Effect of agricultural practices on N2O emissions from Malagasy soils

Martinet Marianne, Chapuis-Lardy Lydie, Metay Aurélie, Douzet Jean-Marie, Rabenarivo Michel, Razafimbelo-Andriamifidy Tantely, Toucet-Louri Joële, Rakotoarisoa Jacqueline, Rabeharisoa R. Lilia. 2007. Effect of agricultural practices on N2O emissions from Malagasy soils. In : International Symposium Organic Matter Dynamics in Agro-Ecosystems, Poitiers, France, 16-19 juillet 2007. s.l. : s.n., 2 p. International Symposium on Organic Matter Dynamic in Agro-Ecosystems, Poitiers, France, 16 Juillet 2007/19 Juillet 2007.

Résumé : Emissions of nitrous oxide (N20) are of concern because of the role of this gas in the greenhouse effect. The agricultural practices may affect the rate of N20 emissions from soil. The work focuses on 2 contrasted practices in use in Malagasy Highlands, i.e. a direct seeding on cover crop residues (SD) and a hand ploughing without residue return to soil (HP). Regarding potential denitrification and in situ N20 emissions, no difference was shown between both practices. Other measurements are currently in progress to confirm/invalidate this preliminary result.

Classification Agris : P33 - Chimie et physique du sol

Auteurs et affiliations

• Martinet Marianne, ISTOM (FRA)
• Chapuis-Lardy Lydie, IRD (FRA)
• Metay Aurélie, ISTOM (FRA)
• Douzet Jean-Marie, CIRAD-PERSYST-URP SCRID (MDG) ORCID: 0000-0002-8401-6012
• Rabenarivo Michel, IRD (FRA)
• Razafimbelo-Andriamifidy Tantely, LRI (MDG)
• Toucet-Louri Joële, IRD (FRA)
• Rakotoarisoa Jacqueline, CENDRADERU (MDG)
• Rabeharisoa R. Lilia, LRI (MDG)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/544611/)

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