Effect Of Soil Surface Slope On The Performance Of Trickle Line Source:(A) Wetted Pattern
AL-Rafdain Engineering Journal (AREJ),
Volume 22, Issue 5, Pages 1-13
The soil wetting pattern under the trickle source be affected by several factors, and these factors are the soil surface slope, water application rate, soil type, and the initial soil moisture content. The aim of the study is to find out the einterferences effects of the above factors on displacement of surface wetting pattern center from the trickler. The study included 16 test to monitor the advance of the wetting front with time in the soil profile under trickle line source. This was done by using sandy loam soil and clay loam soil, several soil surface slopes are applied (0%, 3.75%,7.5%, 15%) two water application rates (3.03,5.06) ml/min/cm and two levels of the initial soil moisture contentand for the two type of soil. The results showed that the displacement of surface wetting pattern center from the trickler increases with the increase of soil surface slope, and this increase is more clear with the increasing of the soil softness. Also it showed that the displacement of surface wetting pattern center from the trickler increases with the increase of water application rate at the same applied water volume. And also showed there is no significant effect of initial soil moisture on the displacement of surface wetting pattern center from the trickler for two study soils.
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