Fertilization and spacing effects on growth of planted ponderosa pine.

P.H. Cochran; R.P. Newman; James W. Barrett

doi:10.2737/PNW-RN-500

Treesearch

Fertilization and spacing effects on growth of planted ponderosa pine.

Informally Refereed

Authors:

P.H. Cochran, R.P. Newman, James W. Barrett

Year:

1991

Type:

Research Note

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RN-500

Source:

Res. Note PNW-RN-500. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 16 p

Download (PDF 446 KB)

Download (PDF 446 KB): https://research.fs.usda.gov/download/treesearch/25103.pdf

Abstract

Fertilizer placed in the planting hole increased height growth of ponderosa pine (Pinus ponderosa Dougl. ex Laws.) early in the life of the plantation. Later broadcast applications of fertilizer may have had little effect on growth. Wider spacings produced larger trees but less volume per acre than narrower spacings after average tree height exceeded 7 feet. Fertilization produced larger trees and more volume per acre at each spacing.

Keywords

Nutrient availability, indirect fertilization effects, root development

Citation

Cochran, P.H.; Newman, R.P.; Barrett, James W. 1991. Fertilization and spacing effects on growth of planted ponderosa pine. Res. Note PNW-RN-500. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 16 p