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Abstract

 

This article in AJ

  1. Vol. 60 No. 2, p. 206-209
     
    Received: Sept 1, 1967


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doi:10.2134/agronj1968.00021962006000020019x

Effect of Cropping Intensity on Erosion and Infiltration1

  1. J. V. Mannering,
  2. L. D. Meyer and
  3. C. B. Johnson2

Abstract

Abstract

Soil loss and infiltration from corn (Zea mays L.), for rotations ranging in intensity from corn after 3 years of meadow to continuous corn, were measured on a silt loam soil of 5% slope. Intense simulated rainstorms were applied at three crop stages during each of 2 successive years. Infiltration rates for first- and second-year corn after grass-legume meadow were 32 and 26% greater, respectively, titan for continuous corn. The rate for third- and fourth-year corn was similar to that of continuous corn. Soil losses from first-, second-, third-, and fourth-year corn after meadow were 53, 83, 90, and 97%, respectively, of that from continuous corn. Two or 3 years of meadow were more effective than 1 year of meadow in maintaining high infiltration rates and reducing soil loss on first-year corn. Infiltration was 17% and 18% greater and soil losses were 40% and 32% less for corn ulster 2 and 3 years of meadow, respectively, than after 1 year of meadow. Residual influences of meadow-based rotations on water-stable aggregation statistically accounted for greater than 70% of the variance in soil loss.

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