Irrigation development is a gateway to increased agricultural, water and land productivity, increased\r\nhousehold and national food security. However, irrigation development has been a major challenge in\r\nmany developing countries, including Egypt. The overall objective of this study is to detect the\r\ninfluence of different irrigation systems on water-use efficiency, crop and soil salinity in highly soil\r\nsalinity. Two techniques were applied in experiment, the first technique was siphon irrigation, and the\r\nsecond one was gated pipe. The monitored parameters were water table depth, water and soil salinity\r\nand crop yield. The study revealed that the intensive management is a very important aspect for the\r\nsuccess of siphon technique and cotton crop yield was higher by 17% compared to gated pipe\r\nirrigation treatment. The total soil salinity increased in both treatments. The siphon method increases\r\nthe average salinity by 2.7% while the gated pipe increased it by 12.9%; converging the value of the\r\ncrop coefficient in all relations used in most stages of growth, except Penman relationship which gave\r\nthe highest values.
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