Preparing areas for planting conifer seedlings reduces competition for site resources but creates poor range conditions. Bare soil, low plant cover, and Little forage do not support forest grazing p rograms. 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 swnmer, 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 4 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/cm l , organic matter-l 1.7 percent, soil water-8.1 pereent, and water a~ sorption-O.98 min/em.RelrievalTerms: Modoc National Forest, Big Va1 4 ley Ranger District, plantation, fire, herbaceous vegetation, soil lated 10 erosion 0/wild-Ia1ld soils jn cenlral Washing.
Ratliff, Raymond D.; Denton, Renee G. 1995 Effects of season-long, deferred-rotation, and rest-rotation grazing, on ponderosa pine (Pinus ponderosa Doug!. ex Laws.) seedling growth and herbaceous vegetation control were studied in regeneration sites at Boyd Hill, Modoc National Forest, California. Seedlings were planted in 1989. Pine seedling survival and damage did not differ, but the seedlings were significantly taller, with longer leaders with season-long grazing than without grazing. Treatment comparisons for plant group and non-plant percent cover differed only for litter and bare soil, but cover and composition of bottlebrush squirreltail (Elymus elY11loides [Raf.] Swezey) were greater without grazing.
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