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    Author(s): Richard E. Miller
    Date: 1969
    Source: Res. Note PNW-RN-99. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p
    Publication Series: Research Note (RN)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (230.86 KB)

    Description

    Survival and apparent vigor of Douglas-fir seedlings were compared after: (1) hoe planting of root-trimmed seedlings; (2) as above plus manual site preparation; (3) auger planting of untrimmed seedlings. After two growing seasons, surviving with method (3) but not (2) was significantly greater than survival with method (1). After the third season, survival differences were no longer statistically significant.ยท Survival percentages were 40, 52, and 60 for methods (1), (2), and (3), respectively; and 50, 85, and 67 percent of the survivors were judged healthy. These results are discussed in relation to survival and cost data from other trials of auger versus hoe planting.

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    Citation

    Miller, Richard E. 1969. Can auger planting improve survival of Douglas-fir seedlings? Res. Note PNW-RN-99. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p.

    Keywords

    survival, Douglas-Fir, seedlings

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