Early effects of spacing on loblolly pine in Hawaii

Craig D. Whitesell

Treesearch

Early effects of spacing on loblolly pine in Hawaii

Informally Refereed

Authors:

Craig D. Whitesell

Year:

1970

Type:

Research Note

Station:

Pacific Southwest Research Station

Source:

Res. Note PSW-RN-223. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p

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Download (PDF 219 KB): https://research.fs.usda.gov/download/treesearch/30835.pdf

Abstract

The optimum interval at which to plant loblolly pine (Pinus taeda L.) is being studied on the island of Maui, Hawaii. Four spacings are being tried: 6, 8, 10, and 12 feet. Measurements of trial plots in 1968-7 years after plots were set up-show that (a) survival rate exceeded 95 percent; (b) height growth averaged about 30 feet in all spacings; (c) average d.b.h. increases ranged from 5.3 inches at the 6-foot spacing to 7.8 inches in the 12-foot spacing; and (d) basal area ranged from 95 sq. ft. per acre in the 12-foot spacing to 193 sq. ft. per acre in the 6-foot spacing.

Keywords

Pinus taeda, Hawaii, planting density, growth response

Citation

Whitesell, Craig D. 1970. Early effects of spacing on loblolly pine in Hawaii. Res. Note PSW-RN-223. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p