Combined use of zoophytophagous mirids for sustainable biological protection of greenhouse tomato crops

Konan Kouassi Arthur Jocelin, Jaworski Coline C., Monticelli Lucie S., Zuma Mnqobi, Boll Roger, Kouadio Marie-France N., Martin Thibaud, Gard Benjamin, Souriau Roselyne, Lavoir Anne-Violette, Desneux Nicolas. 2023. Combined use of zoophytophagous mirids for sustainable biological protection of greenhouse tomato crops. CABI Agriculture and Bioscience, 4:28, 12 p.

https://doi.org/10.1186/s43170-023-00170-6

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Résumé : Tuta absoluta and Bemisia tabaci are two key worldwide tomato pests. In response to chemical control limits, the use of zoophytophagous mirid predators as biocontrol agents is being increasingly studied and proposed for the management of these pests. However, the use of some mirid species and in particular Nesidiocoris tenuis, which naturally occurs in European tomato crops, is controversial due to its ability to inflict significant damage on tomato plants (necrotic rings) in parallel of its high predation capacity. Combining other mirid species such as Macrolophus pygmaeus and Dicyphus errans with N. tenuis could reduce the population growth of T. absoluta and of B. tabaci, while maintaining N. tenuis populations below a critical crop damage threshold. In this study, we tested the effect of combining N. tenuis with M. pygmaeus (at two densities: 10 and 15 individuals per plant) and with or without D. errans (five individuals per plant) on the abundance of all insects (predators and pests) for 8 weeks. We also measured leaf damage by T. absoluta and plant and flower damage (necrotic rings, flower abortion rate) by N. tenuis. We found that the combined presence of D. errans, M. pygmaeus and N. tenuis rapidly and significantly reduced the densities of B. tabaci adults, and T. absoluta larvae and damage compared to when M. pygmaeus (with both densities) was only present with N. tenuis. The presence of D. errans was critical to reduce N. tenuis population growth and necrotic rings on tomato plants, while higher densities of M. pygmaeus density reduced the rate of aborted flowers by N. tenuis. The manipulation of M. pygmaeus densities added to the presence of D. errans could provide a sustainable solution to control multiple pests simultaneously while reducing the damaging phytophagous activity of N. tenuis in tomato crops.

Mots-clés Agrovoc : lutte biologique contre les ravageurs, protection biologique des plantes, ravageur des plantes, lutte antiravageur, Nesidiocoris tenuis, Bemisia tabaci, Tuta absoluta, Solanum lycopersicum

Mots-clés complémentaires : Macrolophus pygmaeus, Dicyphus errans

Mots-clés libres : Bemisia tabaci, Biocontrol agents, Dicyphus errans, Macrolophus pygmaeus, Nesidiocoris tenuis, Tuta absoluta

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 européennes : European Commission

Agences de financement hors UE : Agence Française de Développement, Institut de Recherche pour le Développement, Compte d'affectation spécial Développement agricole et rural

Programme de financement européen : H2020

Projets sur financement : (FRA) Améliorer l’utilisation des punaises prédatrices et concevoir des pratiques Agroécologiques pour le COntrôle des Ravageurs aériens en cultures maraichères, (EU) EU-China joint action to increase development and adoption of IPM tools

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