SOIL MANAGEMENT AND IMPROVEMENT OF SALT AFFECTED SOILS | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 7, Volume 4, Issue 9, September 2013, Page 907-919 PDF (632.64 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2013.52151 | ||||
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| Authors | ||||
| F. A. Farag; M. A. E. El Shazely; A. H. Abd Elrahman; M. S. Awaad | ||||
| Soils, Water and Environment Res. Inst., Agric. Res. Center, Giza, Egypt | ||||
| Abstract | ||||
| A field experiment was conducted in clay saline –sodic soils, located in the north east of Egypt, Sahl El-Hossinia Research station, Agriculture Research Center, El-Sharkia Governorate, Egypt, during summer season 2011 and winter season2011/ 2012 to evaluate the effect of some soil management practices i.e., mole drain filled back with sand at two diameter 7.5 cm and 10 cm under three distances 4, 6 and 8 m individually or combined with some soil amendments application;) gypsum, sand and aluminum sulfate( on improving some physical and chemical soil properties. Also, use of the continuous leaching processes for salt removal after each rotation of leachate 25, 75, 125 and 275 days. The soil samples were taken to determine EC, pH and ESP as well as at the end of experiment. Also, the hydraulic conductivity, bulk density and total porosity were determined. The results indicated that the construction of mole drain filled back with sand individually after four rotations of leachate processes led to significant decrease in the values of EC, pH and ESP compared with the initial values. These decreases were more effective with application of soil amendments i.e. (gypsum, sand and aluminum sulfate) combined with the mole drain compared with the empty mole drain . It was observed that at the end of the experiment after four rotations leachate processes, the mole drain at different spacing which filled back with sand combined with soil amendments application significantly decrease the values of bulk density and increase the values of hydraulic conductivity and total porosity compared with the initial values. The superiority in improving physical properties (hydraulic conductivity, bulk density and porosity of the studied soil was recorded with mole drain filled back with sand combined with the soil amendment as aluminum sulfate or gypsum compared with sand after fourth rotations of leachate. | ||||
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