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Filtering by: Date issued sim 1972-08 Subject Douglas fir -- Growth

Thermoperiods and soil temperatures as they affect growth and dormancy of Douglas-fir seedlings of different geographic origin

Creator:

Lavender, Denis P., Overton, W. Scott, and Oregon State University. Forest Research Laboratory

Abstract:

The effects of a range of thermoperiods and soil temperatures upon growth of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were studied. The seeds, of varieties glauca and menziesii, came from eight widely separated areas. Plants from both varieties made maximum growth with soil and air temperatures between 18 and 24...

Resource Type:

Technical Report