Positive or neutral effects of biochar-compost mixtures on earthworm communities in a temperate cropping system

Honvault Nicolas, Houben David, Lebrun Manhattan, Védère Charlotte, Nobile Cécile, Guidet Julien, Kervroëdan Léa, Aubertin Marie-Liesse, Rumpel Cornelia, Faucon Michel-Pierre, Dulaurent Anne-Maïmiti. 2023. Positive or neutral effects of biochar-compost mixtures on earthworm communities in a temperate cropping system. Applied Soil Ecology, 182:104684, 7 p.

Résumé : Biochar is increasingly considered an efficient amendment to improve soil fertility and store carbon in soils for climate change mitigation. However, few field studies have evaluated biochar impacts on soil fauna and especially earthworms in temperate areas despite their importance for soil structure and laboratory-based evidence of potential adverse effects. We investigated the effects of three biochars (from rapeseed, miscanthus and compost reject) in mixture with a green waste compost on the abundance and composition of earthworm communities during a three-year field experiment in northern France. Compost alone or biochar-compost mixtures were applied at 11.7 t dry matter ha−1 and compared to equivalent mineral fertilization. Biochar-compost mixtures did not affect total earthworm density and biomass, while contrasting effects concerning specific ecological groups were observed. Compost addition increased juvenile endogeic earthworm density roughly one month after amendment while no adverse short-term effects of biochar-compost mixtures were observed. Two years after amendment application, anecic earthworm density was higher for the mixture with compost and biochar from compost rejects, which also resulted in the highest soil organic carbon concentrations. We conclude that biochar-compost mixtures at low but more economically viable biochar application rates could be used as an increasingly understood beneficial soil amendment under temperate climate conditions without adverse effects on earthworm communities.

Mots-clés géographiques Agrovoc : France

Mots-clés libres : Earthworms, Biochar, Compost, Anecic, Endogeic, Agroecology

Classification Agris : P34 - Biologie du sol
P35 - Fertilité du sol
F04 - Fertilisation

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Auteurs et affiliations

• Honvault Nicolas, UniLaSalle (FRA) - auteur correspondant
• Houben David, UniLaSalle (FRA)
• Lebrun Manhattan, INRAE (FRA)
• Védère Charlotte, INRAE (FRA)
• Nobile Cécile, CIRAD-PERSYST-UPR Recyclage et risque (REU) ORCID: 0000-0002-3792-0332
• Guidet Julien, UniLaSalle (FRA)
• Kervroëdan Léa, UniLaSalle (FRA)
• Aubertin Marie-Liesse, INRAE (FRA)
• Rumpel Cornelia, CNRS (FRA)
• Faucon Michel-Pierre, UniLaSalle (FRA)
• Dulaurent Anne-Maïmiti, UniLaSalle (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/602666/)

Métriques

[ Page générée et mise en cache le 2024-04-13 ]