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 ...
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https://bibliotecadigital.infor.cl/handle/20.500.12220/7676
McDonald, Philip M.
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Fiddler, G.O.
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Harrison, H.R.
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[Repeated manual release in a young plantation: effect on douglas-fir seedlings, hardwoods, shrubs, forbs, and grasses]
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Repeated manual release in a young plantation: effect on douglas-fir seedlings, hardwoods, shrubs, forbs, and grasses
