The Influence of Containerized Stock Type on the Growth and Survival of Douglas-fir Seedlings
Selecting an appropriate stock type is an important reforestation decision affecting the success and cost of reforestation projects. This study was designed to quantify the effect of three containerized stock types on Douglas-fir seedling survival and growth at two sites in the Central Coastal Range during the initial 8 years of establishment. The stock types tested included styro-8 (S-8), styro-15 (S-15), and styro-60 (S-60). Initial size differences at the time of planting disappeared after 8 years of growth such that tree sizes were similar across stock types. The mortality rate of the S-60 stock type was 15 percent greater than the S-8 and S-15 stock types at both sites. Site conditions affected the growth of seedlings, and, after eight seasons, the more mesic conditions on one of the sites enabled trees to be, on average, 0.6 m taller, with diameters at breast height 0.8 cm larger compared with those growing on the drier site.
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Author(s): Maxwell G. Wightman, Carlos A. Gonzalez-Benecke, Eric J. Dinger
Publication: Tree Planters' Notes - Volume 61, Number 2 (2018)
Event:
Joint Annual Meeting of the Western Forestry and Conservation Nursery Association and the Pacific Northwest Reforestation Council
2017 - Corvallis, OR
Volume: 61
Number: 2
