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dc.creatorArias Fariñas, Nereaes_ES
dc.creatorVirto Quecedo, Íñigoes_ES
dc.creatorEnrique Martín, Albertoes_ES
dc.creatorBescansa Miquel, Palomaes_ES
dc.creatorWalton, Rileyes_ES
dc.creatorWendroth, Olees_ES
dc.date.accessioned2019-11-12T13:50:18Z
dc.date.available2019-11-12T13:50:18Z
dc.date.issued2019
dc.identifier.issn2073-4441
dc.identifier.urihttps://hdl.handle.net/2454/35364
dc.description.abstractStony soils are distributed all over the world. The study of their characteristics has gained importance lately due to their increasing use as agricultural soils. The effect that rock fragments exert on the soil hydraulic properties is difficult to measure in situ, and is usually derived from the fine earth properties. However, the corrections used so far do not seem accurate for all types of stony soils. Our objective was to assess the adequacy of estimating the hydraulic properties of a stony soil from the fine earth ones by correcting the latter by the volume occupied by rock fragments. To do that, we first assessed the validity of different approaches for estimating the hydraulic properties of a stone-free and a stony (40% rock fragments) cylinder prepared with samples from the same silt loam soil. The functions relating to the soil hydraulic properties (-h, K-h-) were estimated by the Wind method and by inverse estimation, using data from an evaporation experiment where the soil water content and pressure head were measured at different soil depths over time. Results from the evaporation experiment were compared to those obtained by applying the equation that corrects fine earth properties by the rock fragments volume. Wind and the Inverse Estimation methods were successfully applied to estimate soil water content and hydraulic conductivity from the stony soil experiment, except for some uncertainties caused by the limited range of suction in which the experiment was conducted. The application of an equation for adjusting the soil water content at different pressure heads (allowing for defining the soil water retention curve, SWRC), and the unsaturated hydraulic conductivity (K) directly from the stone content was not satisfactory. K values obtained from the measured data were higher than those inferred by the correcting equation in the wet range, but decreased much faster with a decreasing pressure head. The use of this equation did therefore not take into account the effect that the creation of lacunar pores by the presence of rock fragments likely exerts on water flow processes. The use of such correction needs therefore to be revised and new approaches are needed for estimating the hydraulic conductivity in stony soils. In relation to SWRC, a new equation to calculate the water content of a stony soil accounting for the influence of possible lacunar pores is proposed.en
dc.description.sponsorshipThis research was funded by the Spanish National Institute of Agricultural Research (INIA) and FEDER European founds (Project RTA2010-00006-C03-03 and N. Arias Ph.D. scholarship). This is publication No. 00-00-000 of the Kentucky Agricultural Experiment Station and is published with the approval of the Director. This work is supported by the National Institute of Food and Agriculture, U.S., Multistate Project 1008973.en
dc.format.extent22 p.
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherMDPIen
dc.relation.ispartofWater 2019, 11(3), 440en
dc.rights© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectStony soilsen
dc.subjectSoil hydraulic propertiesen
dc.subjectSoil water retention curveen
dc.subjectUnsaturated hydraulic conductivityen
dc.subjectWind methoden
dc.subjectInverse estimationen
dc.titleEffect of stoniness on the hydraulic properties of a soil from an evaporation experiment using the wind and inverse estimation methodsen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeArtículo / Artikuluaes
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Cienciases_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Zientziak Sailaeu
dc.contributor.departmentUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. ISFOOD - Institute on Innovation & Sustainable Development in Food Chaines_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.identifier.doi10.3390/w11030440
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/6PN/RTA2010-00006en
dc.relation.publisherversionhttps://doi.org/10.3390/w11030440
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.type.versionVersión publicada / Argitaratu den bertsioaes


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© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license.
Except where otherwise noted, this item's license is described as © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.