Optimizing Soil Moisture Conservation by Mulch of Hydrophobic Aggregates Using Simulation and Numerical Search Procedures*

H. Talpaz and D. I. Hillel

Journal of Agricultural and Applied Economics, 1976, vol. 8, issue 1, 199-204

Abstract: Reducing soil water losses due to evaporation, runoff or weeds, is a primary concern in the management of agriculture in arid and semiarid regions. A method has recently been proposed to promote infiltration and retard evaporation and weed infestation by waterproofing surface-zone clods with chemical agents to form a mulch of loose, dry clods. The effect of this treatment is to stabilize the clods against breakdown and consequent water and wind erosion. Rain or irrigation water can trickle off individual clods and flow downward through open spaces between them, thus penetrating directly into the deeper soil layers. In this way, the intake of water is enhanced and the hazard of runoff (entailing erosion) is reduced.

Date: 1976
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