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Natural Regeneration of Ponderosa Pine on Scarified Group Cuttings in Central Idaho

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Thirty-six group clearcuts (0.25 to 3.0 acres) were scarified just before the seedfall of a bumper cone crop in 1958. Germination and seedling survival were observed for 3 years on scarified and comparable unscarified sites representing a variety of aspects and slopes. Scarification increased germination and seedling survival. Three years after scarification, stocking on milacre quadrats averaged 40 percent on the 36 scarified areas but only 3 percent on unscarified areas. Aspect affected seedling survival on scarified sites. The ratio of disseminated seed to established seedlings ranged from 27:1 on aspects in the northeast are to 55:1 on aspects in the southwest are and 290:1 on ridges. scarification resulted in adequate stocking on aspects in the northeast are but results were inconsistent on aspects in the southwest are.

Document Type: Journal Article

Affiliations: Research foresters at the Intermountain Forest and Range Expt. Sta., Forest Service, U.S. Dept. Agric., field unit at Boise, Idaho

Publication date: July 1, 1965

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

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