The impact of irrigation method on soil salinity distribution
Paper Details
The impact of irrigation method on soil salinity distribution
Abstract
Salinity is a major problem affecting crop production over the world. Modifying water management through appropriate irrigation practices can often lead to increase crop yields under saline soil conditions especially in arid and semi-arid regions.. The objective of this study was to compare three irrigation methods of flood irrigation and furrow irrigation with two different furrow width on soil salinity distribution and water consumption. Experiments were carried out in a field located at east of Urmia salt water lake with a loamy soil texture and soil salinity (EC) of 12 dSm-1.The irrigation methods included: conventional flood irrigation with no furrow; furrow irrigation with 60 cm furrow width; furrow irrigation with 100 cm furrow width. According to the results, reducing the width of the furrow from 100 to 60 cm resulted in better soil leaching from inside the furrows to the ridges so that soil salinity decreased by 37% compared to the initial value and also irrigation water consumption was 30% less than other methods. Therefore, in semi-arid areas with saline soils, planting within the narrow furrows and furrow irrigation is preferable.
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