INFLUENCE OF SOME PESTICIDES ON THREE VARIETIES OFHiruteila t»ompsonii Fisher (Hyphomycetes: ?loniliaies)Many authors have worked with the effects of entomopatho gerlic epizootics caused hy different pesticides. These agrochemicais can dirninish the epizootic interisity or delay their occurrence. Those pesticides having a significant effect on the behaviour of Hirsitlia th'.psoii Fisher varieties were analysed. Insecticides for three varieties of H. thompsonii in decreasing order of toxicity were: xnaiathion, chiorpyrifos, parathion and ou. Effects on conidiation of flirsuteila varieties froin least to most were: isoiatrs H. t. NC (8. t, var. vinacca -CBS 555.77), soate H. t. E (1. . var. synncmafo = CES 56.77A) and Ti (II. var. rnpsonii = ARSEr 2012). liowover, the order of reduction of myceiial growth from ieast to most affected was: II. t. E, H. t. NC and R. t. Ti. RESUME N Diversos autores han trabajado sobre ei efecto de diferentes piaguicidas sobre epizc.Dtias de entomopatõgenos. Estos agroquímicos pueden afectar la intensidad de ias epizootias Recebido em 30/07/87 1 Trabajo presentado en ei X Congresso Brasileiro de Entomologia.
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