Browsing Oregon Explorer by Subject "Aerial spraying"

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Pilot experiment of forest fertilization during an outbreak of the western spruce budworm in Northeastern Oregon

Mason, Richard R.; Wickman, B.E.; Paul, H.G.; Torgersen, T.R.; Pacific Northwest Research Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1998-05)

Mixed-conifer stands of grand fir (Abies grandis (Dougl. ex D. Don) Lindl., Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco), and ponderosa pine (Pinus ponderosa Dougl. ex Laws.) were fertilized with nitr ...