Brush control on forest lands with emphasis on promising methods for the Pacific Northwest: a review of selected references.

Abstract

Brush encroachment on forest land is greatly reducing the amount of wood grown in forests of the Pacific Northwest. Reliable estimates show that brush has reduced the productivity of more than one-fourth of the forest land of southwestern Oregon. Red alder alone, which is a commercial tree on some areas but a weed species on others, accounts for poor conifer stocking on another two million acres in the Douglas-fir region of Oregon and Washington. Brush also occupies a large area of ponderosa pine land east of the Cascade Range.

Citation

Dahms, Walter G.; James, George A. 1955. Brush control on forest lands with emphasis on promising methods for the Pacific Northwest: a review of selected references. USDA Forest Service PNW Old Series Research Paper No. 13: 1-81