Pumice particle bridging and nutrient levels affect lodgepole pine and ponderosa pine seedling development
By: by P.H. Cochran.
Contributors: Sandberg, David V., 1944-; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research notes PNW -- 150.; Research note PNW -- 150.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1971
Place of publication: Portland, Or
Language: eng
Number of pages: 10
Subjects: Ponderosa pine -- Oregon -- Seedlings -- Growth; Forest soils -- Oregon -- Composition; Lodgepole pine -- Oregon -- Seedlings -- Growth
Notes: Cover title.

"May 1971."

Includes bibliographical references.