Search results for: Copes, Donald L.
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1
Selection and propagation of highly graft-compatible Douglas-fir rootstocks, a case history
Authors: Copes, Donald L.
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1981Physical Description: 8 pages : illustrations ; 28 cm.Holdings: Loading…
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2
Rooting Sitka spruce from southeast Alaska
Authors: Copes, Donald L.
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1987Physical Description: 8 pages ; 28 cm.Holdings: Loading…
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3
Tree shaking machine aids cone collection in a Douglas-fir seed orchard
Authors: Copes, Donald L.
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1983Physical Description: 8 pages : illustrations ; 28 cm.Holdings: Loading…
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4
Effects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shaker
Authors: Copes, Donald L.
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1985Physical Description: 8 pages : illustrations ; 28 cm.Holdings: Loading…
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5
Graft incompatibility in Pinus contorta
Authors: Copes, Donald L.
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1975Physical Description: 9 pages : illustrations ; 27 cm.Holdings: Loading…
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6
Effects of water suspension and wet-dry cycling on fertility of Douglas-fir pollen
Authors: Copes, Donald L.
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2000Physical Description: 9 pages : illustrations., Also available via Internet from the PNRS web site (PDF file only). Address as of 10/20/00: http://www.fs.fed.us/pnw/pubs/rn527.pdf; current access is available via PURL.Holdings: Loading…Connect to online resource - All users (Federal Depository Library Program Persistant URL)
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7
Bark scoring problem grafts in five douglas-fir seed orchards: a case history
Authors: Copes, Donald L.
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest Research Station, 1989Physical Description: 12 pages.Holdings: Loading…
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8
Selection and propagation of highly graft-compatible Douglas-fir rootstocks, a case history
Authors: Copes, Donald L.
Published: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1981Physical Description: 1 online resource (8 pages) : illustrations.Holdings: Loading…Connect to online resource - All users (Federal Depository Library Program Persistant URL)
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9
Vacuum collection of Douglas-fir pollen for supplemental mass pollinations
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1991Other Authors: “…Copes, Donald L.…”
Physical Description: 8 pages : illustrations ; 28 cm.Holdings: Loading…
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10
Improved laboratory methods for testing graft compatibility in Douglas-fir
Authors: Gnose, Charles E.Other Authors: “…Copes, Donald L.…”
Published: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1975
Physical Description: 14 pages : illustrations ; 27 cm.Holdings: Loading…
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