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Donald L Copes

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Cilt sonuçları

Influence of cambial contact length on graft survival and leader elongation in Douglas-fir

Donald L. Copes · Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture

Sayfa sayısı yok · 1967

Douglas fir / Grafting

Effects of water suspension and wet-dry cycling on fertility of Douglas-fir pollen

Donald L Copes · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station

Sayfa sayısı yok · 2000

Pollen / Douglas fir

Sitka spruceRooting Sitka spruce from southeast AlaskaDonald L Copes

Rooting Sitka spruce from southeast Alaska

Donald L Copes · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station

Sayfa sayısı yok · 1987

Sitka spruce

HarvestingEffects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shakerDonald L Copes

Effects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shaker

Donald L Copes · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

Sayfa sayısı yok · 1985

Seeds / Conifers / Douglas fir / Pruning / Harvesting

GraftingSelection and propagation of highly graft-compatible Douglas-fir rootstocks, a case historyDonald L Copes

Selection and propagation of highly graft-compatible Douglas-fir rootstocks, a case history

Donald L Copes · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

Sayfa sayısı yok · 1981

Roots (Botany) / Douglas fir / Grafting

Forest machineryTree shaking machine aids cone collection in a Douglas-fir seed orchardDonald L Copes

Tree shaking machine aids cone collection in a Douglas-fir seed orchard

Donald L Copes · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

Sayfa sayısı yok · 1983

Seeds / Seed orchards / Trees / Forest machinery

GraftingBark scoring problem grafts in five douglas-fir seed orchardsDonald L. Copes

Bark scoring problem grafts in five douglas-fir seed orchards

Donald L. Copes · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest Research Station

12 sayfa · 1989

Douglas fir / Grafting

GraftingA simple method for detecting incompatibility in 2-year-old grafts of Douglas-firDonald L. Copes

A simple method for detecting incompatibility in 2-year-old grafts of Douglas-fir

Donald L. Copes · Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture

Sayfa sayısı yok · 1967

Douglas fir / Grafting

GraftingGraft incompatibility in Pinus contortaDonald L. Copes

Graft incompatibility in Pinus contorta

Donald L. Copes · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

Sayfa sayısı yok · 1975

Lodgepole pine / Grafting

GraftingEffect of graft type on 6-month scion survival of field grown Douglas-fir graftsDonald L. Copes

Effect of graft type on 6-month scion survival of field grown Douglas-fir grafts

Donald L. Copes · Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service

Sayfa sayısı yok · 1969

Douglas fir / Grafting

GraftingEffect of month of grafting on douglas-fir graft compatibilityDonald L. Copes

Effect of month of grafting on douglas-fir graft compatibility

Donald L. Copes · Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture

Sayfa sayısı yok · 1973

Douglas fir / Grafting

GraftingEffect of date of grafting on survival in Douglas-firDonald L. Copes

Effect of date of grafting on survival in Douglas-fir

Donald L. Copes · Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service

Sayfa sayısı yok · 1970

Douglas fir / Grafting

GraftingInterstock trials with grafted coastal Douglas-firDonald L. Copes

Interstock trials with grafted coastal Douglas-fir

Donald L. Copes · Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture

Sayfa sayısı yok · 1971

Douglas fir / Propagation / Grafting