BoudreauCaronElrickEtAl2009

Référence

Boudreau, J., Caron, J., Elrick, D., Fortin, J.A. and Gallichand, J. (2009) Solute transport in sub-irrigated peat-based growing media. Canadian Journal of Soil Science, 89(3):301-313. (Scopus )

Résumé

Boudreau, J., Caron, J., Elrick, D., Fortin, J. and Gallichand, J. 2009. Solute transport in sub-irrigated peat-based growing media. Can. J. Soil Sci. 89: 301-313 New legislation to reduce the amount of fertilizer leached into the environment by horticultural growers and the need to implement water-saving irrigation systems require an understanding of salt build-up and of nutrient cycles in order to develop efficient water-use strategies for growers. Solute transport in growing media is central to this process, but has received little attention thus far. The objectives of this study were to determine how solutes behave in sub-irrigated growing media and to assess a solute transport model for these media. A steady state evaporation (upward water flow) experiment was carried out with three different growing media in packed columns in the laboratory. Bromide, potassium and copper concentrations were determined usingin-column pore water solution samplers and by sectioningthe columns at the end of the experiment to obtain concentration profiles. The Hydrus-1D model was fitted to the solution sampler data assumingnon-linear Freundlich adsorption, and then used to obtain favorable predictions of the measured concentration profiles. Independent adsorption isotherm results from batch experiments were found to be inadequate when used to predict solute movement and the results indicate that the preferred approach is an in-column evaluation of the transport parameters.

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@ARTICLE { BoudreauCaronElrickEtAl2009,
    AUTHOR = { Boudreau, J. and Caron, J. and Elrick, D. and Fortin, J.A. and Gallichand, J. },
    TITLE = { Solute transport in sub-irrigated peat-based growing media },
    JOURNAL = { Canadian Journal of Soil Science },
    YEAR = { 2009 },
    VOLUME = { 89 },
    NUMBER = { 3 },
    PAGES = { 301-313 },
    NOTE = { cited By 5 },
    ABSTRACT = { Boudreau, J., Caron, J., Elrick, D., Fortin, J. and Gallichand, J. 2009. Solute transport in sub-irrigated peat-based growing media. Can. J. Soil Sci. 89: 301-313 New legislation to reduce the amount of fertilizer leached into the environment by horticultural growers and the need to implement water-saving irrigation systems require an understanding of salt build-up and of nutrient cycles in order to develop efficient water-use strategies for growers. Solute transport in growing media is central to this process, but has received little attention thus far. The objectives of this study were to determine how solutes behave in sub-irrigated growing media and to assess a solute transport model for these media. A steady state evaporation (upward water flow) experiment was carried out with three different growing media in packed columns in the laboratory. Bromide, potassium and copper concentrations were determined usingin-column pore water solution samplers and by sectioningthe columns at the end of the experiment to obtain concentration profiles. The Hydrus-1D model was fitted to the solution sampler data assumingnon-linear Freundlich adsorption, and then used to obtain favorable predictions of the measured concentration profiles. Independent adsorption isotherm results from batch experiments were found to be inadequate when used to predict solute movement and the results indicate that the preferred approach is an in-column evaluation of the transport parameters. },
    AUTHOR_KEYWORDS = { Growing media; Peat; Solute transport; Sub-irrigation },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.4141/CJSS08023 },
    KEYWORDS = { agri-environmental policy; concentration (composition); experimental study; fertilizer application; horticulture; irrigation system; leaching; nutrient cycling; peat; solute transport; water management },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-68049129684&partnerID=40&md5=2891c0bff664db0f2ca2d544469e2d31 },
}

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