Metarhizium carneum formulations: A promising new biological control to be incorporated in the integrated management of Meloidogyne enterolobii on tomato plants

Lopez-Lima Daniel, Alarcón-Utrera David, Ordáz-Meléndez José Angel, Villain Luc, Carrion Gloria. 2023. Metarhizium carneum formulations: A promising new biological control to be incorporated in the integrated management of Meloidogyne enterolobii on tomato plants. Plants, 12 (19), n.spéc. Management of the Root-Knot Nematodes:3431, 14 p.

Résumé : The increase in the populations of root-knot nematode Meloidogyne enterolobii in various vegetables such as tomatoes grown under greenhouse conditions as well as increasing restrictions on the use of certain chemical nematicides have led to the search for new, effective management strategies, preferably ones that are sustainable biological alternatives. In this work, two formulations of the nematophagous fungus Metarhizium carneum, one concentrated suspension and one wettable powder, were evaluated under greenhouse conditions to reduce the M. enterolobii infestation in tomato plants. In addition, the effectiveness of the liquid formulation of M. carneum was compared with two biological and three chemical commercial nematicides. The results show that the two M. carneum formulations reduced the M. enterolobii population density by 78 and 66% in relation to the control treatment. In comparison, the liquid formulation of M. carneum and Purpureocillium lilacinum treatments reduced nematode population density by 72 and 43%, respectively, while for metam sodium preplanting applications followed by M. carneum applications during the tomato growth stage, the reduction was 96%. The alternate use of some chemical compounds plus the application of M. carneum as a biocontrol is a good starting strategy for managing M. enterolobii populations. These results confirm that M. carneum is a serious candidate for the short-term commercialization of an environmentally friendly biological nematicide.

Mots-clés Agrovoc : Solanum lycopersicum, nématocide, lutte biologique, Metarhizium, formulation liquide, agent de lutte biologique, nématode des plantes, tomate, champignon nématophage

Mots-clés libres : Plant-parasitic nematodes, Meloidogyne enterolobii, Biological Control, Metarhizium carneum

Classification Agris : H01 - Protection des végétaux - Considérations générales
H10 - Ravageurs des plantes

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement hors UE : Consejo Nacional de Humanidades, Ciencias y Tecnologías

Projets sur financement : (MEX) Validation of the technological package for the integrated management of phytoparasitic nematodes and the disinfection of irrigation water for tomato crops under shade netting

Auteurs et affiliations

• Lopez-Lima Daniel, Universidad Veracruzana (MEX) - auteur correspondant
• Alarcón-Utrera David, Universidad Veracruzana (MEX)
• Ordáz-Meléndez José Angel, Universidad Veracruzana (MEX)
• Villain Luc, CIRAD-BIOS-UMR DIADE (FRA)
• Carrion Gloria, INECOL (MEX) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/606730/)

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