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The Effects of Biogeoclimatic Properties on Water and Nitrogen Availability and Douglas-Fir Growth and Fertilizer Response in the Pacific Northwest
Coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) is the predominant plantation species of the western Pacific Northwest, although soil and climate characteristics vary throughout the region. This study investigated the effects of water and nitrogen availability on Douglas-fir growth throughout the region. Sixty ...
Foliar nutrient levels in Douglas-fir plantations 25 years after stump removal and fertilization to control Phellinus weirii
Removal of stumps and fertilization after harvesting have been proposed to reduce root diseases in succeeding stands. Potential impacts such as compaction and loss of soil C or N could limit the use of this technique. This research examined forest soils and foliar nutrient levels in five Pacific Northwest stands 22-29 years ...