United States Department of Agriculture
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Percent Mortality of Bareroot Scotch Pine Seedlings Due to Exposure of Roots Before Planting

Weather Hour Air Temperature (Degrees F.) 0 Minutes Exposure 2 Minutes Exposure 5 Minutes Exposure 10 Minutes Exposure 20 Minutes Exposure 40 Minutes Exposure 80 Minutes Exposure
Percent Mortality
Cloudy 9 to 11 a.m. 48.2 12 50 62 64 69 73 88
Cloudy 12 to 2 p.m. 50.0 12 49 64 66 69 83 93
Cloudy 3 to 5 p.m. 53.6 23 54 65 75 83 94 99
Rainy 9 to 11 a.m. 60.8 8 40 42 46 56 63 66
Hot, clear 11 a.m. to 1 p.m. 73.4 55 80 88 90 94 100 100

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Last Modified: 08/20/2008