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Description: The effect of tool speed on the forces and soil disturbance associated with subsoiling was investigated in a compact clay loam and a compact sandy loam under field conditions. Regression analyses revealed that tool speed had a highly significant linear effect on the vertical force, and had a highly significant quad ratic effect on the horizontal force, total force, moment and specific resistance. In all cases, however, the contribution of tool speed or tool speed squared was small. Soil type also had a highly significant effect on the forces, the moment and the specific resistance. No interactions between soil and tool speed or between soil and tool speed squared were observed. Neither soil nor tool speed had a significant effect on the soil areas heaved or disturbed, the total area, the width of distur bance or the swell factor. A three-dimensional soil wedge model of soil failure was found to have moderate agreement with the total and horizontal forces and poor agreement with the vertical force. The model did not accurately reflect the effect of speed on the total, horizontal and vertical forces in these soils.

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Citation: G.T. Owen 1989. SUBSOILING FORCES AND TOOL SPEED IN COMPACT SOILS. Canadian Agricultural Engineering 31(1):15-20.
Volume: 31
Issue: 1
Pages -
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Date: 1989
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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