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This article in SSSAJ

  1. Vol. 22 No. 2, p. 178-180
    Received: Oct 14, 1957
    Accepted: Jan 9, 1958

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The Influence of Speed and Drawbar Load on the Compacting Effect of Wheeled Tractors1

  1. James A. Vomocil,
  2. E. Rex Fountaine and
  3. Robert J. Reginato2



Field experiments were conducted on a Yolo fine sandy loam to measure the effect of speed and drawbar load on the compaction caused by the rear wheels of a tractor. Speeds ranging from 1 to 12 miles per hour were compared. Drawbar loading was varied from 0 to 2,000 pounds. Because of its high sensitivity and local importance, infiltration rate was used as the main index of compaction.

Increase in drawbar load and reduction of speed both increased the degree of compaction at each of three moisture contents but the effects were small compared to the changes caused by alterations in the soil moisture content.

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