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Forestry
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Defoliation -- Idaho
Remove constraint Subject: Defoliation -- Idaho
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Western spruce budworm -- Idaho
Remove constraint Subject: Western spruce budworm -- Idaho
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Western spruce budworm -- Montana
Remove constraint Subject: Western spruce budworm -- Montana
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1. [Article] Western spruce budworm egg masses for predicting defoliation potential in the northern region : progress report
An attempt was made to predict western spruce budworm defoliation using egg counts from plots in the Douglas-fir type east of the Continental Divide in Montana, the Douglas-fir type west of the Continental ...Citation -
2. [Article] Western spruce budworm defoliation trend relative to weather in the Northern Region, 1969-1979
Western spruce budworm defoliated area in the Northern Region has differed significantly across three discrete geographic zones during the past decade. Aerially visible defoliation in northern Idaho increased ...Citation