Soil salinity processes under drainwater reuse in the Nile Delta, Egypt

Abstract

The report presents the results from a micro-study, which monitored salt and water movement in a typical farmer's field on the Nubariya Scheme in the Western Nile Delta, which had been reusing saline drainwater for irrigation for over ten years. The main fieldwork from the project provided quantitative evidence that the reuse of agricultural drainage water (both directly and after blending with fresh Nile water) has led to increased salinity levels in the fields of the Nile Delta.

The report presents the results of analysis of salt leaching and diffusion processes occurring within the study area over a one-year period. It demonstrates how very saline drainwater can be successfully used for agricultural production provided appropriate management methods are adopted.

The report contains a useful summary of the methods available for predicting salinity accumulation:

  • Rhoades and Merril Relation
  • Ayers and Westcot Relation
  • Rhoades Relation
  • Hoffman and Van Genuchten Equation
  • Computer models

The results of testing these different predictive procedures against the field observations are presented.

Citation

HR Wallingford, UK. 94 pp.

Soil salinity processes under drainwater reuse in the Nile Delta, Egypt

Help us improve GOV.UK

Don’t include personal or financial information like your National Insurance number or credit card details.