 cucumber. Infection is <0.1%.

OH: CDM reported in Geauga County commercial field of cucumber. Infection is <1%.

NC: CDM reported in Lenoir County sentinel plot on Straight 8 cucumber (infection <1%); in Wilson County commercial field of cucumber (infection <1%); in Johnston County sentinel plot on Straight 8 (infection <1%); and in Nash County commercial field on pickling cucumber (infection 15%).

SC: CDM reported in Charleston County research plot on Poinsett 76 and butternut squash and in the Charleston County sentinel plot on butternut squash (infection 5%); in Sumter County sentinel plot on Poinsett 76 (infection 1%); and in Williamsburg County commercial field of cucumber (infection 15%).

LA: CDM reported in Vernon Parish sentinel plot on butternut squash (infection <1%).

TX: CDM reported in Waller County commercial field of watermelon. Infection is 30%.

MI: CDM reported in Allegan County commercial field of cucumber.

 

July 14 – 20: First report from DE.

DE: CDM reported in Sussex County sentinel plot on Poinsett 76 cucumber. Infection is <1%.

SC: CDM reported in Charleston County sentinel plot on acorn squash. Infection is 2%.

NC: CDM reported in Nash County home garden on cucumber (infection 30%); and in New Hanover County sentinel plot on Straight 8 cucumber (infection <1%).

LA: CDM reported in Vernon Parish in a home garden on cantaloupe and watermelon (infection 5%) and in the sentinel plot on Poinsett 76 (infection <1%); CDM reported in East Baton Rouge Parish sentinel plot on Hales Best cantaloupe (infection 1%) and Micky Lee watermelon (infection <1%).

Ontario, Canada: CDM reported in Norfolk County sentinel plot on Straight 8 (infection 1%) and in the Kent County sentinel plot on Straight 8, Poinsett 76, and cantaloupe (infection 5%).

OH: CDM reported in Lake, Medina, and Sandusky Counties in commercial fields of cucumber. Infection is <1% in Lake and Medina counties and 20% in Sandusky County.

 

July 21 – 27: First reports from MD, VA, and NJ

MD: CDM reported in the sentinel plot in Wicomico County on Straight 8 cucumber. Infection is 1%.

VA: CDM reported in Suffolk County in a commercial field of slicing cucumber (infection 10%); and in the Virginia Beach sentinel plot on Straight 8 (infection 3%).

NJ: CDM reported in Cumberland County commercial field of cucumber. Infection is 10%.

Ontario, Canada: CDM reported in Rodney County in the sentinel plot, on Poinsett 76 and cantaloupe. Infection is 1%.

OH: CDM reported in the Sandusky County sentinel plot on Straight 8 (infection 30%); in Wayne County in a home garden on cucumber (infection 70%); and in Holmes County commercial field of Dasher II cucumber (infection <1%).

FL: CDM reported in the St. John’s County sentinel plot on acorn squash. Infection is 50%.

NC: CDM reported in Haywood County commercial field of Dasher II cucumber (infection <20%); in Sampson County research plot on cucumber (infection 50%) and in the sentinel plot on Straight 8 (infection <1%); and in the New Hanover sentinel plot on Poinsett 76 (infection <1%).

 

July 28 – August 3: First reports from Quebec, Canada and PA.

Quebec, Canada: CDM reported in far southern Quebec in a commercial field of cucumber. Infection is 1%.

PA: CDM reported in the sentinel plot in Erie County on Straight 8 cucumber. Infection is <1%.

MI: CDM reported in Arenac, Saginaw, Tuscola (2), and Macomb Counties in commercial fields of cucumber. Infection is 5% or less in all fields.

NC: CDM reported in Sampson County sentinel plot on Poinsett 76 and butternut squash (infection is 5% for each); in Wake County in a home garden on Straight 8 (infection <1%); and in the New Hanover sentinel plot on cantaloupe (infection 5%).

NY: CDM reported in the Tompkins County sentinel plot on Poinsett 76 (infection 10%) and Straight 8 (infection 40%).

LA: CDM reported in East Baton Rouge Parish sentinel plot on Straight 8 cucumber. Infection is <0.1%.

MD: CDM reported in the Wicomico County sentinel plot on Poinsett 76. Infection is 1%.

