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Creator:: Zumrawi, Abdel Azim M. A., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: This paper presents equations developed to predict the height to live crown base of six species in the central western Willamette Valley of Oregon. Weighted nonlinear regression was used to fit a separate logistic equation for each species. The predictor variables are total tree height, crown competition factor in trees...
Resource Type:: Research Paper
Full Text:: Research Paper 52 March 1989 Unbound issue Does not

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations are presented for predicting height to crown base (or bole ratio) for fourteen species of trees common to the mixed-conifer zone of southwest Oregon. Nonlinear regression was used to fit a weighted logistic function for each species. The independent variables include height, crown competition factor in larger trees, stand...
Resource Type:: Research Paper
Full Text:: Research Paper 50 March 1987 SD X54 Unbound issue 1

Creator:: Larsen, David R., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting total height as a function of diameter at breast height are presented for 17 tree species from southwest Oregon. Because basal area and site index often influence tree height, additional equations are presented which may include either or both of these as independent variables. Equation coefficients were...
Resource Type:: Technical Report
Full Text:: Research Paper 49 January 1987 SD a5q -07173 Unbound

Creator:: Miller, Donald James and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: industry, the scientific com- munity, and the general public. As a research paper, this publication is one

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Research Paper 47 SD The Forest Research Laboratory of Oregon State University was established by the

Creator:: Paine, David P., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Research Paper
Full Text:: RESEARCH PAPER 46 OCTOBER 9982 5D Q--54F O I Il

Creator:: Lavender, Denis P. and Oregon State University. Forest Research Laboratory
Abstract:: Perennial woody plants have a complex annual cycle keyed to the environment. Temperate plants have an annual dormant period commonly broken by exposure to low temperatures, although daily photoperiods of 16 hours or longer may partially substitute for the chilling. Shoot growth in the spring is normally stimulated by rising...
Resource Type:: Technical Report
Full Text:: and Industry, and to the general public. As a RESEARCH PAPER, this publication Is one of series that

Creator:: Stine, R., Gordon, J. C., Ching, Kim K., and Oregon State University. Forest Research Laboratory
Abstract:: Black cottonwood (Populus trichocarpa Torr. & Gray) cuttings were collected from five Oregon provenances along a north-south gradient. Cuttings from each provenance were grown for 1 year at two locations, one on the Willamette Valley floor and the other on the Valley margin. Survival at both locations was poor. Stem...
Resource Type:: Technical Report
Full Text:: . As a RESEARCH PAPER, this publication is one of series that describes a completed study or experiment

Creator:: Hobbs, Stephen D., Oregon State University. Forest Research Laboratory, Byars, R. H ., Henneman, D. C., and Frost, C. R.
Abstract:: The effects of artificial shading and aspect on the performance of 1-0 container-grown Douglas-fir seedlings were evaluated 1 year after outplanting on four different aspects in southwest Oregon. The test areas, all characterized by steep slopes and shallow, skeletal soils with a surface mantle of loose rock and logging slash,...
Resource Type:: Technical Report
Full Text:: RESEARCH PAPER 42 DECEMBER 1980 SD ,?5L{ 07173 Unbound

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