Survival of Inoculum of the Entomopathogenic Fungus, Beauveria Bassiana, as Influenced by Fungicides

Document Type

Article

Journal/Book Title/Conference

Environmental Entomology

Volume

12

Issue

6

Publication Date

12-1-1983

First Page

1724

Last Page

1726

Abstract

Four fungicides used commercially for control of foliar diseases of potato were evaluated in Vitro and under field conditions for effects on survival of spores of Beauveria bassiana (Balsamo) a pathogen of the Colorado potato beetle, Leptinotarsa decemlineata (Say), (Coleoptera: Chrysomelidae). Mancozeb, the most detrimental of the fungicides, substantially reduced survival in both laboratory and field studies. Metiram was only slightly less inhibitory to B. bassiana than was mancozeb in vitro but was not different from the control under field conditions. Chlorothalonil and metalaxyl were not detrimental to spore survival under any of the conditions examined.

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