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Yarding-method and slash-treatment effects on compaction, humus, and variation in plantation soils.Author(s): Don Minore; Howard G. Weatherly
Source: Res. Note PNW-RN-476. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p
Publication Series: Research Note (RN)
Station: Pacific Northwest Research Station
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DescriptionSoil penetration-resistance and soil-humus frequency were measured on 86 progeny-test plantations in southwestern Oregon to determine the effects of yarding method and slash treatment on soil compaction and humus, and a disturbance index was calculated for each plantation. Compaction and humus loss were more severe on tractor-yarded, machine-piled plantations than on cable-yarded, broadcast-burned plantations. Machine piling and burning of slash did not increase compaction or humus loss significantly more than broadcast burning on tractor-yarded plantations. Within-plantation variation in soil compaction was greater on tractor-yarded, broad-cast-burned plantations than on tractor-yarded plantations from where stumps were removed.
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CitationMinore, Don; Weatherly, Howard G. 1988. Yarding-method and slash-treatment effects on compaction, humus, and variation in plantation soils. Res. Note PNW-RN-476. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p
KeywordsYarding method, slash treatment, soil compaction, organic matter, disturbance
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