Abstract
Present study was made to evaluate the efficacy of certain new molecules against Diamond Back Moth (DBM). The data on population of DBM was taken as number of larvae from 10 plants selected at random from each plot. Pre-treatment count was taken 1 day before spraying which was followed by observations on pest incidence at 3rd, 5th and 7th days after spraying (DAS). The results revealed that highest (74.65% and 76.91% in 1st and 2nd years respectively) larval population reduction over control was found in Chlorfenapyr 10% SC @ 1000 ml/ha which was at par with the same chemical @ 750 ml/ha recording 72.46 and 74.44% reduction in 1st and 2nd years respectively. All the treatments were superior over untreated control in respect of yield. However the plots treated with Chlorfenapyr 10% SC @ 1000 ml/ha recorded highest yield (182.04 and 180.14 q/ha in 1st and 2nd years respectively) followed by the other chemicals.
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