Skip to Main Content
Effects of nitrogen and phosphorus fertilizers on deer browsing and growth of young Douglas-fir.Author(s): Glenn L. Crouch; M.A. Radwan
Source: Res. Note PNW-RN-368. U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 15 p
Publication Series: Research Note (RN)
Station: Pacific Northwest Research Station
View PDF (283.29 KB)
DescriptionNitrogen and phosphorus were applied to young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees to determine their effects on deer browsing and tree growth. Nitrogen (N) proauced measurable responses in browsing of terminal shoots and growth of trees the first year, but effects were mostly negligible 2 years after treatments. No responses to phosphorus (P) were detected. Nitrogen and N+P treatments increased the concentration of N in tree foliage the first year, but amount of moisture, ash, calcium, and P were not affected after 2 years.
- 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.)
CitationCrouch, Glenn L.; Radwan, M.A. 1981. Effects of nitrogen and phosphorus fertilizers on deer browsing and growth of young Douglas-fir. Res. Note PNW-RN-368. U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 15 p
KeywordsBrowse preference, nitrogen fertilizer response, phosphate fertilizer response, Douglas-fir, Pseudotsuga menziesii
- Ammonium nitrate, urea, and biuret fertilizers increase volume growth of 57-year-old Douglas-fir trees within a gradient of nitrogen deficiency.
- Detecting response of Douglas-fir plantations to urea fertilizer at three locations in the Oregon Coast Range.
- Early survival and height growth of Douglas-fir and lodgepole pine seedlings and variations in site factors following treatment of logging residues.
XML: View XML