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Seasonal Bud Low Temperature Exotherms 2011- 2012

Season lowest lethal temperature values for each region during winter of 2011-2012 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.

NYS Agricultural Experiment Station (Weekly samples)

 
Date Location Variety LT10 LT50 LT90  
       Lowest Season LT  
2012 Geneva Cabernet Franc -6.2 -10.8 -12.4  
    Noiret -12.7 -17.5 -20.6  
    Concord -17.2 -24.8 -29.2  
    Riesling -10.3 -13.6 -16.5  

Finger Lakes - Commercial Vineyards

Date Location Variety LT10 LT50 LT90
2012 East Keuka Cabernet Franc -8.5 -10.7 -14.6
    Cayuga White -6.2 -12.4 -15.5
    Concord -10.0 -16.7 -22.7
    Riesling -9.6 -13.4 -16.6
2012 East Seneca Cabernet Franc -5.1 -9.7 -13.0
    Cayuga White -5.0 -11.0 -14.2
    Concord -13.3 -18.5 -21.2
    Riesling -9.0 -14.1 -18.6
2012 West Keuka Cabernet Franc -5.4 -9.2 -12.5
    Cayuga White -8.3 -16.5 -21.9
    Concord -15.2 -19.8 -25.7
    Riesling -10.0 -13.3 20.0
    Niagara -11.1 -16.2 -19.3
           
2012 West Seneca Cabernet Franc -5.9 -9.5 -11.8
    Cayuga White -3.4 -11.9 -15.8
    Concord -7.6 18.5 -22.5
    Riesling -11.3 -14.1 -17.6
    Niagara -10.7 -16.6 -18.5

Lake Erie Region  (West To East)

Date Location Variety   LT10 LT50 LT90
2012 Portland Cab Franc   -5.0 -9.9 -11.9
2012   Riesling   -5.8 -11.2 -13.7
2012   Niagara   -11.9 -16.6 -18.9
2012   Concord   -5.0 -13.4 -18.1
2012   Traminette   -6.1 -13.8 -16.4
2012   Noiret   -6.7 -9.5 -13.6

Hudson Valley

Date Location Variety   LT10 LT50 LT90
2012 Hudson Cab Franc   3.4 -6.7 -11.6
2012   Concord   -9.2 -19.7 -22.5
2012   Noiret   -14.8 -18.0 -20.7
2012   Riesling   -4.7 -11.6 -15.5
2012   Traminette    -11.2   -15.9 -18.6

 

Bud hardiness testing in other regions:

Thanks to the Lake Erie Regional Grape Program, Inc. and the New York Wine and Grape Foundation for funding this project. Special thanks to Lynn Mills and Markus Keller of Washington State University for sharing the template used to generate the graphs.