OH: CDM reported in the Huron County sentinel plot on Straight 8. Infection is 5%.

 

August 4 – 6

NC: CDM report in Lenoir County sentinel plot on Poinsett 76 (infection 5%); in Rowan County in a commercial field of pickling cucumber (infection 8%); in the Johnston County sentinel plot on Poinsett 76 and butternut squash (infection 15% and 5%, respectively); and in the New Hanover sentinel plot on butternut squash (infection 5%).

OH: CDM reported in the Sandusky County sentinel plot on Poinsett 76 (infection 30%), cantaloupe (infection 20%) and in a commercial field of cucumber (10%); in the Wayne County sentinel plot on Poinsett 76 (25%) and  Straight 8 (50%) and a home garden on 12 Hills cucumber (infection 50%).

PA: CDM reported in the Erie County sentinel plot on Poinsett 76, infection 1%; and in Westmoreland County on Straight 8 cucumber in the sentinel plot and in a commercial field of slicing cucumber (30%)

VA: CDM reported in the Dinwiddie County sentinel plot on Straight 8 cucumber, infection 1%.

MI: CDM reported in a Monroe County home garden on cucumber, infection 10%.

NJ: CDM reported in the Cumberland County sentinel plot on Poinsett 76 (1%) and Straight 8 (5%).

 

August 7 -10

MI: CDM reported in the Clinton County sentinel plot on Straight 8 (1%).

NC: CDM reported in the Lenoir County sentinel plot on butternut squash, infection <1%; and in the New Hanover sentinel plot on pumpkin, infection 3%.

NY: CDM reported in commercial fields in Cortland County on cucumber, infection is 25%.

OH: CDM reported in the sentinel plots in Huron and Wayne Counties on cantaloupe. Infection is 10%.

SC: CDM reported in a commercial field of Poinsett 76 in York County. Infection is 10%.

VA: CDM reported in the sentinel plot in Accomack County on Poinsett 76 and butternut squash, infection <1% each; and in the sentinel plot in Virginia Beach on cantaloupe (5%), Poinsett 76 (10%), and butternut squash (1%).

 

August 11 – 13: First report from IN

IN: CDM reported in the Hancock County sentinel plot on Straight 8 cucumber. Infection is 20%.

DE: CDM reported in Sussex County … in a research plot of pickling cucumber (infection 10%) and in the sentinel plot on cantaloupe (infection 1%).

NJ: CDM reported in the sentinel plot in Cumberland County on cantaloupe (infection 1-5%) and in the sentinel plot in Hunterdon County on Straight 8 (infection <1%).

OH: CDM reported in Huron County on cucumber in several commercial fields, infection 50-60%; and in the Wayne County sentinel plot on Big Max pumpkin (infection 5%).

PA: CDM reported in Mifflin County in a commercial field of cucumber.

MI: CDM reported in Bay County in a commercial field of cucumber (infection 30%); in the sentinel plot in Ingham County on pumpkin (infection 30%); and in a commercial field of cucumber in Wayne County (10%).

SC: CDM reported in the sentinel plot in York County on Poinsett 76 (infection 70%) and Straight 8 (100%).

VA: CDM reported in the sentinel plots in Accomack County (cantaloupe, 1% infection) and Dinwiddie County (Poinsett 76, 5% infection).

 

August 14 – 17

MI: CDM reported in Clinton County sentinel plot on cantaloupe, infection <1%.

NC: CDM reported in the Rowan County sentinel plot on Straight 8, infection <1%; and in a commercial field of cucumber in Johnston County.

PA: CDM reported in the sentinel plot in Lancaster County on Straight 8 cucumber, infection <1%.

MD: CDM reported in the sentinel plot in Wicomico County on cantaloupe, infection 1%.

 

August 18 – 21: First report from CT

CT: CDM reported in a commercial field of butternut squash in Hartford County. Infection is 10%.

MI: CDM reported in the sentinel plot in Clinton County on Poinsett 76, infection <1%; in the sentinel plot in Ingham County on Straight 8 and Poinsett 76 (infection <1%); in a commercial field of cucumber in Bay County (infection <1%); in a Calhoun County home garden on cucumber (<1%); in a commercial field in Gratiot County on cucumber (3%); in a commercial field of cucumber in St. Clair County (<1%); and in the sentinel plot in Saginaw County on cantaloupe and Straight 8.

