Skip to Main Content
Wrenching Douglas-fir seedlings in August: immediate but no lasting effects.Author(s): William I. Stein
Source: Res. Pap. PNW-RP-317.Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 12 p.
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
View PDF (1.37 MB)
DescriptionEffects of wrenching Douglas-fir seedlings in August of their second season in the D. L. Phipps State Forest Nursery, Elkton, Oregon, were determined by periodic samplings to learn of changes in phenological, morphological, and growth characteristics. Initial effects of wrenching moderated by January when seedlings were lifted; both wrenched and unwrenched seedlings had grown substantially larger. Survival and growth of seedlings were good during the first 5 years after outplanting in droughty skeletal soil on southeast and northeast slopes in the South Umpqua River drainage of southwestern Oregon, and no significant differences were found between wrenched and unwrenched seedlings. A difference in total tree height on the two slopes was caused by greater browsing on the southeast slope.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationStein, William I. 1984. Wrenching Douglas-fir seedlings in August: immediate but no lasting effects. Res. Pap. PNW-RP-317.Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 12 p.
KeywordsRegeneration, wrenching, nursery practices, seedling growth, browsing (-regeneration, Douglas-fir, Pseudotsuga menziesfi
- Improving planting stock quality—the Humboldt experience
- Douglas-fir survival and growth in response to spring planting date and depth
- Responses of southeast Alaska understory species to variation in light and soil environments
XML: View XML