Efficacy of Different Insecticides against Thrips on Peas, Pisum Sativum (L.) in Vivo Condition

Abstract: The experiment on the efficacy of different insecticides against thrips, Caliothrips indicus on peas, Pisum sativum L. was conducted at the experimental field of Agriculture Research Institute, Tandojam, during November, 2011 to February, 2012. The experiment was designed in Randomized Complete Block Design (RCBD) with four treatments and three replications. The insecticides Radiant, Crown and Finvil were applied thrice at the interval of 15 and 21 days of second and third spray respectively. The results showed that all three insecticides performed well in reducing pest population. However, Radiant gave best results against pea thrips, Calothrip indicus. The overall mean population per leaf 7.33, 8.78 and 10.23 of Caliothrips indicus was recorded in the plots treated with Radiant, Crown and Finvil, respectively as compared to control plot (12.13 thrips per leaf) during the first spray. During second spray the overall mean population per leaf 7.04, 8.02 and 8.97 of thrip was recorded in the plots treated with Radiant, Crown and Finvil, respectively as compared to control plot (14.30 thrips per leaf). Whereas, during third spray the overall mean population per leaf 3.92, 5.06 and 6.13 of thrip was recorded in the plots treated with Radiant, Crown and Finvil, respectively as compared to control plot (14.62 thrips per leaf). All insecticides performed well up to 72 hours interval. ANOVA results showed significant difference between treatments and LSD test showed that efficacy of different insecticides remained non-significant at 24, 48 and 72 hours.