NJ: CDM reported in the sentinel plot in Cumberland County on watermelon, infection is 5%; and in the sentinel plot in Hunterdon County on Poinsett 76, infection <1%.

DE: CDM reported in the sentinel plot in New Castle County on Straight 8 cucumber. Infection is 2%.

PA: CDM reported in the sentinel plot in Erie County on cantaloupe. Infection is 25%.

OH: CDM reported in the Clark County sentinel plot on Straight 8. Infection is 25%.

 

August 22 – 24: First report from MA

MA: CDM reported in the sentinel plot in Hampshire County on Straight 8 cucumber. Infection is 1%.

NC: CDM reported in the sentinel plot in Lenoir County on acorn squash, infection <1%; in the New Hanover sentinel plot on acorn squash (5%); in the Rowan County sentinel plot on butternut squash (infection 10%); and in the Sampson County sentinel plot on pumpkin (<1%).

MI: CDM reported in a commercial field in Genessee County on cucumber (infection 5%); and in the sentinel plot in Monroe County on cantaloupe, Poinsett 76, and Straight 8 (infection 1% each).

OH: CDM reported in Huron County on cucumber in a research plot, infection is 50%; and in the Sandusky County sentinel plot on pumpkin, infection is 2%.

PA: CDM reported in the sentinel plot in Centre County on Straight 8, infection is <1%; and in a commercial field in Lackawanna County on cucumber, infection is 50%.

 

August 25 – 27

FL: CDM reported in a research plot in Jackson County, on pumpkin. Infection is 50%.

DE: CDM reported on Poinsett 76 in the sentinel plot in Newark County, infection is 1%.

GA: CDM reported on conquistador / slicing cucumber on a research plot in Tift County. Infection is 1%.

MA: CDM reported in commercial fields of cucumber in Hampshire County. One field shows 100% infection, the other one 20%.

MI: CDM reported in Cass County in a commercial field of cucumber. Infection is 20%.

NC: CDM reported in sentinel plots in Henderson County (Straight 8, infection 3%) and Rowan County (acorn squash, 10%).

OH: CDM reported on the watermelon in the sentinel plot in Wayne County. Infection is 25%.

PA: CDM reported in Blair County in a commercial field of cucumber, infection is 25%; in Centre County in a research plot of Marketmore cucumber (infection 40%) and in the sentinel plot on Poinsett 76 (<1%); and in a commercial field of cucumber in Luzerne County (infection 100%).

 

August 28 – 31

MD: CDM reported on Straight 8 cucumber in the sentinel plot in Prince Georges County. Infection is 1%.

MI: CDM reported in a commercial field of cucumber in Montcalm County, infection is 1%.

NC: CDM reported in a research plot in New Hanover County on squash (pepo). Infection is <1%.

NJ: CDM is now on the butternut squash in the Cumberland County sentinel plot. Infection is 5%.

NY: The sentinel plot in Suffolk County has CDM on Straight 8 cucumber. Infection is 20%.

PA: CDM reported in another commercial field of cucumber in Blair County. Infection is 20%.

CT: CDM reported in Fairfield, Litchfield, and New London Counties in commercial fields of cucumber. Infection is 100%. A field of butternut squash in Litchfield County also shows 100% infection.

 

September 1 – 4: First reports from CA and OK

CA: CMD reported from commercial fields of cucumber in San Benito and Santa Cruz Counties. Infections stated at 100%.

OK: CDM reported in a commercial field of watermelon in Custer County. Infection is 80%.

MI: CDM reported in the Saginaw County sentinel plot on Poinsett 76. Infection is 15%.

NC: CDM reported in Johnston County research plot on Straight 8 cucumber, infection is 5%; in a Sampson County research plot on cucumber and zucchini squash (10% and 25% infection, respectively); and in the Henderson County sentinel plot on cantaloupe and Poinsett 76 (3% infection each).

CT: CDM reported in a commercial field of pumpkin in Hartford County, infection is 1%; in a home garden in New Haven County, on cucumber, infection is 1%; and in a commercial field of cucumber in Tolland County (infection 1%)

MA: CDM reported in the sentinel plot in Franklin County on pumpkin and butternut squash. Infection is 100% each.

