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dc.contributor.author
Blengino Albrieu, Jorge Luis
dc.contributor.author
Reginato, Juan Carlos
dc.contributor.author
Tarzia, Domingo Alberto
dc.date.available
2019-09-24T15:46:01Z
dc.date.issued
2015-06
dc.identifier.citation
Blengino Albrieu, Jorge Luis; Reginato, Juan Carlos; Tarzia, Domingo Alberto; Modeling water uptake by a root system growing in a fixed soil volume; Elsevier Science Inc; Applied Mathematical Modelling; 39; 12; 6-2015; 3434-3447
dc.identifier.issn
0307-904X
dc.identifier.uri
http://hdl.handle.net/11336/84266
dc.description.abstract
The water uptake by roots of plants is examined for an ideal situation, with an approximation that resembles plants growing in pots, meaning that the total soil volume is fixed. We propose a coupled water uptake-root growth model. A one-dimensional model for water flux and water uptake by a root system growing uniformly distributed in the soil is presented, and the Van Genuchten model for the transport of water in soil is used. The governing equations are represented by a moving boundary model for which the root length, as a function of time, is prescribed. The solution of the model is obtained by front-fixing and finite element methods. Model predictions for water uptake by a same plant growing in loam, silt and clay soils are obtained and compared. A sensitivity analysis to determine relative effects on water uptake when system parameters are changed is also presented and shows that the model and numerical method proposed are more sensitive to the root growth rate than to the rest of the parameters. This sensitivity decreases along time, reaching its maximum at 30. days. A comparison of this model with a fixed boundary model with and without root growth is also made. The results show qualitative differences from the beginning of the simulations, and quantitative differences after 10. days of simulations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MOVING BOUNDARY
dc.subject
PLANT ROOT GROWING
dc.subject
WATER UPTAKE
dc.subject.classification
Matemática Aplicada
dc.subject.classification
Matemáticas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Modeling water uptake by a root system growing in a fixed soil volume
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-09-23T17:11:26Z
dc.journal.volume
39
dc.journal.number
12
dc.journal.pagination
3434-3447
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Blengino Albrieu, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
dc.description.fil
Fil: Reginato, Juan Carlos. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
dc.description.fil
Fil: Tarzia, Domingo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Austral. Facultad de Ciencias Empresariales. Departamento de Matemáticas; Argentina
dc.journal.title
Applied Mathematical Modelling
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.apm.2014.11.042
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0307904X14006374
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