Effects of organic amendments on plant-parasitic nematode populations, root damage, and banana plant growth

Tabarant Perrine, Villenave Cécile, Risède Jean-Michel, Roger-Estrade Jean, Dorel Marc. 2011. Effects of organic amendments on plant-parasitic nematode populations, root damage, and banana plant growth. Biology and Fertility of Soils, 47 (3) : 341-347.

Quartile : Q1, Sujet : SOIL SCIENCE

Résumé : Nematodes are major pests for crops, including banana. Environmentally friendly methods for managing plant-parasitic nematodes have to be developed, such as organic material application. Our study focuses on the impacts of several organic amendments on banana plants, considering mainly their effect on soil nitrogen supply and soil microbial biomass, and the consequences on plantparasitic nematode impacts on the plants. A microcosm experiment for 13 weeks was conducted to evaluate four organic materials: sugarcane bagasse, sugarcane sludge, plant residues, and sewage sludge, compared to a control without organic amendment. Input of organic materials led to an important change on nitrogen resource, and plants grew better when the N availability was the highest, but better growth conditions did not necessarily reduce parasitic nematodes impacts on the roots. Damage on the roots depended on plant-parasitic nematode abundance. Three of four tested amendments exhibited a regulator effect on plant-parasitic nematode populations (bagasse, sugarcane sludge, and plant residues). Root growth was not the explanatory factor for this regulation. Only sugarcane sludge led to an overall positive effect on the plant, increasing its growth and reducing its parasitism pressure. The other organic materials exhibited an antagonism between the promoted plant growth and the reduced nematode populations.

Mots-clés Agrovoc : Musa, bagasse, déchet organique, boue d'épuration, amendement organique, lutte biologique, Nematoda

Mots-clés géographiques Agrovoc : Guadeloupe, France

Classification Agris : H10 - Ravageurs des plantes
F62 - Physiologie végétale - Croissance et développement
F04 - Fertilisation

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)
• Dorel Marc, CIRAD-PERSYST-UPR Systèmes de culture bananes et ananas (GLP)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/559706/)

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