Effect of organic manure and the endogeic earthworm Pontoscolex corethrurus Oligochaeta: Glossoscolecidae on soil fertility and bean productionReportar como inadecuado




Effect of organic manure and the endogeic earthworm Pontoscolex corethrurus Oligochaeta: Glossoscolecidae on soil fertility and bean production - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

* Corresponding author 1 Laboratoire d-Ecologie Générale 2 INFOSOL - Unité de service Infosol 3 ONF - Office National des Forêts 4 LEST - Laboratoire d-Ecologie des Sols Tropicaux

Abstract : A biofertilisation assay was conducted in Maripasoula French Guiana, testing the effects of three different organic amendments manioc peels, sawdust and wood charcoal and the inoculation of the endogeic earthworm Pontoscolex corethrurus on pod production of Vigna unguiculata sesquipedalis and on soil chemical properties pH, C, N, total and exchangeable P and K. Pod production was highest with manioc peels as available P increased in the soil. Wood charcoal also had a beneficial effect on pod production as it decreased acidity and increased the C:N ratio in the soil. In sawdust-amended soil, pod production did not differ from that in unamended soil. Inoculation of earthworms at a density of 80 sub-adults m-2 did not significantly affect either pod production or soil nutrient content directly, although it increased the positive effect of manioc peels on pod production. Soil nutrient content, pod production and earthworm density at the end of the experiment were negatively correlated with soil moisture and positively with each other. Despite the strong effect of moisture, this assay demonstrated an interaction between the earthworm P. corethrurus and the legume V. unguiculata sesquipedalis mediated by soil nutrient content and organic matter inputs. We conclude that manioc peels improved soil P availability and were an interesting amendment for legume crops. We discuss also the effect of earthworm inoculation.

Mots-clés : Pontoscolex corethrurus Vigna unguiculata sesquipedalis earthworm density soil nutrient content manioc peels





Autor: Stéphanie Topoliantz - Jean-François Ponge - Dominique Arrouays - Sylvain Ballof - Patrick Lavelle -

Fuente: https://hal.archives-ouvertes.fr/



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