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Darroll D Skilling

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Scleroderris canker of northern conifers

Darroll D. Skilling · U.S. Govt. Print. Off.]

Sayfa sayısı yok · 1972

Conifers / Canker (Plant disease) / Diseases and pests

How to identify and control rhabdocline and Swiss needlecasts of Douglas-fir

Darroll D. Skilling · U.S. Dept. of Agriculture, North Central Forest Experiment Station

Sayfa sayısı yok · 1983

Douglas fir / Diseases and pests / Fungal diseases of plants

Growth of swamp conifers following an improvement cut

Darroll D. Skilling · Lake States Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture

10 sayfa · 1959

Swamp ecology / Forests and forestry

World directory of forest pathologists and entomologists

Darroll D. Skilling, Harold O. Batzer · USDA Forest Service

210 sayfa · 1995

Forest entomologists / Directories / Forest pathologists

TreesHow to identify and control Rhizosphaera needlecastDarroll D Skilling

How to identify and control Rhizosphaera needlecast

Darroll D Skilling · Dept. of Agriculture, Fores Service, North Central Forest Experiment Station

Sayfa sayısı yok · 1978

Diseases and pests / Spruce / Pine / Trees

Scotch pineBrown spot needle diseaseDarroll D. Skilling

Brown spot needle disease

Darroll D. Skilling · North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture

19 sayfa · 1974

Diseases and pests / Scots pine / Scotch pine

Diseases and pestsHow to identify scleroderris cankerDarroll D Skilling

How to identify scleroderris canker

Darroll D Skilling · Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

Sayfa sayısı yok · 1979

Conifers / Canker (Plant disease) / Diseases and pests

Diseases and pestsControlling Lophodermium needlecast on Scotch pine Christmas treesDarroll D. Skilling

Controlling Lophodermium needlecast on Scotch pine Christmas trees

Darroll D. Skilling · North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture

Sayfa sayısı yok · 1973

Control / Scots pine / Lophodermium / Diseases and pests

Gremmeniella abietinaBiology and control of scleroderris canker in North AmericaDarroll D Skilling

Biology and control of scleroderris canker in North America

Darroll D Skilling · U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

19 sayfa · 1986

Scleroderris canker / Gremmeniella abietina

Diseases and pestsA serological procedure for identifying strains of Gremmeniella abietinaDarroll D Skilling

A serological procedure for identifying strains of Gremmeniella abietina

Darroll D Skilling · U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

15 sayfa · 1983

Gremmeniella abietina / Trees / Diseases and pests

Scleroderris cankerScleroderris canker on national forests in upper Michigan and northern WisconsinDarroll D. Skilling

Scleroderris canker on national forests in upper Michigan and northern Wisconsin

Darroll D. Skilling · North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture

10 sayfa · 1966

Diseases and pests / Red pine / Jack pine / Scleroderris canker

Forest productivityFinancial possibilities of pruning as applied to red pine in lower MichiganDarroll D. Skilling, University of Michigan. School of Natural Resources.

Financial possibilities of pruning as applied to red pine in lower Michigan

Darroll D. Skilling, University of Michigan. School of Natural Resources. · Yayınevi bilinmiyor

46 sayfa · 1954

Pruning / Red pine / Forest productivity

ControlPocket guide to red pine diseases and their managementThomas H. Nicholls, Darroll D. Skilling, North Central Forest Experiment Station (Saint Paul, Minn.)

Pocket guide to red pine diseases and their management

Thomas H. Nicholls, Darroll D. Skilling, North Central Forest Experiment Station (Saint Paul, Minn.) · U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

41 sayfa · 1990

Red pine / Diseases and pests / Biological control / Handbooks, manuals / Control