The survey and assessment were carried out at different districts of Bangladesh on insect management technologies and environmental impact in rice ecosystem in 2011. Farmers usually practiced perching and insecticides application for management of brown plant hopper (Nilaparvata lugens) and stem borer ( Scirpophaga incertulas ) insects in rice ecosystem. Light trap, perching and insecticides were covered 33, 40 and 66% of total surveyed area for management of brown plant hopper (BPH), respectively. On the other hand, 26, 66 and 80% of total surveyed areas were followed of light trap, perching and insecticides for controlling of stem borer insect, respectively. Irrigation was not applied for control of both insects. In the present studies showed that insecticides were applied in maximum areas for management of insects in rice ecosystem. In this case, negative environmental impact might be developed like disruption of beneficial microbes, pest resurgence and destruction of natural enemies in rice ecosystem due to unconscious application of insecticides. So, continuous research on pesticides application in rice ecosystem is important for assessment of environmental impact in Bangladesh.
Indian Member 40.00
Others Member 3.00