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    Author(s): Walter G. Dahms
    Date: 1950
    Source: PNW Old Series Research Notes No. 65, p. 1-3
    Publication Series: Research Note (RN)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (520 KB)


    What effect does a dense cover of manzanita and snowbrush have on the establishment and growth of ponderosa pine reproduction? Observations on this point on the Pringle Falls Experimental Forest resulted in the following conclusions: (1) the brush did not significantly affect the early establishment of pine seedlings, but (2) it sharply reduced the growth of established seedlings, and (3) manzanita (Arctostaphylos sp.) is much more severe in its affect on growth of pine seedlings than snowbrush (Ceanothus velutinus).

    Publication Notes

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    Dahms, Walter G. 1950. The effect of manzanita and snowbrush competition on ponderosa pine reproduction. PNW Old Series Research Notes No. 65, p. 1-3

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