Soil water diffusivity: a simple laboratory method for its determination

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Soil water diffusivity (D) is an important hydraulic property that is fundamental to characterize unsaturated watertransport. Its determination is complex, time-consuming and requires expensive instruments. The objectives of this workwere: to propose a simple and low-cost laboratory methodology to d...

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Autores principales:	Villarreal, Rafael, Lozano, Luis Alberto, Soracco, Carlos Germán, Filgueira, Roberto Raúl, Sarli, Guillermo Oliverio
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2016
Materias:	Ciencias Agrarias Unsaturated water movement Sorptivity Richards' equation Movimento de água no solo não saturado Sortividade Equação de Richards
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/97422 https://ri.conicet.gov.ar/11336/55021 https://www3.ufrb.edu.br/seer/index.php/wrim/article/view/1585
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-97422
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Agrarias Unsaturated water movement Sorptivity Richards' equation Movimento de água no solo não saturado Sortividade Equação de Richards
spellingShingle	Ciencias Agrarias Unsaturated water movement Sorptivity Richards' equation Movimento de água no solo não saturado Sortividade Equação de Richards Villarreal, Rafael Lozano, Luis Alberto Soracco, Carlos Germán Filgueira, Roberto Raúl Sarli, Guillermo Oliverio Soil water diffusivity: a simple laboratory method for its determination
topic_facet	Ciencias Agrarias Unsaturated water movement Sorptivity Richards' equation Movimento de água no solo não saturado Sortividade Equação de Richards
description	Soil water diffusivity (D) is an important hydraulic property that is fundamental to characterize unsaturated watertransport. Its determination is complex, time-consuming and requires expensive instruments. The objectives of this workwere: to propose a simple and low-cost laboratory methodology to determine D function; and to analyze the influence of soilmanagement systems on D and Sorptivity (S). The studied soil was classified as a vertic Paleudol. The first 10 cm of the soilunder three different management systems (T1: Natural grassland, T2: direct drilling, and T3: Polyphitic Pasture) was sampled.The samples were sieved and packed into horizontal columns. The columns were analyzed under horizontal infiltration and Dwas determined by variations of water content as a function of time for fixed positions, obtained from low-cost soil moisturecapacitance sensors. The results showed that the proposed methodology is valid in the studied soils. Soil management systemsignificantly affected D and S. They were greater for T2 compared with T1 and T3 (D varied between 0.00033 and 0.0321cm2.s-1). This means that the soil under T2 can transmit water faster under non-saturated conditions as compared with thesoil under grazing. In conclusion, the proposed methodology allowed to determine D in a simple and low-cost way, and todetermine the influence of these properties on productive conditions.
format	Articulo Articulo
author	Villarreal, Rafael Lozano, Luis Alberto Soracco, Carlos Germán Filgueira, Roberto Raúl Sarli, Guillermo Oliverio
author_facet	Villarreal, Rafael Lozano, Luis Alberto Soracco, Carlos Germán Filgueira, Roberto Raúl Sarli, Guillermo Oliverio
author_sort	Villarreal, Rafael
title	Soil water diffusivity: a simple laboratory method for its determination
title_short	Soil water diffusivity: a simple laboratory method for its determination
title_full	Soil water diffusivity: a simple laboratory method for its determination
title_fullStr	Soil water diffusivity: a simple laboratory method for its determination
title_full_unstemmed	Soil water diffusivity: a simple laboratory method for its determination
title_sort	soil water diffusivity: a simple laboratory method for its determination
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/97422 https://ri.conicet.gov.ar/11336/55021 https://www3.ufrb.edu.br/seer/index.php/wrim/article/view/1585
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Soil water diffusivity: a simple laboratory method for its determination

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