Author: D. B. CahillPublisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
Aerially Observed Defoliation by Western Spruce Budworm in 1982 and Predictions for Defoliation in 1983
Author: D. B. CahillEffects of Insecticide Treatments on Subsequent Defoliation by Western Spruce Budworm in Oregon and Washington
Author: Katharine A. SheehanPublisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 60
Book Description
Sampling Populations of Western Spruce Budworm and Predicting Defoliation on Douglas-fir in Eastern Oregon
Author: Valentine M. CarolinPublisher:
ISBN:
Category : Aerial photography in forestry
Languages : en
Pages : 44
Book Description
Historical Patterns of Spruce Budworm Defoliation and Bark Beetle Outbreaks in North American Conifer Forests
Author: David W. WilliamsPublisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 40
Book Description
This atlas presents maps of historical defoliation by the eastern and western spruce budworms and historical outbreaks of the mountain and southern pine beetles during the past half century. The maps encompass various regions of the conterminous United States and eastern Canada. This publication also serves as documentation for an extended set of digital maps, which are available on our website. The digital maps are useful for investigating spatial dynamics of insect populations and for providing pest disturbance inputs to spatially explicit forest simulation models.
Susceptibility of Stands to Defoliation by Western Spruce Budworm on the Payette National Forest, Idaho
Author: Defoliation by Western Spruce Budworm in Oregon and Washington from 1980 Through 1994
Author: Katharine A. SheehanPublisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 40
Book Description
Differential Defoliation of Neighboring Douglas-fir Trees by Western Spruce Budworm
Author: Geral I. McDonaldPublisher:
ISBN:
Category : Douglas fir
Languages : en
Pages : 12
Book Description
Effects of Insecticide Treatments on Subsequent Defoliation by Western Spruce Budworm in Oregon and Washington: 1982-92
Author: Forest Insect and Disease Conditions
Author: Effects of Insecticide Treatments on Subsequent Defoliation by Western Spruce Budworm in Oregon and Washington
Author: Katharine A. SheehanPublisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 0
Book Description