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Conversion of a conventional to an organic mixed dairy farming system : consequences in terms of N fluxes

Barataud, Fabienne; Foissy, Damien; Fiorelli, Jean-Louis; Beaudoin, Nicolas and Billen, Gilles (2015) Conversion of a conventional to an organic mixed dairy farming system : consequences in terms of N fluxes. Agroecology and Sustainable Food Systems, pp. 978-1002.

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Document available online at: https://hal.inrae.fr/hal-02632735


Summary

Organic farming practices are a possible way to reconcile agricultural production and water quality, but the comparative merits of conventional and organic practices regarding the nitrogen (N) issue are complex and still being debated. This study was designed to investigate the choice governing conversion to organic farming of en experimental mixed dairy farm in Lorraine (eastern France) and to highlight the assoicated changes in N fluxes. The study was conducted over a suitably long period of time at a farm scale integrating the diversity of practices in one conventional and then two autonomous organic systems (a grazing livestock system and a mixed dairy system). Two indicators were used to draw up the main features. First, the farm-gate N budgets show the the organic farm has a balance twice as low as the conventional system. Second, the soil surface balance exhibited substantial differences between functional zones. Finally, this study shows that an accurate estimation of soil surface balance requires taking into account the spatial distribution within the farm area based on practices and their rationale.


EPrint Type:Journal paper
Keywords:organic farming (en), farm scale (en), nitrogen budget (fr), agricultural practice (fr)
Subjects:"Organics" in general
Research affiliation: France > INRAe - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
ISSN:ISSN: 2168-3573
DOI:10.1080/21683565.2015.1067940
Project ID:HAL-INRAe
Deposited By: PENVERN, Servane
ID Code:41067
Deposited On:12 Aug 2021 10:37
Last Modified:12 Aug 2021 10:37
Document Language:English

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