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Seasonal Bud Low Temperature Exotherms Winter 2010-2011

Season lowest lethal temperature values for each region during winter of 2010-2011 are listed in separate tables below. Clicking on a variety name will bring up individual graphs of minimum/maximum temperatures and seasonal change in bud lethal temperatures. Seasonal Bud Mortality for each variety/site can also be found on the graphs. Finger Lakes

      ° Fahrenheit
Date Location Variety LT10 LT50 LT90
2011 East Keuka Cabernet Franc -9.9 -12.6 -15.2
    Cayuga White -9.8 -14.8 -20.2
    Concord -13.3 -19.6 -22.7
    Riesling -11.1 -13.6 -16.2
2011 East  Seneca Cabernet Franc -9.9 -11.4 -17.9
    Cayuga White -5.8 -15.2 -23.8
    Concord -18.0 -22.0 -25.1
    Riesling -9.6 -15.7 -20.4
2011 Geneva Concord -16.8 -22.6 -25.5
2011 West Cayuga Cabernet Franc -10.1 -13.4 -18.9
    Catawba -8.8 -18.4 -22.6
    Cayuga White -8.1 -17.3 -21.6
    Riesling -8.7 -13.6 -16.2
2011 West Keuka Cabernet Franc -8.1 -11.6 -15.2
    Cayuga White -11.4 -16.8 -22.4
    Concord -17.5 -22.5 -29.4
    Riesling -8.9 -17.0 -21.1
2011 West Seneca Cabernet Franc -5.5 -12.0 -15.8
    Cayuga White -8.7 -15.5 -21.5
    Concord -13.7 -22.2 -27.7
    Riesling -10.6 -15.8 -19.9

*Not sampled on 3/22/10.  **Final bud mortality from sample of 100 buds collected on 3/22/10

Hudson Valley

    ° Fahrenheit
Date Variety LT10 LT50 LT90
2011 Cab Franc 2.1 -10.5 -18.4
2011 Concord 0.7 -21.1 -24.7
2011 Noiret 7.5 -4.7 -18.4
2011 Riesling 2.3 -10.7 -16.8

*Final bud mortality from sample of 100 buds collected on 3/18/10

Lake Erie (Portland)

                                     Lowest   ° Fahrenheit
Date                                                             Variety LT10 LT50 LT90
2011 Portland  Cabernet Franc -7.4 -10.5 -13.9
2011 Fredonia Noiret -9.0 -14.5 -18.1
2011 CLEREL Niagara -9.0 -17.4 -18.1
2011 Portland Rt. 20 Concord -13.7 -19.7 -22.7
2011 NE Escarpment Concord -14.5 -17.6 -24.3
2011 NE Rt.5 Concord -9.8 -20.2 -21.8
2011 Forestville Concord -15.2 -24.3 -26.4
2011 Fredonia Rt. 20 Concord -18.0 -21.1 -29.2
2011 Portland Rt. 5 Concord -17.7 -22.9 -25.2
2011 Sheridan Rt. 5  Concord -16.2 -18.8 -27.5
2011 Portland Escarpment Concord -15.2 -23.8 -28.0
2011 NE Rt. 20 Concord -19.7 -21.6 -28.0

**Final bud mortality from sample of 100 buds collected on 3/17/10