Long-Term Effect of Treating True Fir Stumps with Sodium Tetraborate to Control Losses from Heterobasidion annosum
Stump treatment with sodium tetraborate (borax) to control infection by Heterobasidion annosum and to reduce losses was tested in 10 true fir stands in California. These stands were thinned in 1978, 1979, or 1980, and borax was applied to stumps on 0.5 ha plots. Adjacent 0.5 ha plots were left untreated. Borax reduced stump surface infection but did not affect tree mortality between paired treated and untreated plots. The incidence of H. annosum increased for borax-treated stumps whose protected surfaces were removed 1 year earlier. The number of firs that died over the period of the study was positively correlated with the average age of the trees. Differences in mortality were not significant between treated and untreated plots West. J. Appl. For. 7(1):29-31
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Document Type: Journal Article
Affiliations: Department of Plant Pathology, University of California, Berkeley, CA 94720
Publication date: 1992-01-01
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