An overview of impact of subsurface drainage project studies on salinity management in developing countries

Tiwari, Preeti; Goel, Arun

doi:10.1007/s13201-015-0329-4

Cited by 30 publications

(13 citation statements)

References 26 publications

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“…Although near-spaced (≈50 m) laterals are recommended for heavy-textured soils (e.g. clay), especially when the drainage rate is high, their cost is considerably high compared to light-textured soils, where the spacing between laterals is between 100 and 150 m (Tiwari & Goel, 2017). This also agreed with the finding of Bundela et al (2016), where the cost of the subsurface drainage system in heavy-textured soil was almost one and a half times that of the system in light-and medium-textured soils.…”

Section: Resultsmentioning

confidence: 99%

Design of subsurface drainage network with minimum overall cost using Lagrange multiplier optimization

Gabr,

Fattouh,

Eltarabily

2023

Irrigation and Drainage

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Subsurface drainage is effective for not only controlling groundwater levels in agricultural lands but also alleviating soil salinity localized at the root zone, especially for arid and semi‐arid agro‐ecosystems. In this research, an optimization model that minimizes the overall costs of subsurface drainage systems subjected to design constraints was formulated. The Lagrange multiplier method for optimization was utilized to derive a general differential equation for obtaining the most economical design of the subsurface drainage system. Design charts for the minimum cost of the subsurface drainage network ($ ha−1) for lateral diameters (dL) of 2.5, 5, 7.5, 10 and 12.5 cm; hydraulic conductivities (K) of 0.5, 1, 2, 3 and 4 m day−1; different lateral lengths (LL) of 100, 150, 200, 250, and 300 m; a constant collector length (LC) of 1000 m (assuming laterals join the collector from both sides); drainage recharge (q) values of 1, 2, 3, 4 and 5 mm day−1; and excavation depths of 1.5 and 2.0 m were developed. The minimum computed subsurface drainage network (SSDN) costs observed at a lateral length (LL) of 300 m were 205, 246, 288, 331 and 374 ($ ha−1) for lateral diameters of 2.5, 5, 7.5, 10 and 12.5 cm, respectively, corresponding to lateral spacing of 175, 176, 177, 178 and 179 m. The suggested charts for the optimum design of a subsurface drainage system have lower overall costs than using conventional design approaches for pipelines and tube wells. The results will support solutions for designers to implement subsurface drainage systems with less and more affordable expenses in the old lands of the Nile delta of Egypt and other regions with similar agrosystems. Quality control during construction is very necessary for guaranteeing the effective and sustainable performance of subsurface drainage systems for many years.

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Section: Resultsmentioning

confidence: 99%

Design of subsurface drainage network with minimum overall cost using Lagrange multiplier optimization

Gabr,

Fattouh,

Eltarabily

2023

Irrigation and Drainage

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“…The facility improvement type included soils that require the construction of agricultural infrastructure and drainage projects. This includes farm ditches, lateral drainage ditches, and drainage culverts to prevent the land from water logging after rain and irrigation (Tiwari & Goel, 2017). Although some soil limiting factors exist for the fields in the temporary non‐consolidation type area, the soil safety is high, the terrain is flat, and the soil is relatively fertile.…”

Section: Discussionmentioning

confidence: 99%

Classification of agricultural land consolidation types based on soil security to improve limiting factors adapted to local soil conditions

et al. 2023

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Agricultural land consolidation (ALC) is an effective tool to ensure national food security. The current ALC is a government‐led systematic behavior with regional characteristics, most ALC types are classified according to difficulty without considering the safety of soil systems, resulting in randomness in the site selection of projects. Given the soil complexity, ensuring soil security (SS) is a prerequisite for efficiently completing ALC. ALC that gives full play to the soil's functional advantages is an effective means of securing SS. The main goal of this study is to establish a new set of technical processes for classifying the types of ALC from the perspective of SS, including the agricultural SS evaluation system and the identification method of land‐improvable limiting factors. We used a generalized mean model to evaluate and analyze SS in multiple dimensions and identified 11 combinations of limiting factors in Wen County through the k‐means clustering method. The combination of the limiting factor clustering area with the SS spatial distribution patterns guided five ALC types. When compared using the spatial pattern comparison method, the new ALC guideline avoids the singularity of ALC types, selects the field patch as the evaluation and decision‐making unit, and improves the accuracy of land management measures. The results indicate that incorporating SS into ALC policy planning and decision‐making can provide complex and multifaceted knowledge of factors affecting SS, and potential solutions to make agricultural soils safer, enabling higher quality and sustainability of agricultural land use.

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“…Of these measures, open ditch and subsurface drainage are the most commonly used. Compared with open ditch drainage, subsurface drainage cannot only effectively control groundwater level, discharge excess soil moisture and improve the effect of soil leaching desalination, but it also has the advantages of less land occupation, low maintenance cost and convenient mechanized construction; accordingly, subsurface drainage has been widely used in arid and semi‐arid areas (Ritzema, 1994; Tiwari & Goel, 2017; Valipour, 2014). For example, Xinjiang in China, which is a typical arid region, began introducing Dutch technology in the installation of subsurface drainage pipes in farmlands in 1985, improving saline‐alkali land by irrigation and leaching.…”

Section: Introductionmentioning

confidence: 99%

Field study on the influence of subsurface drainage pipes and envelopes on discharge and salt leaching in arid areas

Yang

et al. 2022

Irrigation and Drainage

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The selection of suitable drainage materials is crucial for the efficient operation of subsurface drainage systems. Previous studies on drainage material selection have focused on anti‐clogging characteristics, and less attention has been given to their effects on the process of soil salt leaching, which is an important consideration in arid and semi‐arid areas. To investigate the influence of subsurface drainage pipes and envelopes on salt leaching and discharge, field leaching experiments under flood irrigation and drip irrigation were conducted in Xinjiang region in China. Results show that the amount of drainage water in treatments that use gravel envelopes is higher than that in treatments that use synthetic envelopes. Meanwhile, the amount of drainage water in treatments that use gravel envelopes decreases the most after 1 year of operation. The synthetic envelope, the interaction between the perforation rate of the drainage pipe and the synthetic envelope significantly influence water and salt discharge. The optimal level of the synthetic envelope used in this study is spun‐bonded non‐woven geotextile, that of the layer number of envelopes is a single layer, and that of the perforation rate of the drainage pipe is 3.0%.

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An overview of impact of subsurface drainage project studies on salinity management in developing countries

Cited by 30 publications

References 26 publications

Design of subsurface drainage network with minimum overall cost using Lagrange multiplier optimization

Design of subsurface drainage network with minimum overall cost using Lagrange multiplier optimization

Classification of agricultural land consolidation types based on soil security to improve limiting factors adapted to local soil conditions

Field study on the influence of subsurface drainage pipes and envelopes on discharge and salt leaching in arid areas

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