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Nitrogen, corn, and forest genetics: the agricultural yield strategy-implications for Douglas-fir management.Author(s): Roy R. Silen
Source: Gen. Tech. Rep. PNW-GTR-137. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 20 p
Publication Series: General Technical Report (GTR)
Station: Pacific Northwest Research Station
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DescriptionAgricultural yield strategy simply aims to increase number of grain bearing stalks per acre. Forestry strategies look to thinning, fertilizer, and genetics, each to provide gains. The agricultural strategies applied to Douglas-fir appear to be impractical for long rotations. Concern is expressed for commitments to perpetual inputs of materials and energy to keep a yield above the land’s carrying capacity. Adapted natural populations are the major resource in keeping a yield improvement strategy trouble-free.
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CitationSilen, Roy R. 1982. Nitrogen, corn, and forest genetics: the agricultural yield strategy-implications for Douglas-fir management. Gen. Tech. Rep. PNW-GTR-137. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 20 p
KeywordsYield strategy, tree improvement, agriculture, Douglas-fir, Pseudotsuga menziesii
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