Author: United States. Forest Service. Northern Region
Publisher:
ISBN:
Category : Spruce budworm
Languages : en
Pages : 20
Book Description
Western spruce budworm in Idaho and Montana, 1976
Author: United States. Forest Service. Northern Region
Publisher:
ISBN:
Category : Spruce bud-worm
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category : Spruce bud-worm
Languages : en
Pages : 12
Book Description
Western Spruce Budworm in Idaho and Montana, 1976
Author: United States. Forest Service. Northern Region
Publisher:
ISBN:
Category : Spruce budworm
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Spruce budworm
Languages : en
Pages : 20
Book Description
Western Spruce Budworm Management Plan (ID,MT)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
Book Description
The Western Spruce Budwordm Problem in Idaho and Montana, 1976
Author: ESTADOS UNIDOS. Department of Agriculture
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Potential for Defoliation by Western Spruce Budworm in Douglas-fir Stands in Montana, 1976
Author: Scott Tunnock
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 20
Book Description
Reldan Insecticide Field-tested on Western Spruce Budworm, Payette National Forest, Idaho, 1977
Author: George P. Markin
Publisher:
ISBN:
Category : Insecticides
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : Insecticides
Languages : en
Pages : 8
Book Description
Aerial Field Tests of Five Insecticides on Western Spruce Budworm in Idaho and Montana, 1978-1980
Author: George P. Markin
Publisher:
ISBN:
Category : Aerial spraying and dusting in forestry
Languages : en
Pages : 6
Book Description
Each of five insecticides was applied at two or three application rates by helicopter to 20-ha plots. Effectiveness of each application rate against western spruce budworm (Choristoneura occidentalis Freeman) was judged by cornparing larval population reduction at I5 or 20 days after treatment against populations in untreated check plots. Performance of each insecticide was then compared with the levels of control normally obtained with two registered insecticides. carbaryl and acephate (90 + pct) usually used for western spruce budworrn control. Maximum population reduction from sulprofos (58 pct), phosmet (59 pet). and from the growth regulator BAY SIR- 8514 (58 pet), at all application rates tested was below the acceptable minimum of 90 + percent population reduction. Methomyl reduced populations 92.3 percent at 0.28 kg a.i./ha and 94.0 percent at 0.56 ke a.i./ha. Permethrin at 0.11 kg a.i.iha reduced the population by 93.9 percent. Methonyl and permethrin at these application rates appeared to be as effective as the registered insecticides acephate and carbaryl.
Publisher:
ISBN:
Category : Aerial spraying and dusting in forestry
Languages : en
Pages : 6
Book Description
Each of five insecticides was applied at two or three application rates by helicopter to 20-ha plots. Effectiveness of each application rate against western spruce budworm (Choristoneura occidentalis Freeman) was judged by cornparing larval population reduction at I5 or 20 days after treatment against populations in untreated check plots. Performance of each insecticide was then compared with the levels of control normally obtained with two registered insecticides. carbaryl and acephate (90 + pct) usually used for western spruce budworrn control. Maximum population reduction from sulprofos (58 pct), phosmet (59 pet). and from the growth regulator BAY SIR- 8514 (58 pet), at all application rates tested was below the acceptable minimum of 90 + percent population reduction. Methomyl reduced populations 92.3 percent at 0.28 kg a.i./ha and 94.0 percent at 0.56 ke a.i./ha. Permethrin at 0.11 kg a.i.iha reduced the population by 93.9 percent. Methonyl and permethrin at these application rates appeared to be as effective as the registered insecticides acephate and carbaryl.
Potential for Defoliation by Western Spruce Budworm in Northern Idaho and Montana, 1977
Author: Scott Tunnock
Publisher:
ISBN:
Category : Aerial surveys in forestry
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Aerial surveys in forestry
Languages : en
Pages : 28
Book Description
Relationships Between Western Spruce Budworm Outbreak Frequency and Soil Characteristics in Idaho and Montana
Author: William P. Kemp
Publisher:
ISBN:
Category :
Languages : en
Pages : 62
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 62
Book Description
Managing Trees and Stands Susceptible to Western Spruce Budworm
Author: Martha H. Brookes
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 130
Book Description
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 130
Book Description