Can auger planting improve survival of Douglas-fir seedlings? Res

Richard E. Miller

Treesearch

Can auger planting improve survival of Douglas-fir seedlings? Res

Informally Refereed

Authors:

Richard E. Miller

Year:

1969

Type:

Research Note

Station:

Pacific Northwest Research Station

Source:

Res. Note PNW-RN-99. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p

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Abstract

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.· 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.

Keywords

survival, Douglas-Fir, seedlings

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.