REUSE OF DRAINAGE WATER ON FARM: 2-MANAGING MODERATELY SALINE IRRIGATION WATER | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 5, Volume 72, Issue 1, March 1994, Page 45-58 PDF (3.53 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.1994.444797 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| ATTA F. EL-WAKEEL; NABIL M. EL-MOHWELHI | ||||
| Soil and Water Research Institute, Agricultural Research Center, Giza, Egypt | ||||
| Abstract | ||||
| This is the second paper dealing with the reuse of drainage water for irrigation. The area under consideration is located in the northern part of the Delta at El-Hamoul, Kafr EI-Sheikh Governorate, where different water quality have been used for irrigation since decades. The current trails have been designated to find ways to live with poor quality water under the conditions of such soils. In the year of 1987, two pilot areas were provided with gypsum; surface drainage and deep ploughing at alternative depths and spacings using some modern plough types. Rice and berseem were grown before amelioration and through three successive years after. Results indicate that, irrespective of the plough type or the quality of the leaching water used, the saline sodic soils were chemically reclaimed and their productivity increased several folds within 2 to 3 years after amelioration practices by ploughing at 50, 60 or 100 cm depth and 50-100 cm spacings associated with surface drainage (120 cm depth and 40 m spacing) and gypsum applications. The soil properties and its productivity were improved, with less rate, under deep ploughing at 40 cm depth and 50-100 cm spacings in combination with drainage and gypsum. Drainage with gypsum addition was of little benefit, however, gypsum alone was not useful, even after three years of leaching. Thus, it can be concluded that under good water management, the considerable amounts of drainage waters discharged into the sea have potential values of irrigation and reclamation of salt affected soils. It is, also, necessary that the chemical and biological pollutants of these water sources would be within the safe limits. | ||||
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