Perron T. auteur aut IRD Legrand M. auteur aut IRD Janeau Jean-Louis auteur aut IRD Manizan A. auteur aut IRD Vierling C. auteur aut IRD Kouakou A. auteur aut IRD Brauman Alain auteur aut IRD Gay F. auteur aut IRD Laclau J. P. auteur aut IRD Mareschal L. auteur aut IRD text journalArticle eng text/pdf born digital access Soil erosion on agricultural land is a major threat for food and raw materials production. It has become a major concern in rubber (Hevea brasiliensis) plantations introduced on sloping ground. Alternative agroecological crop management practices must be investigated. One aim of our study was to assess the ability of logging residues (i. e., trunks, branches, leaves and stumps of a clearcut plantation) and of legume cover (Pueraria phaseoloides) to mitigate N, P and K losses through runoff and soil detachment in a young rubber plantation. The other aim was to investigate the relationships of these nutrient losses with soil structure and soil macrofauna diversity. Runoff and soil loss were monitored for 3 years using 1-m2 plots under different practices as regards the management of logging residues and the use or not of a legume. The monitoring started when rubber trees were one-year-old. The planting row, where soil was bare, was the hotspot of soil erosion, with an average runoff of 832 mm y-1 and soil loss of 3.2 kg m- 2 y-1. Sowing a legume in the inter -row reduced runoff and soil loss by 88 % and 98 % respectively, compared to bare soil. Spreading logging residues as well as growing a legume cover almost eliminated runoff and soil detachment (19 mm y-1 and 4 g m- 2 y-1 respectively). Nutrient losses were negligible as long as the soil surface was covered by a legume crop, with or without logging residues. Total N loss from soil detachment ranged from 0.02 to 0.2 g m- 2 y-1, for example. Spreading logging residues in the inter -rows significantly improved soil structure and soil macrofauna diversity compared to bare soil. Nutrient losses from runoff and soil detachment were negatively correlated with improved soil structure and soil macrofauna diversity. We recommend investigating alternative ways to manage planting rows. specialized Soil erosion Nutrient Spatial heterogeneity Soil biodiversity Soil structure Agroecology 068 076 082 913 169335 [15 p.] 2024 0048-9697 https://www.documentation.ird.fr/hor/fdi:010089476 10.1016/j.scitotenv.2023.169335 0048-9697 [F B010089476] https://www.documentation.ird.fr/hor/fdi:010089476 https://www.documentation.ird.fr/intranet/publi/2024-03/010089476.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2024-03-06 2026-06-12 fdi:010089476 fre