Seven chemicals fail to protect ponderosa pine from Armillaria root disease in central Washington
By: Gregory M. Filip and Lewis F. Roth.
Contributors: Roth, Lewis F.; Pacific Northwest Research Station (Portland, Or.)
Series: Research note PNW -- RN-460.; Research note PNW -- 460.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
Published: 1987
Place of publication: [Portland, Or.]
Language: eng
Subjects: Ponderosa pine; Trees -- Diseases and pests -- Washington (State); Armillaria
Notes: Caption title.

Distributed to depository libraries in microfiche.

"July 1987"--P. [8].

Bibliography: p. 6-[8].