Effects of agricultural practices on hydraulic properties and water movement in soils in Brittany (France)

Ndiaye, Bara; Molénat, Jérôme; Hallaire, Vincent; Gascuel, Chantal; Hamon, Yannick

doi:10.1016/j.still.2006.04.005

Cited by 55 publications

(44 citation statements)

References 34 publications

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“…Leaching is substantially reduced when the hydraulic conductivity of the media is lower for a stabilised soil and substantially increases when the hydraulic conductivity is increased (Rao and Mathew, 1995). In fine grain soils, the hydraulic conductivity under saturated conditions is controlled by the microstructure of the soil matrix which in turn depends on the type of the fine materials (e.g., clay mineral) present in the soil, the composition of the exchangeable cations, and the electrolyte concentration in the pore water system (Ndiaye et al, 2007). It has long been recognized that hydraulic conductivity is related to the grain size distribution of granular porous media (Bardhan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of saturated hydraulic conductivity from soil properties in an Inceptisol using different land cover and depths

Kisku

Datta

Basak

et al. 2017

JANS

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Three soil profiles from Regional Research Station of Bidhan Chandra Krishi Viswavidyalaya, Gayeshpur situated in New Alluvial zone of Nadia district, West Bengal were studied to assess the predictability of the hydraulic conductivity of the soil as influenced by different physical and chemical and properties of cultivated and forest land. The various statistical procedures were employed on the measured laboratory based data for comprehensive agreement of dependent hydraulic conductivity of soils as a model function of independent soil variables that is likely to be useful for different land cover systems. Soils are neutral in reaction, silty clay to silty clay loam in nature. Forest soil contained greater organic carbon (OC)(5.9 ± 0.16 g kg ). Jhau plantation recorded the highest value (6.8 g kg -1) of OC due to soil texture and cation exchange capacity (CEC). Soil hydraulic conductivity was greater in soil for cabbage and Sagun tree among the cultivated and forest soil studied with values 2.80 and 1.10 cmh -1. Correlation study showed a positive and negative relation with hydraulic conductivity for sand (r= 0.68; P > 0.05) and clay (r= -0.71; P > 0.05) respectively. Further, principal component analysis concluded that addition of bulk density with clay and sand can predict the hydraulic conductivity for different land uses.

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Section: Introductionmentioning

confidence: 99%

Evaluation of saturated hydraulic conductivity from soil properties in an Inceptisol using different land cover and depths

Kisku

Datta

Basak

et al. 2017

JANS

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“…However, producers are reluctant to adopt these practices as their effects on soil and crop production are not yet well understood (Alletto et al, 2011). The impact of tillage practices on soil hydraulic properties (Ndiaye et al, 2007;Sauer et al, 1990;Schwen et al, 2011a,b;Strudley et al, 2008) and their consequences on preferential flow (Elliott et al, 2000;Kulasekera et al, 2011), soil state variables (soil water content and soil temperature) (Kovar et al, 1992;Tan et al, 2002), soil physical properties (soil penetration resistance, soil bulk density, soil porosity) (Jabro et al, 2009), and plant growth (Alletto et al, 2011;Zhang et al, 2011) have been subject to intensive research over the past decade. However, according to the recent review by Strudley et al (2008), experimental results from field and laboratory studies do not show consistent effects of tillage practices on soil properties.…”

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confidence: 99%

Characterization of tillage effects on the spatial variation of soil properties using ground-penetrating radar and electromagnetic induction

et al. 2013

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Tillage practices influence physical, chemical, and biological soil properties, which also affect soil quality and consequently plant growth. In this study, the main objective was to evaluate the effects of different tillage practices on soil physical properties such as soil water content (SWC) by using geophysical methods, namely, ground-penetrating radar (GPR) and electromagnetic induction (EMI). Additional measurements such as soil sampling, capacitance probe, and soil penetrometer data were acquired as ground truths. The study was performed for three contrasting tillage practices, i.e., conventional tillage (CT), deep loosening tillage (DL), and reduced tillage (RT), applied on different plots of an agricultural field. The data showed that tillage influences soil resistance in shallow soil layers (deeper tillage decreases soil resistance), which could be partly seen in on-ground GPR data. In addition, reference SWC measurements (capacitance probes and soil sampling) were in fairly good agreement with the water content estimates from off-ground GPR. We also observed a tillage effect on shallow surface SWC, while deeper SWC seems to be unaffected by tillage. Mean surface SWC was significantly lower for CT compared to DL and RT, which was partly explained by lower pore connectivity between the topsoil and the deeper layers after conventional tillage. Moreover, the variance of the SWC within the conventional tillage plots was larger than within the other plots. This larger SWC variability could be explained by a greater soil heterogeneity induced by the plowing process. Overall, this study confirms the potential of GPR and EMI for the determination of soil physical properties at the field scale and for the assessment of agricultural management practices.

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“…Thus, at this pressure head and PWP water content, the water is retained in soil micropores, which is not affected by land-use type. As reported by Ndiaye et al (2007), the n parameter is influenced by soil texture, which is related to soil particle size distribution. This parameter can be changed with alteration of soil, sand, silt, and clay particles (Porebska et al 2006).…”

Section: Modeling Performancementioning

confidence: 87%

“…Overall, the results show that the soil pore system and reduced total porosity under dryland farming can decrease water storage capacity at water potentials of -33 and 0 kPa. A previous study has shown that improper soil management decreases the soil macroporosity in the longterm affecting the h s (Ndiaye et al 2007). Higher porosity of rangeland soils when compared with cropland soils and higher saturated water content in pasture soils when compared with dryland farming soils were found by Sonneveld et al (2003).…”

Section: Discussionmentioning

confidence: 99%

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Estimation of soil hydraulic parameters for different land-uses

Fashi

Gorji

Shorafa

2016

Model. Earth Syst. Environ.

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Water retention capacity and saturated hydraulic conductivity are important soil hydraulic properties that affect soil productivity and the environment. The knowledge of soil water properties and land-use effects on these properties are important for efficient soil and water management. The aim of this work was to evaluate the effect of cultivation of rangelands on soil water retention. Furthermore, the use of the van Genuchten equation to estimate soil saturated water content (h s ) and water content (h h ) was assessed. The comparison of the parameters of this equation [water release parameters (a and n) and residual water content (h r )] obtained in cultivated and rangelands was also evaluated. Moreover, a comparison between measured and estimated soil saturated hydraulic conductivity (K s ) by several selected pedotransfer functions (PTFs) was performed. The study showed that the land-use effect on soil water retention was significant only at water potentials of -33 and 0 kPa in the top 15 cm of the soil. At the -1500 kPa pressure head, water content was not affected by the land-use type at soil depths of 0-15 cm and 15-30 cm. In this study, a, n, and h r values were not significantly different between the two land-use types. The fit of the van Genuchten model to water retention data resulted in a low sum of squared errors and high coefficient determination values. Overall, the van Genuchten equation can be used as a physically based model for soil water retention characterization in the studied area. However, this model was not able to accurately estimate K s . No distinct trend for estimated K s by the selected PTFs in the studied area was observed. Thus, it is essential to evaluate the model applicability for different soils at various sites.

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Effects of agricultural practices on hydraulic properties and water movement in soils in Brittany (France)

Cited by 55 publications

References 34 publications

Evaluation of saturated hydraulic conductivity from soil properties in an Inceptisol using different land cover and depths

Evaluation of saturated hydraulic conductivity from soil properties in an Inceptisol using different land cover and depths

Characterization of tillage effects on the spatial variation of soil properties using ground-penetrating radar and electromagnetic induction

Estimation of soil hydraulic parameters for different land-uses

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