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Survey and Assessment of Insect Management Technologies and Environmental Impact on Rice Ecosystem of Bangladesh

M. Z. Alam
Department of Bioenvironmental Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur-1706, Bangladesh

Abstract/ Executive Summary:

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.

Keywords: Insect, Ecosystem, Environment, Rice and Bangladesh

Location: Different district of Bangladesh

Start Date: 00-00-2011

End Date:

Program Area: Pest Management

Commodity: Insects, Rice

Objectives:

The present studies showed that insecticides were applied in maximum areas for management of insects in rice ecosystem. In this consequence, 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.

Methodology:

Description of survey area The survey and monitoring on insect management technologies in rice ecosystem and environmental impact assessment were completed at different district of Bangladesh in 2011.The present survey was considered 15 zones/areas based on insect management technologies for stem borer (SB) and brown plant hopper (BPH) in rice ecosystem and impact on environment. Use of farmer’s practices for insect management and impact on rice ecosystem are presented in Table 4. Data collection Data on insect management technologies regarding light trap, perching, irrigation insecticides application and impact in rice ecosystem had been recorded from different location in Bangladesh. Stem borer (Scirpophaga incertulas ) and brown plant hopper (Nilaparvata lugens) are the major rice insects in Bangladesh. Farmers have been using light trap, perching, irrigation and insecticides for controlling them in rice ecosystems. In the present survey, data on insect management technologies and impact in rice ecosystem were recorded by questionnaire from each location. Farmers of different areas were used of variable insect management technologies but some areas were not followed of same technologies. Randomly data were taken regarding used and non used technologies from each location. Finally, maximum adapted technologies were accepted as a used technology for each location.

Source of Information: International Journal of Applied Research and Studies (iJARS) ISSN: 2278-9480 Volume 2, Issue 4 (April- 2013)

Article Link (Online Journal): www.ijars.in

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Farmers are highly dependent on pesticides for management of insects in rice ecosystem in Bangladesh. The intensive uses of insecticides in rice field are caused for dissemination of toxicities which are directly responsible for reducing microbial communities, increasing health hazards, depletion of aquatic biodiversity, pest insurgence, secondary pest outbreak and disruption of natural enemies. So in this regard, an environmental friendly technique should be developed for insect management in rice ecosystem for protection of planet and durable environment. It is concluded that IPM is an ecosystem based pest management strategy that focuses on long-term prevention of pests and their damage through a combination of technology such as biological control, habitat manipulation, modification of cultural practices, and use of resistant cultivars. Pesticides should be used only when needed as determined by established guidelines.

Knowledge Management: Journal