Forest tree improvement in California-1970

M. Thompson Conkle

Treesearch

Forest tree improvement in California-1970

Informally Refereed

Authors:

M. Thompson Conkle

Year:

1972

Type:

Research Note

Station:

Pacific Southwest Research Station

Source:

Res. Note PSW-RN-275. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest and Range Experiment Station. 4 p

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Download (PDF 566 KB): https://research.fs.usda.gov/download/treesearch/32833.pdf

Abstract

Foresters in California were surveyed in 1970 to determine the extent of artificial regeneration and tree improvement efforts in the State. Seeding of Douglas-fir was the prevailing practice in the North Coast. Inland areas were being planted with conifers, including ponderosa, Jeffrey, Monterey, and sugar pines, Douglas-fir, and red and white firs. Manpower devoted to tree improvement programs amounted to 8.7 man-years. It was being used chiefly to select superior trees and to establish seed orchards of Douglas-fir and ponderosa and sugar pines. These tree improvement efforts fall far short of that required to study and improve California's timber resources.

Keywords

tree improvement, Pinus ponderosa, Pseudotsuga menziesii, Abies spp, California, artificial regeneration, superior trees, seed orchards

Citation

Conkle, M. Thompson. 1972. Forest tree improvement in California-1970. Res. Note PSW-RN-275. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest and Range Experiment Station. 4 p