Economics and efficacy of some newer insecticides against linseed budfly Dasyneura lini Barnes in linseed under mid-western plain zone of UP.

摘要

Efficacy of eight insecticides viz, imidaclopride methyl-demeton, methyl parathion, phosolon, malathion, dimethoate, cypermethrine and fenvalvarate with their recommended dose were tested against linseed budfly (Dasyneura lini Barnes) under mid-western plain zone during rabi of 2006-07 and 2007-08. Imidaclopride with its recommended dose (600 ml/ha) was highly effective against budfly with highest grain yield and cost benefit ratio. Methyl-demeton with its recommended dose (750 ml/ha) was also recorded lower incidence with comparatively higher grain yield and cost benefit ratio, which was at par with the recommended dose of phosolon. Methyl parathion, malathion, dimethoate, cypermethrine and fenvalvarate (1,000, 800, 1000, 1,250, 750 and 750 ml respectively). Dimethoate, malathion phosolon and methyl parathion could not give effective control of budfly at their recommended doses.