EFFECT OF SEASONAL VARIABILITY OF GROUND WATER LEVEL ON SALINITY COMPOSITION OF THE SOIL | ||
| Euphrates Journal of Agriculture Science | ||
| Article 1, Volume 6, Issue 2, April 2014, Pages 319-337 | ||
| Abstract | ||
| : field experiment was conducted in a field in palm trees unit of Abu Sedira / general institution of palm trees / Ministry of Agriculture for study the effect of seasonal flocculation of ground water level on salt composition of the soil. Fifteen observation wells were drilled to take water samples and monitor the fluctuation of the ground water level. Samples were taken for the period from 9th of Jan 2012 to 1st May 2013 and for three periods as follows :{(September) 2012 - (January and May) 2013}. Additionally other samples were taken on the 1st of July 2013 to observe the changes in soil salinity and ground water. All the previously mentioned samples were taken from certain depth (0-10,10-30,30-60,60-90,90-120,120-150)cm. salinity, pH , chlorides , sulfates have been estimated for the soil and ground water , and calculate Cl/So4 Ratio and Salt Regime Index this in turn identifies the extent of soil salinization by ground water in the study area. Based on the results obtained from the research and under the conditions of this study ,conclusions are as follows: 1. High rates of soil salinity for the wells which is far from the main drainage compared to the wells near it, this could be referred to the dramatic impact of the depth of ground water in the process of salinization. 2. An increase in the salinity of the soil and ground water during the seasons of the study. 3. Lack the efficiency of the drainage system due to poor maintenance and reduce grow which effect water with drawing and rising water level which contribute to salinization. 4. Misuse of water resources through a small incision of the river and thus increase the water waste and large quantities nominated direction of ground water has led to an increase in ground water levels and thus its contribution to the salinization of soil. 5. The salt regime index (SRI) was less than one which indicated the contribution of ground water in soil salinization.this required special attention such an leaching interval to avoid salt accumulation. | ||
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