Yarding-method and slash-treatment effects on compaction, humus, and variation in plantation soils.

Don Minore; Howard G. Weatherly

doi:10.2737/PNW-RN-476

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Yarding-method and slash-treatment effects on compaction, humus, and variation in plantation soils.

Informally Refereed

Authors:

Don Minore, Howard G. Weatherly

Year:

1988

Type:

Research Note

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RN-476

Source:

Res. Note PNW-RN-476. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p

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Abstract

Soil 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.

Keywords

Yarding method, slash treatment, soil compaction, organic matter, disturbance

Citation

Minore, 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