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The effect of deficit irrigation with treated wastewater on sweet corn: experimental and modelling study using SALTMED model

Hirich, Abdelaziz; Ragab, Ragab; Choukr-Allah, Redouane; Rami, Abellatif. 2014 The effect of deficit irrigation with treated wastewater on sweet corn: experimental and modelling study using SALTMED model. Irrigation Science, 32 (3). 205-219. 10.1007/s00271-013-0422-0

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Abstract/Summary

This study investigated the impact of using treated wastewater and deficit irrigation on yield, water productivity, dry matter and soil moisture availability. The experiment included six treatments of deficit irrigation with treated wastewater during the 2010 and 2011 seasons and two deficit irrigation treatments combined with 3 organic amendment levels during the 2012 season. The experimental and SALTMED modelling results indicated that regulated deficit irrigation when applied during vegetative growth stage could stimulate root development, increase water and nutrient uptake and subsequently increase the yield. The organic amendment has slightly improved yield under full irrigation but had relatively small effect under stress conditions. The SALTMED model results supported and matched the experimental results and showed similar differences among the different treatments. The model proved its ability to predict soil moisture availability, yield, water productivity and total dry matter for three growing seasons under several deficit irrigation strategies using treated wastewater. The high values of the coefficient of determination R 2 reflected a very good agreement between the model and observed values. The SALTMED model results generally confirm the model’s ability to predict sweet corn growth and productivity under deficit irrigation strategies in the semi-arid region.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1007/s00271-013-0422-0
Programmes: CEH Topics & Objectives 2009 - 2012 > Water > WA Topic 3 - Science for Water Management > WA - 3.4 - Develop novel and improved methods to enable the sustainable management of freshwaters and wetlands
CEH Sections: Boorman (to September 2014)
ISSN: 0342-7188
Additional Keywords: SALTMED model, deficit irrigation, treated waste water
NORA Subject Terms: Agriculture and Soil Science
Date made live: 27 Mar 2014 10:20 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/506203

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