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This article in SSSAJ

  1. Vol. 51 No. 1, p. 213-219
    Received: Jan 10, 1986

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Relation Between Soil Properties and Effectiveness of Low-cost Water-harvesting Treatments1

  1. W. E. Emmerich,
  2. G. W. Frasier and
  3. D. H. Fink2



Knowledge of the relationship between soil properties and treatment performance is important to obtain maximum benefit from low-cost water-harvesting treatments. Six low-cost water-harvesting treatments were field tested on small plots by determining runoff percentages and threshold values at eight sites for 164 weeks. Effectiveness of all treatments decreased over time, with the order of effectiveness being: waxes > silicones ≥ control (smoothed soil). Regression equations were developed to predict runoff percentages and threshold values based on soil properties. These equations can be used in determining which water-harvesting treatment would be most appropriate for a specific soil. All soil properties evaluated influenced the effectiveness of the water-harvesting treatments. Therefore, relationships between specific soil properties and the effectiveness of the treatments could not be established. A set of important soil properties were identified for each treatment in the regression equations, but more research is needed to determine the absolute importance of the individual soil properties in the effectiveness of the treatments.

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