Specific Heat and Heat of Respiration for 
Horticultural Crops Grown in North Carolina

                                    Respiration
                                   _____________  Approximate
                  Specific Heat    Cool   Warm    Lowest Safe
Commodity          (BTU/lb/F)      (BTU/lb/hour)  Temperature (F)

Apples, summer        0.87         0.018  0.340      30-40
Apples, fall          0.87         0.012  0.240      30-40
Asparagus             0.94         0.245  2.523      32-35
Beans, butter         0.73         0.123  0.716      37-41
Beans, string         0.91         0.161  0.885      40-45
Beets, topped         0.90         0.028  0.092      32
Blueberries           0.86         0.028  0.748      31-32
Brambles              0.87         0.092  0.711      31-32
Broccoli              0.92         0.092  1.376      32
Cabbage               0.94         0.023  0.257      32
Cantaloupes           0.94         0.025  0.305      36-41
Cucumbers             0.97         0.119  0.170      50-55
Grapes                0.86         0.014  0.179      31-32
Green Onions          0.91         0.096  0.704      32
Leafy Greens          0.90         0.100  1.034      32
Okra                  0.92         0.257  1.583      45-50
Peaches               0.91         0.023  0.466      31-32
Peas, garden          0.79         0.177  1.651      36
Peas, field           0.73         0.160  1.554      40
Peppers               0.94         0.046  0.252      45
Potatoes              0.84         0.028  0.055      38
Squash                0.95         0.161  0.751      41-50
Strawberries          0.92         0.069  0.872      32
Sweet Corn            0.79         0.186  1.644      32
Tomatoes, mature gr.  0.94         0.030  0.197      55-70
Tomatoes, ripening    0.95         0.067  0.188      46-50
Turnips               0.93         0.034  0.130      32
Watermelons           0.94         0.034  0.110      40