 

September 5 – 7

GA: CDM reported in Dodge County in a commercial field of cucumber, infection is 10%; and in the sentinel plot in Union County on Straight 8 and Poinsett 76 cucumber and acorn squash (infection 2%, 5%, 2% respectively).

MI: CDM reported in Kent County on cucumber in a home garden. Infection is <5%.

NC: CDM reported in a research plot in Johnston County on cantaloupe and Straight 8 cucumber. Infection is <1% each. CDM also reported in a research plot in Lenoir County on acorn squash. Infection is 5%.

OK: CDM reported in the sentinel plot in Caddo County on Straight 8 (<1% infection) and watermelon (2%).

MD: CDM now on Poinsett 76 in the sentinel plot in Prince Georges County. Infection is 5%.

 

September 8 – 10

MS: CDM reported in a research plot in Copiah County on Sorcerer pumpkin and butternut squash. Infection is 30% each.

NC: CDM now on watermelon in the sentinel plot in Lenoir County. Infection is <1%. The sentinel plot in New Hanover County is now positive for watermelon (3%); the sentinel plot in Rowan County now shows CDM on Poinsett 76 and Big Max (3% and 5%, respectively).

PA: CDM reported on commercial fields in Alleghany County on cucumber and pumpkin. Infection is 5%. The sentinel plot in Lancaster County has CDM on cantaloupe (10%), poinsett 76 (50%), and pumpkin (5%).

TX: CDM reported in Rusk County in a commercial field of watermelon. Infection is 100%.

DE: CDM reported on butternut squash in the sentinel plot in Sussex County. Infection is 3%.

IN: CDM reported on Poinsett 76 in the sentinel plot in Hancock County. Infection is 5%.

 

September 11 – 14: First report from KY

KY: CDM reported in Allen County on cucumber in a home garden (infection is 60%); and in the sentinel plot in Breathitt County on Straight 8 cucumber (infection 30%).

NC: CDM reported on pumpkin in a home garden in Wake County. Infection is 5%.

NJ: The Hunterdon County sentinel plot now has CDM on pumpkin. Infection is 10%.

NY: CDM reported from Rensselaer County in commercial fields. One area is Dasher II cucumber, 100% infected; another area 50% infected contains zucchini, butternut, pumpkin, and cucumber

VA: The Accomack County sentinel plot has CDM on pumpkin (infection 5%); the Dinwiddie County sentinel plot has CDM on cantaloupe and pumpkin (5-10%); the Virginia Beach sentinel plot has CDM on pumpkin (5%).

GA: CDM reported on cantaloupe, pumpkin, and butternut squash in the Union County sentinel plot. Infection is 80%.

MA: CDM reported on acorn and butternut squashes in the Franklin County sentinel plot. Infection is 1%.

OH: CDM reported in Portage County in a commercial field of cucumber. Infection is 100%.

 

September 15 – 17: First report from TN

TN: CDM reported in Cumberland County sentinel plot on Straight 8, cantaloupe, and Poinsett 76. Infection ranges from 1 – 10%.

DE: CDM now on pumpkin in the Sussex County sentinel plot. Infection is 1%.

OK: CDM reported on watermelon in the Atoka County sentinel plot. Infection is 10%.

TX: CDM reported in Atascosa County in a commercial field of cucumber and yellow squash. Infection is 100%.

VA: CDM reported in a commercial field of pumpkin in Northampton County. Infection is 5%. The sentinel plot in Accomack County now has CDM on watermelon. Infection is 5%.

MD: CDM reported on butternut squash, acorn squash, and pumpkin in the sentinel plot in Wicomico County. Infection is <5% for all crops.

NY: Three reports of CDM from Suffolk County. A commercial field of pumpkin is 80% infected. A research plot of pumpkin is also 80% infected. The sentinel plot is positive for CDM on butternut squash, 1% infection.

 

September 18 – 21

KY: CDM reported in the Breathitt County sentinel plot on Poinsett 76. Infection is 20%.

TN: CDM reported in the Robertson County sentinel plot on Straight 8, cantaloupe, and Poinsett 76. Infection is 40%.

FL: CDM reported in research plots in Marion and Alachua counties on Straight 8 cucumber. Infection is 60%.

