Plant Protect. Sci., 2010, 46(2):83-88 | DOI: 10.17221/35/2009-PPS

Effect of selected pesticides on the vitality and virulence of the entomopathogenicnematode Steinernema feltiae (Nematoda: Steinernematidae)

©těpánka Radová
Department of Plant Protection, Faculty of Agriculture, University of South Bohemia, České Budějovice, Czech Republic

The survival and infectivity of infective juveniles of the entomopathogenic nematode Steinernema feltiae (Rhabditida: Steinernematidae) were determined after being exposed to 8 insecticides (a.i. kinoprene, lufenuron, methomyl, metoxyfenozide, oxamyl, piperonyl-butoxide, pyriproxyfen, tebufenozide), 7 acaricides (a.i. azocyclotin, clofentezin, diafenthiuron, etoxazole, fenbutatinoxide, fenpyroximate, tebufenpyrad) and 4 fungicides (a.i. captan, fenhexamid, kresoxim-methyl, nuarimol) under laboratory conditions. S. feltiae was tolerant to all tested insecticides and fungicides, mortality during 72 hours varied from 2.26% to 18.68 % and from 7.04% to 8.86%, respectively. Acaricides with a.i. fenpyroximate and tebufenpyrad considerably influenced the S. feltiae ability to infect larvae of Tenebrio molitor. Tebufenpyrad caused 95% and fenpyroximate 85% reduction in S. feltiae virulence. These results suggest that S. feltiae can be applied in combination with all tested pesticides except the acaricides with a.i. tebufenpyrad and fenpyroximate.

Keywords: Steinernema feltiae; compatibility; integrated pest management; acaricides; insecticides; fungicides

Published: June 30, 2010  Show citation

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Radová ©. Effect of selected pesticides on the vitality and virulence of the entomopathogenicnematode Steinernema feltiae (Nematoda: Steinernematidae). Plant Protect. Sci. 2010;46(2):83-88. doi: 10.17221/35/2009-PPS.
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