Article (Scientific journals)
Impact of insecticides on the efficacy of entomopathogenic nematodes against the diamondback moth plutella xylostella (L.) (lepidoptera: Plutellidae) on cabbage in northern benin
Sinhouenon, B. G.; Baimey, H.; Wauters, L. et al.
2019In Biotechnologie, Agronomie, Société et Environnement, 23 (4), p. 257-269
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Keywords :
Brassica oleracea; Integrated pest management; KARATE 2.5 WG; LAMBDA SUPER 2.5 EC; Neem oil
Abstract :
[en] Description of the subject. The article deals with the study of compatibility of entomopathogenic nematode (EPN) species with insecticides currently used against diamondback moth (DBM) Plutella xylostella (L.) in northern Benin Objectives. The aim of this work was to determine the impact of five insecticides on the efficacy of entomopathogenic nematodes against DBM larvae. Method. Infective juveniles (IJs) of two EPN species (Steinernema sp. 83a and Heterorhabditis sonorensis KF723827) were exposed to five insecticides used against P. xylostella larvae in Djougou for 48 h. The number of surviving nematodes was used to infest DBM larvae. The experiment was carried out under laboratory and semi-field conditions. Results. The bioassays carried out in laboratory showed that the survival rate of nematodes exposed to KARATE 2.5 WG, LAMBDA SUPER 2.5EC or neem oil ranges between 95% and 98%. In the treated plots, Steinernema sp. 83a was the most virulent with the highest P. xylostella mortality (87% at 50 IJs.cm-2 after 24 h) while only 35% larval mortality was recorded for H. sonorensis applied at the same dose. Population density of nematodes which penetrated DBM larvae reached 9 ± 3I IJs. larva-1 for H. sonorensis KF723827 and 6 ± 2 IJs.larva-1 for Steinernema sp. 83a. In cadaver of DBM, nematode reproduction did not appear to be affected by the contact with insecticides. Conclusions. Based on our research, we conclude that the three insecticides did not affect EPNs efficiency and could be used in combination against DBM. © 2019, FAC UNIV SCIENCES AGRONOMIQUES GEMBLOUX. All rights reserved.
Disciplines :
Agriculture & agronomy
Author, co-author :
Sinhouenon, B. G.;  University of Liege-Gembloux Agro-Bio Tech, Pesticide Science Laboratory, Passage des Déportés, 2, Gembloux, BE-5030, Belgium, Faculty of Agronomy, University of Parakou, Benin
Baimey, H.;  Faculty of Agronomy, University of Parakou, Benin
Wauters, L.;  University of Liege-Gembloux Agro-Bio Tech, Pesticide Science Laboratory, Passage des Déportés, 2, Gembloux, BE-5030, Belgium
Dossou, R.;  Faculty of Agronomy, University of Parakou, Benin
Ahissou, R. B.;  Faculty of Agronomy, University of Parakou, Benin
Decraemer, W.;  Ghent University, Department of Biology, K.L. Ledeganckstraat, 35, Ghent, BE-9000, Belgium
Schiffers, Bruno ;  Université de Liège - ULg
Language :
English
Title :
Impact of insecticides on the efficacy of entomopathogenic nematodes against the diamondback moth plutella xylostella (L.) (lepidoptera: Plutellidae) on cabbage in northern benin
Alternative titles :
[fr] Effet des insecticides sur l’efficacité des nématodes entomopathogènes contre les larves de la teigne des crucifères plutella xylostella (L.) (lepidoptera: plutellidae) sur le chou au nord bénin
Publication date :
2019
Journal title :
Biotechnologie, Agronomie, Société et Environnement
ISSN :
1370-6233
eISSN :
1780-4507
Publisher :
Presses Agronomiques de Gembloux, Gembloux, Belgium
Volume :
23
Issue :
4
Pages :
257-269
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 November 2020

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