Effects of four organic amendments on banana parasitic nematodes and soil nematode communities

Tabarant Perrine, Villenave Cécile, Risède Jean-Michel, Roger-Estrade Jean, Thuriès Laurent, Dorel Marc. 2011. Effects of four organic amendments on banana parasitic nematodes and soil nematode communities. Applied Soil Ecology, 49 (1) : 59-67.

Quartile : Q1, Sujet : SOIL SCIENCE

Résumé : Plant-parasitic nematodes are injurious crop pests that have been managed mainly by chemical nematicides. However, safe and alternative methods such as those based on organic materials need to be developed. Our study has evaluated (i) the effects of four organic amendments with different biochemical compositions that are abundantly produced in the study area (Guadeloupe, French West Indies) on soil nematode communities and (ii) some of the suppression mechanisms of banana parasitic nematodes, especially those involving the soil food web. This study is based on a microcosm experiment comparing sugarcane bagasse, sugarcane sludge, plant residues and sewage sludge. All amendments except sewage sludge decreased the root abundances of plant-parasitic nematodes, by 96% in the case of sugarcane bagasse. For this treatment, soil densities of carnivorous nematodes were six times higher than the treatments without organic amendment. Plant residues and bagasse were mainly composed of materials that are difficult to decompose, namely cellulose and lignins. These organic materials favored a fungal decomposition pathway and permitted development of carnivorous nematode populations and increased the Channel Index (CI). Pratylenchus coffeae control after sugarcane refinery sludge application remains unexplained. Lastly, sewage sludge, composed mainly of easily degradable compounds, did not permit nematode control, and only bacterivorous nematode populations were enhanced by this treatment.

Mots-clés Agrovoc : Musa, amendement organique, nématode des plantes, nématode à vie libre, lutte biologique, lignine, cellulose, faune du sol, déchet organique, bagasse, boue d'épuration, résidu de récolte, agroécosystème

Mots-clés géographiques Agrovoc : Guadeloupe, France

Classification Agris : H10 - Ravageurs des plantes
F08 - Systèmes et modes de culture
F04 - Fertilisation
Q70 - Traitement des déchets agricoles

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Tabarant Perrine
• Villenave Cécile, IRD (FRA)
• Risède Jean-Michel, CIRAD-PERSYST-UPR Systèmes de culture bananes et ananas (FRA)
• Roger-Estrade Jean, AgroParisTech (FRA)
• Thuriès Laurent, CIRAD-PERSYST-UPR Recyclage et risque (REU) ORCID: 0000-0002-1365-7891
• Dorel Marc, CIRAD-PERSYST-UPR Systèmes de culture bananes et ananas (GLP)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/560973/)

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