Toxicity of imidacloprid to Myzus persicae and the predatory bugs Orius laevigatus and Macrolophus caliginosus
1999
Vantornhout, I. | Veire, M. van de | Tirry, L. (Gent Univ. (Belgium). Faculty of Agricultural and Applied Biological Sciences. Lab. of Agrozoology)
The toxicity of imidacloprid to Myzus persicae, Orius laevigatus and Macrolophus caliginosus was investigated in the laboratory. Nymphs (N1 and N2) and adults of the predatory bugs and apterous stages (a mixture of adults and nymphs) of the aphid were exposed to sweet and sharp pepper plants to which imidacloprid had been systemically applied via drench application and via a hydroponic system. Imidacloprid could eradicate M. persicae at a dosage harmless to the predatory bugs. At the lowest concentration tested (0.5 mg Active Ingredient per plant applied via drench application) the compound remained toxic to the aphids for at least 8 weeks. The number of offspring from females originating from nymphs that survived a drench application of 0.5, 1, 2 and 10 mg AI per plant did not differ significantly from the control. These tests indicate that the use of certain dosages of imidacloprid applied via drench application in an integrated pest management programme might be compatible with the biological control of western flower thrips with Orius laevigatus and the control of the greenhouse whitefly with Macrolophus caliginosus.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par University of Liège
Découvrez la collection de ce fournisseur de données dans AGRIS