Impact of mole drains on salinity of a vertisoil under irrigation

Castanheira, Paulo Jorge; Serralheiro, Ricardo

doi:10.1016/j.biosystemseng.2009.08.010

Cited by 15 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The amount of water needed to achieve the desired salt balance is referred to as the leaching requirement or the leaching fraction. However, excess irrigation also increases the leaching of nutrients and other agrochemicals applied to the soils [48], and thus often degrades the quality of the water bodies receiving them [49,50]. In addition, leaching reduces water and nutrient use efficiency because increases the amount of irrigation water applied and diminishes the availability of fertilizers in the root zone [51].…”

Section: Preventing or Halting Secondary Salinizationmentioning

confidence: 99%

A Review of Soil-Improving Cropping Systems for Soil Salinization

et al. 2019

View full text Add to dashboard Cite

A major challenge of the Sustainable Development Goals linked to Agriculture, Food Security, and Nutrition, under the current global crop production paradigm, is that increasing crop yields often have negative environmental impacts. It is therefore urgent to develop and adopt optimal soil-improving cropping systems (SICS) that can allow us to decouple these system parameters. Soil salinization is a major environmental hazard that limits agricultural potential and is closely linked to agricultural mismanagement and water resources overexploitation, especially in arid climates. Here we review literature seeking to ameliorate the negative effect of soil salinization on crop productivity and conduct a global meta-analysis of 128 paired soil quality and yield observations from 30 studies. In this regard, we compared the effectivity of different SICS that aim to cope with soil salinization across 11 countries, in order to reveal those that are the most promising. The analysis shows that besides case-specific optimization of irrigation and drainage management, combinations of soil amendments, conditioners, and residue management can contribute to significant reductions of soil salinity while significantly increasing crop yields. These results highlight that conservation agriculture can also achieve the higher yields required for upscaling and sustaining crop production.

show abstract

Section: Preventing or Halting Secondary Salinizationmentioning

confidence: 99%

A Review of Soil-Improving Cropping Systems for Soil Salinization

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Although costing less than tile drainage, they do require more maintenance (Tuohy et al, 2016, 2018; Dhakad et al, 2018). This drainage system is generally installed to manage rising groundwater levels and land salinization problems (Robinson et al, 1987; Castanheira and Serralheiro, 2010; Kolekar et al, 2014). Mole drainage relies on closely spaced channels and subsoil cracks to quickly send surplus soil water to the tile or agricultural (ag) pipe drainage system throughout the season (Childs, 1943; Hallard and Armstrong, 1992; Tuohy et al, 2015, 2016).…”

Section: Soil Managementmentioning

confidence: 99%

Soil and Crop Management Practices to Minimize the Impact of Waterlogging on Crop Productivity

et al. 2019

View full text Add to dashboard Cite

Waterlogging remains a significant constraint to cereal production across the globe in areas with high rainfall and/or poor drainage. Improving tolerance of plants to waterlogging is the most economical way of tackling the problem. However, under severe waterlogging combined agronomic, engineering and genetic solutions will be more effective. A wide range of agronomic and engineering solutions are currently being used by grain growers to reduce losses from waterlogging. In this scoping study, we reviewed the effects of waterlogging on plant growth, and advantages and disadvantages of various agronomic and engineering solutions which are used to mitigate waterlogging damage. Further research should be focused on: cost/benefit analyses of different drainage strategies; understanding the mechanisms of nutrient loss during waterlogging and quantifying the benefits of nutrient application; increasing soil profile de-watering through soil improvement and agronomic strategies; revealing specificity of the interaction between different management practices and environment as well as among management practices; and more importantly, combined genetic, agronomic and engineering strategies for varying environments.

show abstract

“…An atmospheric boundary condition was applied at the top of the transport domain using evapotranspiration values calculated by the Penman-Monteith approach (Monteith, 1981). Transpiration was calculated for maize (Zea Mays L., 2009, 2010, 2012 and barley (Hordeum vulgare L., 2011) which were grown at the actual location. Again, a seepage face boundary condition was selected to represent the tile drain.…”

Section: Simulated Scenariosmentioning

confidence: 99%

“…Water flow and solute transport to tile drains has been also evaluated using the HYDRUS family of codes (Šimůnek et al, 2008). For example, the HYDRUS-2D software package was used by De Vos et al (2000, 2002 to simulate nitrate transport in a tile-drained layered silt loam soil in a reclaimed Dutch polder, or by Castanheira and Serralheiro (2010) to evaluate the impact of mole drains on salinity of a vertisol under irrigation.…”

Section: Introductionmentioning

confidence: 99%

“…Most of modeling studies considered water flow in one-or two-dimensional soil profiles, either taking into account only tile drainage without mole drainage or mole drainage without tile drainage (e.g., Castanheira and Serralheiro, 2010), but not both in a fully three-dimensional system. This is mainly because mole drains, being installed in a perpendicular direction to tile drains, make the entire system three-dimensional.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical simulation of water flow in tile and mole drainage systems

Filipović

Mallmann

Coquet

et al. 2014

Agricultural Water Management

View full text Add to dashboard Cite

International audienceTile drainage systems are sometimes not sufficient to provide favorable unsaturated conditions in the rootzone. These drainage systems then need to be supplemented with an additional high conductivity material in the trenches above the tiles or by implementing mole drainage. The HYDRUS (2D/3D) model was used to evaluate the impact of such additional measures for heavy clay soil. Three types of drainage systems were simulated: (i) tile drains, (ii) tile drains with gravel trenches, and (iii) tile drains with gravel trenches and mole drains, using either two-dimensional (the former two systems) or three-dimensional (the latter one) transport domains. Three scenarios were considered to test the efficiency of each system: (i) time to drain an initially saturated system, (ii) high intensity rainfall, and (iii) a real case scenario. Different horizontal spacings between tile drains with or without gravel trenches were also compared with the system which included mole drainage. The results showed that the drainage system that included mole drains and gravel trenches was the most efficient. This system provided the largest drainage rate, was the first to reach steady-state in the time to drain scenario, and also efficiently reduced surface runoff. Adding mole drains to a system with tile drains and gravel trenches resulted in a large reduction of surface runoff (75%). Simulations showed that the spacing of tile drains with or without gravel trenches would have to be 40% or 55% smaller, respectively, in order to reproduce the same water table levels as those observed for the drainage system with mole drains. Therefore, introducing mole drains in drainage systems is an efficient practice for reducing waterlogging and runoff

show abstract

Impact of mole drains on salinity of a vertisoil under irrigation

Cited by 15 publications

References 9 publications

A Review of Soil-Improving Cropping Systems for Soil Salinization

A Review of Soil-Improving Cropping Systems for Soil Salinization

Soil and Crop Management Practices to Minimize the Impact of Waterlogging on Crop Productivity

Numerical simulation of water flow in tile and mole drainage systems

Contact Info

Product

Resources

About