Skip to Main Content
Ponderosa pine needle length: an early indicator of release treatment effectivenessAuthor(s): Philip M. McDonald; Carl N. Skinner; Gary O. Fiddler
Source: Canadian Journal of Forest Research 22: 761-764
Publication Series: Scientific Journal (JRNL)
PDF: Download Publication (324.67 KB)
DescriptionGrowth responses of ponderosa pine seedlings range from fast to slow after release and often demonstrate the effectiveness of the prescribed treatments. Although several morphological parameters have have identified as being sensitive to competition, no link to future growth and treatment effectiveness has been made. Shrubs and grasses in four 1- to 3-year-old ponderosa pine (Pinus ponderosa Dougl. ex Laws. var. ponderosa) plantations in northern California were treated by several manual and chemical release techniques that resulted in differing amounts of competition to ponderosa pine seedlings. Differing amounts of competition in turn affected pine growth and led to a wide range of stem heights, diameters, and needle lengths. Correlation coefficients indicated that 1 year-old needles. measured 2-4 years after treatment, were positively associated with pine height and diameter up to 7 years after treatment and potentially beyond. Consequently, length of 1-year-old needles may provide a useful early indication of longer term treatment effectiveness.
- You may send email to email@example.com 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.
CitationMcDonald, Philip M.; Skinner, Carl N.; Fiddler, Gary O. 1992. Ponderosa pine needle length: an early indicator of release treatment effectiveness. Canadian Journal of Forest Research 22: 761-764.
Keywordsvegetation management, silviculture, regeneration, release treatment
- Spatial patterns of ponderosa pine regeneration in high-severity burn patches
- Management of ponderosa pine nutrition through fertilization
- Multiaged silviculture of ponderosa pine
XML: View XML