Spatial Distribution of Drainage Water Resource Quality Parameters at Northern Dakahlia Governorate | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 5, Volume 8, Issue 10, October 2017, Pages 515-520 PDF (1.25 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2017.38087 | ||
| Authors | ||
| S. Hammad; A. El-Ghamry; A. Mosa; A. Khamlaj | ||
| Soils Department, Faculty of Agriculture, Mansoura University, 35516 Mansoura, Egypt | ||
| Abstract | ||
| In regions with water scarcity, especially in arid and semi-arid countries, there is an urgent need for reusing low-quality water resources (e.g. agricultural drainage water) for agricultural purposes. However, preparatory restricted procedures (e.g. quality assessment) should be undertaken to avoid the hazardous effect of using these low-quality water resources on arable soils. For this purpose, 20 geo-referenced agricultural drainage water samples were collected by the aid of Global Positioning System (GPS) from Belkas District, Dakahlia Governorate to assess water quality for agricultural purposes. Results indicated that most of the investigated water resources lie between slight to moderate restriction in use based on their salinity value (0.7-3.0 dSm-1). The highest concentrations of total soluble salts were recorded in the northern sites (6-7 dS m-1), and the lowest concentrations (1-2 dS m-1) were recorded in areas located at southern sites. Potential salinity values were relatively high with ranging values between 8-24 meq L-1 in most of investigated sites. Sodicity hazard was relatively low, and most of investigated water resources were classified as class 1, except those at northern parts, which were classified as class 2. This result was further confirmed by the results of RSC index, which showed low potentiality for sodium carbonate formation due to the high concentrations Ca2+ and Mg2+ ions in water. Boron concentration in most water resources were relatively low with some restrictions for sensitive plants irrigation, especially with samples located at northern sites. Cadmium concentrations in all investigated sites was very low (<0.003 mg L-1) suggesting low heavy metals contamination threats. In conclusion, these water resources showed a good suitability for reusing in irrigation under restricted monitoring procedures. | ||
| Keywords | ||
| spatial distribution; Quality; Drainage water; Irrigation | ||
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