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Seasonal Bud Low Temperature Exotherms 2013-2014

Season lowest lethal temperature values for each region during winter of 2013-2014 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)

Note: We will continue weekly samples at Geneva until bud burst. Full seasonal bud hardiness trends can be seen on the hyperlinked graphs

Date Location Variety LT10 LT50 LT90 BudMortality%
4/15/2014 Geneva Cabernet Franc 13.3 8.2 0.7 63
LowestTemp  -12.0 F Noiret 19.9 15.1 11.6  
    Concord 14.6 10.4 -5.1  
    Riesling 14.4 7.7 3.2 82

Finger Lakes - Commercial Vineyards

Note: As of 3/17/2014, we discontinued bud collections in commercial Finger Lakes vineyards.
Final bud mortality, determined by cutting and examining 100 buds per site, is listed in the last
column, and also on the graph.

Date Location Variety LT10 LT50 LT90 Bud Mortality %
3/3/14 East Keuka Cabernet Franc -7.6 -13.1 -18.0 16
LowestTemp    -13.9 Cayuga White -8.7 -12.3 -15.2 48
    Concord -16.6 -23.4 -27.3 19
    Riesling -4.8 -13.1 -17.7 59
3/3/14 East Seneca Cabernet Franc -9.2 -13.0 -16.2 15
LowestTemp    - 8.0 Cayuga White -7.1 -13.1 -18.4 45
    Concord -12.9 -22.3 -25.3 1
    Riesling -7.1 -13.7 -17.4  
3/3/14 West Keuka Cabernet Franc -9.1 -12.2 -15.9 89
LowestTemp    -13.0 Cayuga White -9.3 -16.4 -22.7 86
    Concord -17.4 -23.6 -28.2 17
    Riesling -6.3 -11.0 -16.3 93
3/3/14 West Seneca Cabernet Franc -8.9 -13.0 -17.6 48
LowestTemp    -13.0 Cayuga White -7.5 -12.6 -15.6  
    Concord -16.8 -23.6 -26.6 6
    Riesling -5.2 -11.8 -16.4 79
3/3/14 West Riesling -6.0 -12.3 -18.5 93
LT  -4.9 Canandaigua Concord -19.0 -22.0 -24.5 15
3/3/14 West Cayuga Cab Franc -8.8 -12.7 -16.3 44
LowestTemp    -6.7 Catawba -13.4 -17.8 -21.8 9
    Cayuga White -9.9 -13.6 -16.6 22
    Riesling -8.9 -12.8 -16.4 84

Lake Erie Region  (West To East)

Date Location Variety LT10 LT50 LT90 BudMortality%
3/24/14 Portland Cab Sauv -4.6 -8.2 -9.7  
LowestTemp    -10.1 Riesling        
    Niagara -5.2 -8.7 -11.4  
    Concord -7.8 -12.2 -18.6  
    Traminette -8.9 -10.3 -13.0  
    Seyval -2.9 -8.4 -12.4  

Hudson Valley

Date Location Variety LT10 LT10 LT50 BudMortality%
3/10/14 Hudson Cab Franc -6.9 -9.2 -11.6 14
LowestTemp    -3.9 Concord -13.2 -16.1 -18.8 0
    SauvBlanc -6.5 -9.9 -12.5 32
    Riesling -8.3 -10.8 -13.7 24
    Traminette -11.2  -14.1 -15.9 38
    Pinot noir -4.9 -7.8 -9.6 19