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During the last two decades, Argentine agriculture has been transformed, definitively changing its agro-productive profile. The incorporation of direct sowing as a conservationist practice, together with its associated package of glyphosate herbicide and the cultivation of genetically-modified soy are the pillars on which this model is built, oriented toward the intensification of both agriculture (agriculturalization) and stock-breeding (feedlot). The environmental problems associated with this model are reflected in an important loss of nutrients, the rise in exports of virtual water, the appearance of new blights, diseases and resistant weeds and the deforestation of several eco-regions. Even areas of high population like the River Luján Basin are beginning to feel these impacts. The study is focused on an analysis of the evolution and condition of soil nutrients, as an indicator of the loss of environmental, social and economic quality. [ABSTRACT FROM AUTHOR]