Record Display for the EPA National Library Catalog

RECORD NUMBER: 8 OF 8

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)

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
NTIS	PB91-146498	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

18p

Abstract

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.