Graduate Thesis Or Dissertation

 

Pre-harvest measures to reduce the weight of second-growth Douglas-fir Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/6d56zz531

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  • The primary objective of this study is to explore the possibilities of two methods to reduce the weight of small commercial timber prior to logging. The two methods studied are injection of cacodylic acid and sour-felling. Treatments were applied in November, 1965 and May, 1966, with final harvest of the stand occurring in September and October, 1966. The weight reduction, as indicated by the moisture content, was compared to untreated trees. Results are based on wood samples taken from all trees and a weighed truckload of logs from each treatment. The data indicate small differences among the same treatments due to seasonal application. Reductions in weight range from ten to 20 percent when compared to the untreated trees. Some indication of economic potentials is presented. Sour-felled trees were readily attacked by insects but chemical treatments suffered negligible attack. Felling and woods operations were not adversely influenced. Backflash, while present to aiimited degree, may be a result of application method and could be reduced by other means of treating.
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