C. S. Patil ¹, S. Lingappa ¹

Affiliations
1 Department of Agricultural Entomology University of Agricultural Sciences Dharwad 580005, Karnataka, IN

Abstract

Studies were conducted to assess toxicity of promising insecticides against tobacco aphid, M. nicotianae and its predator, C. Sexmaculata during 1995 at the Agricultural Research Station, Nipani (Karnataka). The selectivity ratio of M. nicotianae and C. sexmaculata grubs and adults was lowest for acepbate followed by imidacloprid and oxydemeton methyl. However, endosulfan registered highest selectivity ratio and it could be used for aphid control along with the coccinellids in an integrated approach.

Keywords

Insecticides, Cheilomenes sexmaculata, Myzus nicotianae, Selectivity.

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C. S. Patil ¹, S. Lingappa ²

Affiliations
1 Department of Entomology, MPKV, Rahuri, Maharashtra, IN
2 Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad 580 005, Karnataka, IN

Abstract

Persistent toxicity of insecticides to Cheilomenes sexmaculata (Fabricius) was studied during 1994-95. Acephate, imidacloprid and carbosulfan exhibited considerable indirect toxic effect on the population of C. sexmaculata. However, oxydemeton methyl was relatively safe to C. sexmaculata.

Keywords

Cheilomenes sexmaculata, Insecticides, Myzus nicotianae, Persistent Toxicity.

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