Pheromones for the management of brinjal fruit and shoot borer, Leucinodes orbonalis Guenee

2009

E03872

To formulate a realistic sustainable management module for brinjal shoot and fruit borer (Leucinodes orbonalis) a field experiment was carried out during March to September 2006 at four villages near Sriniketan. The module with three components i.e. pheromone trap, timely mechanical control and application of azadex (neem based insecticides) was found most effective in reduction of shoot damage (76.59%) followed by the farmer's practice (i.e. twenty times application of insecticides) (76.36%). Whereas highest protection in fruit damage (48.26%) and yield increment (53.19%) were obtained from the practices of setting trap + timely mechanical control and trap + application of azadex, respectively. The module having all three components was found next best, which provided 45.91 per cent less fruit damage coupled with 52.29 per cent more production. Moreover, setting\n of only pheromone trap @ 75 numbers per hectare gave quite substantial protection in shoot damage (58.35%), fruit damage (33.73%) and yield (28.67%) while simultaneous use of trap + azadex afforded 71.72 and 39.06 per cent protection against shoot and fruit damage, respectively. Comparative study of different lures proved that NRI lure was significantly superior over PCI lure in respect of male moths trapped in every week as well as in total catch, but insignificant differences were found with Agriland and Ganesh lures. Efficacy of these two lure remained at par throughout the installation period but differed significantly from PCI lure in 2nd, 3rd week and in 2nd week, total catch respectively.

v.22(3-Spl. Issue):594-596, KARNATAKA JOURNAL OF AGRICULTURAL SCIENCES

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