Assessment of Options for the Sustainable Use of Agricultural Drainage Water For Irrigation in Egypt by Simulation Modelling

Wahba, M. A. S.

doi:10.1002/ird.2029

Cited by 12 publications

(5 citation statements)

References 12 publications

(17 reference statements)

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“…Reclaiming saline soil and maintaining landscaping plants require massive freshwater resources and the viable water source needs to be considered in the context of freshwater resources competition between agricultural demand and markedly increasing other demands, such as domestic and industrial water uses in coastal regions. The use of unconventional water resources, including saline water, has been intensively studied for agricultural and landscaping purposes (Qadir & Oster, 2004; Shalhevet, 1994; Wahba, 2017). It has been shown the advantages of using drip irrigation under saline conditions with soil matric potential controlling in the root zone (Kang et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Leaching efficiency and plant growth response in an integrated use of saline water for coastal saline soil reclamation

Zhang

Kang

et al. 2021

Land Degrad Dev

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A field experiment was carried out to evaluate an integrated use of saline water for saline soil reclamation around Bohai Bay in China. A landscape shrub (Caryopteris × clandonensis 'Worcester Gold') was cultivated and irrigated with five water salinities (ECi): 0.8, 3.1, 4.7, 6.3, and 7.8 dS m−1. Drip irrigation was scheduled by evolving soil matric potential thresholds of −5, −10, −15, and −20 kPa in 4 years. A gravel‐sand layer as subsurface drainage was installed at 1.0 m depth. After 4 years, the extremely saline soil (ECe of 27.8 dS m−1) for 0–1.0 m depth was reclaimed to moderately saline soil (ECe of 4.1–7.2 dS m−1). The decreases in survival rate, growth, and shoot dry weight of the plants as increasing ECi were observed. To achieve a relative survival rate of >50%, the ECi thresholds for plants were 7.8, 6.9, 5.5, and 5.3 dS m−1 for the 4 years, respectively. The quantificationally estimating root zone drainage and salt leaching efficiency indicated that more efficient salt leaching offered by ECi up to 3.1 dS m−1 in comparison with freshwater with ECi of 0.8 dS m−1 and less efficiency occurred at ECi > 6.3 dS m−1. The plants strongly responded to the different soil water and salinity regime in the dynamic leaching process, as thus it is recommended to use an inter‐seasonal evolving matric potential threshold of −10 kPa for dry season of the third year, −15 kPa for rainy season and following dry season for providing optimized soil water and salinity condition.

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Section: Introductionmentioning

confidence: 99%

Leaching efficiency and plant growth response in an integrated use of saline water for coastal saline soil reclamation

Zhang

Kang

et al. 2021

Land Degrad Dev

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“…The study simulated the fluctuations in groundwater level fairly precisely but did not simulate drainage outflow as precisely. Later, a different version of the DRAINMOD model was used by Wahba (2017) to simulate various alternatives for the application of drainage effluent for irrigation in north‐west Egypt.…”

Section: Introductionmentioning

confidence: 99%

Salinization and drainage problems of agricultural land

Singh

2020

Irrigation and Drainage

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The extension of irrigated agriculture is essential to fulfilling the mounting demand for food and fibre from a growing population which is anticipated to reach about 10 billion individuals in 2050. Lacking the necessary drainage, this extension can bring about salinization issues in irrigated regions. Continuous irrigation over many years with no adequate drainage services has led to huge agricultural regions becoming unproductive. Salinization problems linked to poor drainage are widespread in agricultural zones over the world. The aforementioned drainage-related salinization issues in agricultural land have been solved by using various methods and techniques. This paper presents an assessment of some non-conventional methods and strategies utilized for dealing with salinization and drainage issues of irrigated land. An indication of the drainage and salinization issues of irrigated areas and the significance of the study are given. Reasoning and foundation of the issues are presented. Numerical and analytical solutions of the problems are described. The drainage water management technique for managing nutrient losses from a drainage system is discussed. The analysis revealed that conjunctive water use with an increased groundwater proportion can to some extent manage the salinization and root-zone submergence problems of irrigated areas. K E Y W O R D S agricultural sustainability, conjunctive water use, drainage of irrigated land, drainage water management, land salinization Résumé L'extension de l'agriculture irriguée est essentielle pour répondre aux demandes croissantes de nourriture et de fibres pour la population croissante qui devrait contacter une dizaine de milliards d'individus en 2050. Sans des conditions de drainage adaptées, cette extension peut entraîner des problèmes de salinisation dans les régions irriguées. L'irrigation continue pendant de nombreuses années sans services de drainage adéquats a provoqué l'impossibilité à produire pour de vastes régions agricoles. Les problèmes de salinisation liés au mauvais drainage sont répandus dans les zones agricoles du monde entier. Les problèmes de salinisation des terres agricoles liés au * Problèmes de salinisation et de drainage des terres agricoles

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“…In this context, different management strategies must be developed for an appropriate sustainable use of these resources (soil, water and crop) under the existing challenges. The study of Wahba () showed that the cycle between fresh and drainage water can be done successfully if fresh water is available in the early crop establishment stages. The cycling between fresh and drainage water interseasonally also appears to be feasible and all these strategies must be tested in pilots before large application.…”

Section: Resultsmentioning

confidence: 99%

Assessment of the Groundwater Salinity Used for Irrigation and Risks of Soil Degradation in Souss‐Massa, Morocco

Oumlouki

Moussadek²,

Douaik³

et al. 2018

Irrigation and Drainage

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In the Issen irrigated perimeter of the Souss‐Massa Plain, Morocco, under a semi‐arid climate, the use of irrigation is inevitable for most crops. Therefore, groundwater is increasingly being used. Hydrochemical and statistical studies were conducted; they were carried out on the major and secondary elements of water (EC, Ca2+, pH, Mg2+, Na+, K+, Cl‐, SO42‐, HCO3‐, CO32‐, SAR and turbidity). The sampling period lasted over 2 years (2013 and 2014) spread over 3 seasons. The 36 wells that were analysed were spread across the studied plain. The values recorded during the sampling period showed that 11% of the analysed wells are highly saline in which EC > 3 dS m−1. Chemical analysis revealed a wide variety of chemical composition; samples are divided between two facies: sulphated magnesium calcium bicarbonate and sodium chloride. Then, statistical analyses of the studied parameters showed great variability and the results of analysis allowed maps of salinity and the SAR risk of irrigation water to be drawn. Copyright © 2018 John Wiley & Sons, Ltd.

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Assessment of Options for the Sustainable Use of Agricultural Drainage Water For Irrigation in Egypt by Simulation Modelling

Cited by 12 publications

References 12 publications

Leaching efficiency and plant growth response in an integrated use of saline water for coastal saline soil reclamation

Leaching efficiency and plant growth response in an integrated use of saline water for coastal saline soil reclamation

Salinization and drainage problems of agricultural land

Assessment of the Groundwater Salinity Used for Irrigation and Risks of Soil Degradation in Souss‐Massa, Morocco

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