Advance of wetting pattern during redistribution phase under trickle source

AbstractThe soil wetting pattern under a trickle source is developed from water movement in wetting phase and redistribution phase. The present study included developing equations for vertical advance and horizontal advance of the wetting front during the redistribution phase. The advance is a function of time from the beginning of water application, total application time, water application rate, and saturated hydraulic conductivity. The same of equations can be used during the wetting phase too. The data of water movement in the soil under trickle source were obtained from previously developed researches. Key words : trickle source, wetting pattern, wetting phase, redistribution phase.