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Studies on the biosafety of botanical insecticides to native natural enemies of mulberry ecosystem

S. K. Mukhopadhyay and M. V. Santha Kumar

Entomology Laboratory, Central Sericultural Research & Training Institute, Berhampore -742 101, West Bengal, India
E-mail:swapan_man@yahoo.co.in

ABSTRACT

Laboratory studies were made to compare the toxicity of botanical insecticides viz. Neem oil, Pongamia oil and Nicotine extract in different conc./combinations along with dimethoate and dichlorvos on four coccinellid bio-control agents (Micraspis crocea, Micraspis discolor, Brumus suturalis and Scymnus bourdilloni ). All botanicals tested showed least mortality and was on par with unsprayed control. Dimethoate (0.1%) was highly toxic causing 100% mortality. Whereas, dichlorvos (0.1%) was least toxic in comparison to dimethoate. Botanical insecticides tested in different conc./combinations are compatible with natural enemies and may be incorporated in IPM in mulberry ecosystem.

 

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The Journal of Plant Protection Sciences

December

Vol. 7, Iss. 1-2, Pages 1-18

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