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Creator:: Streeby, Larry, Oregon State University. Extension Service, Washington State University. Cooperative Extension, and University of Idaho. Cooperative Extension Service
Abstract:: Published January 1978. A more recent revision exists. Please look for up-to-date information in the OSU Extension Catalog: https://catalog.extension.oregonstate.edu
Resource Type:: Technical Report
Full Text:: Prepared by Larry Streeby, Extensioh forest management

Creator:: Emmingham, William H. and Elwood, Norman E.
Abstract:: Explains how seedlings grow into mature trees and how stands of trees develop. Describes basic tree growth and growth processes (photosynthesis, respiration, and translocation-assimilation). Discusses how thinning affects individual tree growth and stand growth, including growth responses, thinning shock, tolerance levels of common Pacific Northwest tree species, crown classification systems,...
Resource Type:: Technical Report
Full Text:: growth .............................2 How thinning affects individual tree growth

Creator:: Kellogg, L. D. (Loren D.) and Oregon State University. Forest Research Laboratory
Abstract:: The Forest Engineering Department, Oregon State University, has evaluated several systems for thinning young timber stands on steep terrain. Stands averaged 35 to 40 years old and 25.4 to 35.6 cm (10-14 in.) dbh. Approximately 40 percent of the stems per hectare were removed in the thinning operations. This paper...
Resource Type:: Technical Report
Full Text:: ft3). Many forest managers consider thinning an important silvicultural treatment in imma- ture stands

Creator:: Oester, Paul T., Emmingham, William H., and Oregon State University. Extension Service
Abstract:: Precommercial thinning (PCT) is an important timber management practice in the Pacific Northwest. You should consider it as soon as a young stand has been established.
Resource Type:: Technical Report
Full Text:: thinning yield good dollar returns—often better than other forest management investments. For example

Creator:: Kellogg, L. D. (Loren D.), Olsen, Eldon D., and Oregon State University. Forest Research Laboratory
Abstract:: The production rates and costs of harvesting smallwood were determined for a small yarder (Koller K-300) operating under variable conditions: the size of the crew, the addition of a skidder to swing logs from the landing, and the type of harvest method-employed, either conventional or hot thinning (simultaneous felling and...
Resource Type:: Technical Report
Full Text:: PRODUCTIVITY OF A SMALL YARDER: CREW SIZE, SKIDDER SWINGING, HOT THINNING WREN D. KELLOGG ELDON D. OLSEN FORE

Creator:: Kellogg, L. D. (Loren D.), Olsen, Eldon D., Hargrave, Michael A., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: after precommercial thinning. Canadian Journal of Forest Research 10:389-394. FIEBER, W.F., T.A

Creator:: Kellogg, L. D. (Loren D.), Miller, Mark E., Olsen, Eldon D., and Oregon State University. Forest Research Laboratory
Abstract:: Production rates and costs for skyline harvesting were examined over a range of residual thinning intensities, operational methods, and sites. The sites included three stands of 40- to 50-yr-old Douglas-fir on the Willamette National Forest in the Cascade Mountains of Oregon. Three silvicultural treatments were studied at two sites, and...
Resource Type:: Technical Report
Full Text:: RC21 Forest Research Laboratory Oregon State

Creator:: Cornell, Jennie L., Kellogg, L. D. (Loren D.), and Oregon State University. Forest Research Laboratory
Abstract:: On-the-ground harvest unit layout, especially in skyline-thinning operations, is critical to meeting multiple resource objectives of the land manager and maintaining the economic viability of the timber harvesting operator. This phase of an operation can optimize the layout and harvesting of a sale or unit. Detailed layout by a knowledgeable...
Resource Type:: Technical Report
Full Text:: Thinning Systems. Research Contribution 45, Forest Research Laboratory, Oregon State Uni- versity

Creator:: Tappeiner, J. C. (John C.), Bell, John F., Brodie, J. Douglas (John Douglas), 1938-, and Oregon State University. Forest Research Laboratory
Abstract:: A 20-year-old Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stand in the Oregon Coast Range was thinned from about 1,700 to about 350 trees/ac. Subsequent thinnings, under eight different regimes, occurred at ages 23, 27, 30, and 32. Average net periodic cubic-volume growth was strongly influenced by thinning regime, varying from about...
Resource Type:: Technical Report
Full Text:: of forest stands to various thinning intensities is important for managing stands for wood products

Creator:: Parker, Robert T., Bennett, Max, 1963-, and Oregon State University. Extension Service
Abstract:: Thinning is one of the most powerful forest management tools available to landowners for achieving a wide range of goals and objectives. Thinning influences: • Trees’ growth rates and potential economic value • Which species of trees and other plants will be in the stand • Trees’ resistance to insects...
Resource Type:: Technical Report
Full Text:: M. Bennett why thin? Thinning is one of the most powerful forest management tools available to

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