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This article in SSSAJ

  1. Vol. 51 No. 4, p. 1078-1080
     
    Received: Feb 25, 1986


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doi:10.2136/sssaj1987.03615995005100040046x

Inexpensive Equipment for Evaluation of Tillage Power Requirements1

  1. A. J. Jones,
  2. S. Bruce,
  3. J. L. Krall and
  4. A. H. Ferguson2

Abstract

Abstract

Portable inexpensive equipment is described for measurement of tillage power requirements. Equipment consisted of (i) a modified chisel plow; (ii) a four-wheel drive pickup; (iii) a hydraulic system including pressure transducer; and (iv) a voltage integrator-timing device. A calibration curve related the voltage output from the pressure transducer to force required to pull the chisel plow. Coefficients of variation among test fields ranged from 4.3 to 5.9% for voltage output, 3.7 to 5.0% for velocity, and 7.2 to 11.0% for calculated tillage power requirements. Construction cost was approximately $1000 plus labor. The chisel plow was transported in the pickup or on a small trailer.

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