Abstract

                                Among the Insecticides tried for the control of the chilll thrips, Scirtothrips dorsalls Hood, seven days after treatment under pot culture, monocrotophos was significantly superior to all other treatments with 95.07 per cent reduction followed by triazophos and carbosulfan with 87.98 and 87.52 per cent reduction respectively. Dichiorvos was the least effective among the treatments which gave 71.07 per cent roduction. Under field experimentation also monocrotophos registered 94.97 per cent roduollon, followed by phosalono, carbosulfan and triazophos with 89.81 85.92 and 84.64 per cent roduction respectively which were on par. The maximum yield was obtained in monocrotophos treatment followed by triazophos, phosalone, methyl-o- demeton and carbosulfan. However, the maximum cost-benefit ratio of 1:9.9 was given by methyl-o-demeton application followed by phosalone with 1:6.9 and monocrotophos with 1:6.1.

Key words : Chillies, Thrips, Insecticides