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Douglas-fir seedlings on the Arcata Resource Area, Bureau of Land Management, U.S. Department of the Interior, in central coastal California, were released by chain sawing and grubbing competing vegetation around them at different frequencies (0, 2, and 3 grubbings) over a 5-year period. After 5 ...


McDonald, Philip M.Fiddler, G.O.Harrison, H.R.[Repeated manual release in a young plantation: effect on douglas-fir seedlings, hardwoods, shrubs, forbs, and grasses]Repeated manual release in a young plantation: effect on douglas-fir seedlings, hardwoods, shrubs, forbs, and grasses

The density and development of greenleaf manzanita, snowbrush, goldenbush (rabbitbrush), and graminoids were evaluated in a young California red fir plantation in northern California from 1986 through 1995. Manual grubbing and herbicides created treatment regimes that lasted for 3 to 6 years and ...


McDonald, Philip M.Fiddler, G.O.[Treatment duration and time since disturbance affect vegetation development in a young California red fir plantation]Treatment duration and time since disturbance affect vegetation development in a young California red fir plantation

A 12-year-old ponderosa pine plantation on the Tahoe National Forest in northern California was mechanically treated with a Hydro-Ax in an attempt to increase the survival and growth of the planted seedlings. Other release methods were not feasible because the shrubs in the mixed-shrub community ...


Fiddler, G.O.McDonald, Philip M.[Mechanical and Chemical Release in a 12-Year-Old Ponderosa Pine Plantation]Mechanical and Chemical Release in a 12-Year-Old Ponderosa Pine Plantation

On an average site in northern coastal California, a tanoak-mixed shrub community was given several treatments (manual release one, two, and three times; a combination chainsaw and cut surface chemical treatment; two foliar chemicals; and a tank mix of the two chemicals) to study its development ...


McDonald, Philip M.Fiddler, G.O.[Ecology and development of douglas-fir seedlings and associated plant species in a coast range plantation]Ecology and development of douglas-fir seedlings and associated plant species in a coast range plantation

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