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Found 25 results for "H.Gratkowski"

Herbicides_for_shrub_and_weed_tree_control_in_western_oregon
Herbicides_for_shrub_and_weed_tree_control_in_western_oregon

by H.Gratkowski

1978 1 ed.
Toxicity of herbicides on three northwestern conifers
Toxicity of herbicides on three northwestern conifers

by H. Gratkowski

1961 1 ed.
Ponderosa pine -- Herbici... Sugar pine -- Herbicide i... Douglas fir -- Herbicide ...
Repeated spraying to control southwest Oregon brush species
Repeated spraying to control southwest Oregon brush species

by H. Gratkowski

1968 1 ed.
Brush -- Control -- Orego...
Toxicity of herbicides on three northwestern conifers
Toxicity of herbicides on three northwestern conifers

by H. Gratkowski

1961 1 ed.
Herbicides Toxicology Conifers
Reclamation of nonsprouting greenleaf manzanita brushfields in the Cascade Range
Reclamation of nonsprouting greenleaf manzanita brushfields ...

by H. Gratkowski

1968 1 ed.
Arctostaphylos. Aerial spraying and dusti... Herbicides -- Cascade Ran...
Pregermination treatments for redstem ceanothus seeds
Pregermination treatments for redstem ceanothus seeds

by H. Gratkowski

1973 2 ed.
Germination Seeds Ceanothus
Aerial spray adjuvants for herbicidal drift control
Aerial spray adjuvants for herbicidal drift control

by H. Gratkowski

1973 2 ed.
Herbicides Aerial spraying and dusti... Spraying and dusting resi...
Herbicidal drift control
Herbicidal drift control

by H. Gratkowski

1974 2 ed.
Herbicides Aerial spraying and dusti... Environmental aspects
The future role of chemicals in forestry
The future role of chemicals in forestry

by Robert F. Tarrant

1973 2 ed.
Herbicides Forest management Pesticides
Aerial application equipment for herbicidal drift reduction
Aerial application equipment for herbicidal drift reduction

by R. E. Stewart

1976 2 ed.
Aerial spraying and dusti... Helicopters Herbicides
Survival of Douglas-fir seedlings sprayed with atrazine, terbacil, and 2,4-D
Survival of Douglas-fir seedlings sprayed with atrazine, ter...

by H Gratkowski

1979 3 ed.
Herbicides Testing Douglas fir
Repeated spraying to control southwest Oregon brush species
Repeated spraying to control southwest Oregon brush species

by H. Gratkowski

1968 1 ed.
Brush Control
Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.
Heat as a factor in germination of seeds of Ceanothus veluti...

by H. Gratkowski

1962 1 ed.
Ceanothus velutinus. Buckhorn -- Seeds.
Survival of Douglas-fir seedlings sprayed with atrazine, terbacil, and 2,4-D
Survival of Douglas-fir seedlings sprayed with atrazine, ter...

by H. Gratkowski

1979 3 ed.
Herbicides Testing Douglas fir
Herbicides for shrub and weed tree control in western Oregon
Herbicides for shrub and weed tree control in western Oregon

by H Gratkowski

1978 1 ed.
Herbicides Testing
Silvicultural use of herbicides in Pacific Northwest forests
Silvicultural use of herbicides in Pacific Northwest forests

by H Gratkowski

1975 1 ed.
Herbicides Forests and forestry
Midsummer foliage sprays on salmonberry and thimbleberry
Midsummer foliage sprays on salmonberry and thimbleberry

by H. Gratkowski

1971 1 ed.
Salmonberry -- Control --... Rubus parviflorus -- Cont... Brush -- Control -- Orego...
Reclamation of nonsprouting greenleaf manzanita brushfields in the Cascade Range
Reclamation of nonsprouting greenleaf manzanita brushfields ...

by H. Gratkowski

1968 1 ed.
Arctostaphylos Herbicides Aerial spraying and dusti...
Effects of herbicides on some important brush species in southwestern Oregon
Effects of herbicides on some important brush species in sou...

by H. Gratkowski

1959 1 ed.
Herbicides -- Oregon, Wes... Brush -- Control -- Orego...
Effects of herbicides on some important brush species in southwestern Oregon
Effects of herbicides on some important brush species in sou...

by H. Gratkowski

1959 1 ed.
Herbicides Control Brush