Direct seeding mulch-based cropping increases both the activity and the abundance of denitrifier communities in a tropical soil

International audience; This study evaluated the impact of direct seeding mulch-based cropping (DMC), as an alternative to conventional tilling (CT), on a functional community involved in N cycling and emission of greenhouse gas nitrous oxide (N2O). The study was carried out for annual soybean/rice crop rotation in the Highlands of Madagascar. The differences between the two soil management strategies (direct seeding with mulched crop residues versus tillage without incorporation of crop residues) were studied along a fertilization gradient (no fertilizer, organic fertilizer, organic plus mineral fertilizers). The activity and size of the denitrifier community were determined by denitrifica…

Changement d'usage des terres et fonctionnement microbien : le cas du semis direct sous couverture végétale à Madagascar

National audience

Diversity of the nitrate reductase genes in the Pseudomonas genus

How agricultural practices affect the different bacterial communities involved in the denitrification process: the case of direct seeding in Madagascar

International audience

Influencce of elevated atmospheric pCO2 on the culturable nitrate-dissimilating Pseudomonas and their nitrate reductases in the rhizosphere of perennial grasses

Impact of fertilization and direct seeding on activity and abundance of key denitrifier communities in a tropical soil

Affiche, résumé; The aim of this work was to investigate to which extent different practices impacted on the bacterial communities involved in N2O emission.