Long-term Impact of Treated Sewage Water on Some Soil Properties and Nutrients Status in Luxor Governorate, Egypt | ||||
| Egyptian Journal of Soil Science | ||||
| Article 1, Volume 57, Issue 1, March 2017, Page 1-14 PDF (493.9 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejss.2017.3358 | ||||
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| Abstract | ||||
| IRRIGATION of forests with sewage water for fuel and timber production in Egypt is an approach which helps to overcome health hazards associated with sewage farming. Hopefully, sewage water will help in the expansion of the irrigated agriculture or save the fresh water for other sectors. This study was carried out to investigate the impact of irrigation with treated sewage water on the properties and nutrients status of soils in Luxor Governorate. samples of sewage water, ground water and Nile water as well as samples of soil irrigated with these water sources were collected and analyzed. The results showed that sewage water and groundwater are considered moderately saline with an ECw of 0.88 and 1.20 dS/m, respectively, while the Nile water is slightly saline (ECw 0.27 dS/m). With respect of their SAR, RSC and Cl values, all investigated water sources are of a high quality and can be used in the irrigation without limitations. Moreover, sewage water contained higher amount of organic matter, N, P and K compared to groundwater and Nile water. On the other hand, most of the soils that were irrigated with sewage water were of low levels of salinity (ECe < 4dS/m) and sodocity (SARe <13), indicating no threat to soil quality. Use of sewage water in irrigation also improved the chemical properties and fertility status of the soils. It increased OM, N, K and P levels in the soils while pH and CaCO3 values decreased. The irrigation system showed effects of treated sewage water on the soil properties. The soils irrigated with sewage water under the surface irrigation system had higher values of OM, ECe, total nitrogen and available phosphorus but lower SARe and available K levels than those under the drip irrigation systems. Moreover, prolonged irrigated (15 years) with sewage water had a higher values of saturation percentage, organic matter, total nitrogen, available phosphorus, and available K but the lower ones of pH, SARe and calcium carbonate than those under the short term (4 years) use of sewage water. | ||||
| Keywords | ||||
| Keywords: Long-term, Sewage water irrigation, Chemical soil properties, Drip irrigation; surface irrigation | ||||
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