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Toxicity of certain insecticides to spiders and Coccinellid beetles in the mango ecosystem

Author:

Rama Krishna Rao, A. and Indumathi, N.

Subject Area:

Life Sciences

Abstract:

A field experiment was done to evaluate the toxicity of certain insecticides with reference to number of sprays against predatory population of spiders and coccinellid beetles on mango. Azadirachtin (0.05%) was found to be safer to spider as well coccinellids i.e. Menochilus sexmaculatus and Coccinella septumpunctata. Endosulfan (0.07%) was relatively safe to coccinellid beetles followed by malathion (0.05%) and carbaryl (0.1%). Single spray was safe than two sprays and three sprays where as Cypermethrin (0.01%) showed distinct deleterious effect on spiders and coccinellid beetle population.

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