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    Author(s): Leo A. Isaac
    Date: 1955
    Source: PNW Old Series Research Notes No. 122, p. 1-9
    Publication Series: Research Note (RN)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (1.3 MB)


    Interest among foresters in forest tree improvement has increased rapidly in recent years. Geneticists have learned that some individual trees greatly excel their neighbors in desirable characteristics, and that some entire stands are superior to other stands of the same species in a general locality. They have learned that many of the desirable tree characteristics are hereditary in nature, and they have reasoned and shown that man may profit greatly by planned improvement of forest trees.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Isaac, Leo A. 1955. Tentative guides for the selection of plus trees and superior stands in Douglas-fir. PNW Old Series Research Notes No. 122, p. 1-9

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