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SOME STUDIES ON THE USE OF Metarhizium anisopliae (METSCH.) SOR. FOR THE CONTROL OF Oryctes rhinoceros IN SRI LANKA

Authors:

L.C.P. FERNANDO ,

COCOS, LK
About L.C.P.
Coconut Research Institute of Sri Lanka
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P. Kanagaratnam,

About P.
Coconut Research Institute of Sri Lanka.
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N. K. Narangoda

About N. K.
Coconut Research Institute of Sri Lanka.
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Abstract

Black beetle, Oryctes rhinoceros L. larvae and adults were inoculated in the
laboratory with three isolates of the fungus, Metarhizium anisopliae (Metsch.) Sor, to
screen their virulence against black beetle. All the isolates caused 100% mortality of
larvae and adults when treated with suspensions of 107 conidia/ml. Comparatively the
local isolate caused a slow death rate in larvae and adults than the other isolates. Fifty
grams of the maize inoculum per 0.008 m2 of breeding medium were sufficient to cause
100% death rate in larvae. In the field, the fungus was capable of disseminating at least
10 m and the impregnation boxes (infection foci) were attractive to black beetle. It is
suggested that M. anisopliae could be used as an effective bio-control agent in the
integrated management of black beetle.
How to Cite: FERNANDO, L.C.P., Kanagaratnam, P. & Narangoda, N.K., (2010). SOME STUDIES ON THE USE OF Metarhizium anisopliae (METSCH.) SOR. FOR THE CONTROL OF Oryctes rhinoceros IN SRI LANKA. COCOS. 10, pp.47–53. DOI: http://doi.org/10.4038/cocos.v10i0.2137
Published on 28 Jul 2010.
Peer Reviewed

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