Sustainable intensive agriculture: evidence from aqueous geochemistry
2013
Bourrié, Guilhem | Trolard, Fabienne | Chanzy, Andre | Ruget, Francoise | Lecerf, Rémi | Charron, François | Unité de recherche Géochimie des Sols et des Eaux (URGSE) ; Institut National de la Recherche Agronomique (INRA) | Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes (EMMAH) ; Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Gestion de l'Eau, Acteurs, Usages (UMR G-EAU) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-AgroParisTech-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut de Recherche pour le Développement (IRD [Occitanie])
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Show more [+] Less [-]English. Geochemical and crop models allow for simulating the concentration of irrigation water (Durance River) by evapo-transpiration, equilibration with soil pCO 2 , dissolution / precipitation of calcite, dissolution of fertilizers (P-K, no N), and apatite precipitation. Nutrient absorption is simulated as removal of the corresponding ions from the solution. The results show that the crop system in the Crau plain has thus protected and ameliorated soils since the XVI th century, while sustaining production of high quality crops and a correct income for farmers. This has been made possible by investments in water control (irrigation and drainage). It is now endangered by urban sprawl.
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