Effectiveness of biopesticides against oat aphid, Rhopalosiphum padi L.

Abstract

The present experiment was carried out on efficacy of microbial and botanical pesticides against aphid (Rhopalosiphum padi L.) and conducted during Rabi season of 2019-20 on Oat crop at the field of All India Coordinated Research Project on Forage Crops and Utilization at MPKV, Rahuri Dist-Ahmednagar, Maharashtra. Oats crops are heavily attacked by aphid. Three entomopathogenic fungi were tested for their efficacy at different concentrations and compared with neem based biopesticide, with a view to find out most effective treatment (s) against oat aphid. Among the biopesticide and their different concentration the treatment of Lecanicillium lecanii fb L. lecanii 2x108 cfu/gm @5gm/lit gave effective aphid control. Whereas L. lecanii fb M. anisopliae 2x108 cfu/gm @5gm/lit and M. anisopilae fb M. anisopilae 2x108 cfu/gm @5gm/lit next proved to be effective in controlling aphids.