Yazar

H Gratkowski

14 cilt bulundu.

Cilt sonuçları

Toxicity of herbicides on three northwestern conifers

H. Gratkowski · Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture

24 sayfa · 1961

Herbicides / Toxicology / Conifers / Plants / Effect of herbicides on

Douglas firSurvival of Douglas-fir seedlings sprayed with atrazine, terbacil, and 2,4-DH Gratkowski

Survival of Douglas-fir seedlings sprayed with atrazine, terbacil, and 2,4-D

H Gratkowski · Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

Sayfa sayısı yok · 1979

Herbicides / Testing / Douglas fir

Reclamation of nonsprouting greenleaf manzanita brushfields in the Cascade Range

H. Gratkowski · Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service

Sayfa sayısı yok · 1968

Arctostaphylos / Herbicides / Aerial spraying and dusting in forestry

Repeated spraying to control southwest Oregon brush species

H. Gratkowski · Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture

Sayfa sayısı yok · 1968

Brush / Control

Spraying and dusting residues in agricultureAerial spray adjuvants for herbicidal drift controlH. Gratkowski

Aerial spray adjuvants for herbicidal drift control

H. Gratkowski · Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture

18 sayfa · 1973

Herbicides / Aerial spraying and dusting in forestry / Spraying and dusting residues in agriculture

Environmental aspects of HerbicidesHerbicidal drift controlH. Gratkowski

Herbicidal drift control

H. Gratkowski · Pacific Northwest Research Station, U.S. Dept. of Agriculture, Forest Service

12 sayfa · 1974

Herbicides / Aerial spraying and dusting in agriculture / Environmental aspects / Safety measures / Environmental aspects of Herbicides

Pregermination treatments for redstem ceanothus seeds

H. Gratkowski · Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service

10 sayfa · 1973

Germination / Seeds / Ceanothus

Midsummer foliage sprays on salmonberry and thimbleberry

H. Gratkowski · Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture

Sayfa sayısı yok · 1971

Herbicides / Salmonberry / Control / Testing / Plants

Brush problems in southwestern Oregon

H. Gratkowski · Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture

53 sayfa · 1961

Control / Brush

Brush -- Control -- Oregon, Western.Effects of herbicides on some important brush species in southwestern OregonH. Gratkowski

Effects of herbicides on some important brush species in southwestern Oregon

H. Gratkowski · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

33 sayfa · 1959

Herbicides -- Oregon, Western. / Brush -- Control -- Oregon, Western.

Diseases and pestsHerbicides for grass and forb control in Douglas-fir plantationsH Gratkowski

Herbicides for grass and forb control in Douglas-fir plantations

H Gratkowski · Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

Sayfa sayısı yok · 1976

Herbicides / Grasses / Douglas fir / Diseases and pests

TestingHerbicides for shrub and weed tree control in western OregonH Gratkowski

Herbicides for shrub and weed tree control in western Oregon

H Gratkowski · Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

48 sayfa · 1978

Herbicides / Testing

Forests and forestrySilvicultural use of herbicides in Pacific Northwest forestsH Gratkowski

Silvicultural use of herbicides in Pacific Northwest forests

H Gratkowski · U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

44 sayfa · 1975

Herbicides / Forests and forestry

Buckhorn -- Seeds.Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.H. Gratkowski

Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

H. Gratkowski · Yayınevi bilinmiyor

122 sayfa · 1962

Ceanothus velutinus. / Buckhorn -- Seeds.