MD: CDM reported in the Prince Georges County sentinel plot on cantaloupe. Infection is 5%.

NC: CDM reported in a commercial field of cucumber in Surry County. Infection is 100%.

OK: CDM reported on cantaloupe and butternut squash in the Caddo County sentinel plot. Infection is 60%.

SC: CDM reported on various cucurbits in a research plot in Charleston County. Infection is 35%.

TX: CDM reported on poinsett 76, cantaloupe, acorn squash, and watermelon in the Rusk County sentinel plot. Infection ranges from 5 to 30%.

 

September 22 – 28: First report from WI

WI: CDM reported in a commercial field of cucumber in Portage County. Infection is 10%.

NY: CDM reported on cantaloupe in the sentinel plot in Suffolk County. Infection is 25%.

TN: CDM reported on Straight 8 and watermelon in the sentinel plot in Madison County. Infection is 1-3 %.

IN: CDM reported on pumpkin in the sentinel plot in LaPorte County. Infection is 0.1%.

MA: CDM reported on Poinsett 76 in the sentinel plot in Franklin County. Infection is 1-5%.

VA: CDM reported on acorn squash in the sentinel plot in Accomack County (infection 5%); and on cucumber in a commercial field in Northampton County (infection 10%).

CA: CDM reported in a commercial field of cucumber in Santa Cruz County. Infection is 100%.

LA: CDM reported from commercial fields of cucumber in Tangipahoa Parish. Infection ranges from <1 to 15%.

OK: CDM reported in the sentinel plot in Payne County, on Straight 8 cucumber. Infection is 25%.

 

September 29 – October 5

MD: CDM reported on butternut squash in the sentinel plot in Prince Georges County. Infection is <1%.

DE: CDM reported in a commercial field of cucumber (pickling) in Kent County. Infection is 10%.

FL: CDM reported in the sentinel plot in Orange County on cantaloupe. Infection is 5%.

NY: CDM reported in a commercial field of C. moschata (Fairytale) in Suffolk County. Infection is 1%.

 

October 6 -12

FL: CDM reported in Collier County … in a research plot of watermelon (Fiesta, 1% infection), in a research plot of Micky Lee watermelon (1% infection), and in the sentinel plot on Straight 8 and pumpkin (1% infection). A commercial field in Hendry County of butternut and yellow squash is 80% infected. A commercial field of cucumber in Lee County shows 1% infection. The sentinel plot in Marion County has CDM on Straight 8, pumpkin, butternut and acorn squash, and cantaloupe. Infection is 10%.

GA: A commercial field of cucumber in Sumter County is 100% infected.

LA: A commercial field of cucumber in Tangipahoa Parish is 5% infected.

SC: CDM reported in a commercial field of cucumber in Bamburg County. Infection is 20%.

 

October 13 – 19

FL: The sentinel plot in Collier County has CDM on cantaloupe (2% infection) and butternut squash (5%). The Marion County sentinel plot has 20% infection on Poinsett 76. The Orange County sentinel plot has CDM on Straight 8 and butternut squash, infection at 10%.

TN: The Madison County sentinel plot has 5% infection on cantaloupe

LA: CDM reported in a commercial field of cucumber in Livingston Parish. Infection is 35%.

NJ: The sentinel plot in Cumberland County has CDM on pumpkin. Infection is 1%.

OK: The sentinel plot in Atoka County has CDM on Poinsett 76 (20% infection), Straight 8 (100%), cantaloupe (100%), and butternut squash (10%). A research plot in Atoka County has CDM on zucchini, butternut squash, acorn squash, bottle gourd, Dickenson pumpkin (all at 10% infection) and Baby Boo and Conn. Field pumpkin (both at 30%).

 

 

October 20 – 26

FL: The Collier County sentinel plot is now positive for CDM on acorn squash.

 

October 27 – November 2

FL: A commercial field of cucumber in Alachua County is 30% infected.

 

November 3 – End of growing season

TX: A research plot in Brazos County is 2% infected with CDM on watermelon.

FL: Commercial fields of cucumber and watermelon are 20% infected with CDM in Hillsborough and Manatee Counties. Commercial fields of cucumber and squash in Martin and Palm Beach Counties are 20% infected with CDM.