Effects of nitrogen and phosphorus fertilizer on planted ponderosa pine in west-central Idaho

Glenn L. Jacobsen; Richard A. Thompson; Russell A. Ryker

Treesearch

Effects of nitrogen and phosphorus fertilizer on planted ponderosa pine in west-central Idaho

Informally Refereed

Authors:

Glenn L. Jacobsen, Richard A. Thompson, Russell A. Ryker

Year:

1977

Type:

Research Note

Station:

Rocky Mountain Research Station

Source:

Res. Note INT-RN-296. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 5 p.

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Download (PDF 986 KB): https://research.fs.usda.gov/download/treesearch/65270.pdf

Abstract

Nitrogen and phosphorus fertilizers were applied to the soil surface in a 2-0 ponderosa pine plantation on the Payette National Forest in west-central Idaho. The study area was located in an Abies grandis/Acer glabrum habitat type on a basalt soil. The fertilizer treatments did not increase survival or growth of the trees, nor did they increase the amount of competing vegetation. The only significant response was a reduction in survival caused by the high level nitrogen treatments.

Keywords

fertilization, Pinus ponderosa, plantation, nitrogen, phosphorus

Citation

Jacobsen, Glenn L.; Thompson, Richard A.; Ryker, Russell A. 1977. Effects of nitrogen and phosphorus fertilizer on planted ponderosa pine in west-central Idaho. Res. Note INT-RN-296. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 5 p.