Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Regional Variation in Growth Response of Coastal Douglas-Fir to Nitrogen Fertilizer in the Pacific Northwest.
Author Peterson, C. E. ; Hazard, J. W. ;
CORP Author NSI Technology Services Corp., Corvallis, OR.;Corvallis Environmental Research Lab., OR.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/293;
Stock Number PB91-146498
Additional Subjects Plant growth ; Forestry ; Dose-response relationships ; Coastal regions ; Comparative evaluation ; Tables(Data) ; Graphs(Charts) ; Nitrogen fertilizers ; Reprints ; Douglas fir ; Pseudotsuga menziesii ; Tsuga heterophylla ; Pacific Northwest Region(United States)
Library Call Number Additional Info Location Last
NTIS  PB91-146498 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/13/1991
Collation 18p
Hypothesis-testing for differences in growth responses among physiographic strata, thinning levels, and fertilizer dosage levels resulted in a set of empirical models for predicting volume increment response of even-aged coastal Douglas-fir to nitrogen fertilizer. Absolute and percent responses are estimated for stands both thinned and unthinned, as a function of dosage levels and physiographic provinces. Although not 'highly' significant, the physiographic factor was retained in the models for purposes of refinement.