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    Author(s): Raymond D Ratliff; Renee G. Denton
    Date: 1991
    Source: Res. Note PSW-RN-412. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 5 p
    Publication Series: Research Note (RN)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (1.6 MB)

    Description

    Preparing for planting conifer seedlings reduces competition for site resources but creates poor range conditions. bare soil, low plant cover, adn little forage do not support forest grazing programs. At Boyd Hill on the Modoc National Forest, in California, several regeneration sites were prepared in 1988. Early in 1989 they were planted with ponderosa pine (Pinus ponderosa) seedlings. On five plantations that summer, live plant cover averaged just 2.5 percent. Except for shrubs, which covered 1.4 percent of the surface, cover values for plant groups (perennial grasses, annual grasses, perennial forbs, and annual forbs) were less than 0.5 percent each. Non-plant area included 53 percent bare soil and 34 percent litter. Rock, wood, and gravel each occupied around 3.5 percent of the surface. For the surface layer, average soil properties on the plantations were: bulk density—1.05 g/cm3, organic matter—11.7 percent, soil water—8.1 percent, and water absorption—0.98 min/cm.

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    Citation

    Ratliff, Raymond D; Denton, Renee G. 1991. Site preparation + 1 year: effect on plant cover and soil properties. Res. Note PSW-RN-412. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 5 p

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    Keywords

    Modoc National Forest, Big Valley Ranger District, plantation, fire, herbaceous vegetation, soil

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