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Browsing by Subject "Douglas fir -- Frost resistance"
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(1987-02-27)Two-year-old Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] seedlings of two seed sources raised in three nurseries in Oregon and Washington were tested for differences in frost hardiness from September 1985 to March ...
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(1989-03-27)A microclimatology study was conducted on a high elevation clearcut near the summit of Mt. Ashland in southwest Oregon to evaluate the effects of frost on Douglas-fir seedling growth and survival. Frost and low temper ...
Now showing items 1-2 of 2
