Donald L Copes
Identifiers
- Open LibraryOL4303640A
Top Subjects
- Grafting (1)
- Douglas fir (1)
- Roots (Botany) (1)
- Trees -- Seeds (1)
- Seed orchards -- United States (1)
- Forest machinery -- United States (1)
- Douglas fir -- Pruning (1)
Books by Donald L Copes
Total count: 5
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Selection and propagation of highly graft-compatible Douglas-fir rootstocks, a case historyU.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station1981-01-01
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Tree shaking machine aids cone collection in a Douglas-fir seed orchardU.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station1983-01-01
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Effects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shakerU.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station1985-01-01
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Rooting Sitka spruce from southeast AlaskaU.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station1987-01-01
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Population Genetics of Forest TreesIsland Press1992-01-01