Fertilization and spacing effects on growth of planted ponderosa pine
By: P.H. Cochran, R.P. Newman, and James W. Barrett.
Contributors: Newman, R. P.; Barrett, James W. 1922-; Pacific Northwest Research Station (Portland, Or.)
Series: Research note PNW -- RN-500.; Research note PNW -- 500.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest Research Station
Published: 1991
Place of publication: Portland, Or
Language: eng
Number of pages: 13
Subjects: Ponderosa pine -- Thinning -- Oregon.; Ponderosa pine -- Oregon -- Growth.; Trees -- Fertilizers -- Oregon.; Forest soils -- Fertilization -- Oregon.
Notes: Caption title.

"February 1991."

Includes bibliographical references (p. 12-13)