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Chemical and Pesticides Uses Status in the Chalan Beel, Bangladesh and Present Status of Fish Biodiversity

Md. Abu Sayeed
Faculty of Fisheries, Syleht Agricultural University, Sylhet-3100, Bangladesh.

Sabuj Kanti Mazumder
Faculty of Fisheries, Syleht Agricultural University, Sylhet-3100, Bangladesh.

Simon Kumar Das
Institute of Tropical Aquaculture, University of Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia.

Mazlan Abd. Ghaffar
Department of Marine Science, School of Environment and Natural Resources Sciences, University Kebangsaan Malaysia, Bangi, Selangor, D. E. 43600, Malaysia.

Md. Tawheed Hasan
Faculty of Fisheries, Syleht Agricultural University, Sylhet-3100, Bangladesh.

Md. Abdul Wahab
Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Mostafa Ali Reza Hossain
Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

A study was conducted to investigate the status of agrochemicals used and its impact on aquatic biodiversity in the Chalan beel, the largest beel of Bangladesh. A period of six months from January to June 2009. The study was based on questionnaire survey. A semi structured and structured questionnaires were developed, pretested and adapted prior to the survey proper. The abundance of several fish species showed decreasing trend from 1982 to 2009. The average total annual fish production of the beel was 12017.57 MT having average fish production of 281.86 kg ha^-1 during the study period. Crop farmers applied 2.76 kg pesticide ha^-1 crop^-1 and average annual chemical fertilizers practiced was more than 125000 MT. A total of 108 and 143 large to minor scale fish mass mortality incidences were recorded with estimated fish damage of 2117 and 2980 kg respectively during the study period. It is the obligation of concerned GOs, NGOs and the people of Bangladesh to control the gear efficiency in the Chalan beel, stop the illegal usage of harmful pesticides and provide alternative livelihood options to the resource-poor fishers of the beel along with other measures for sustainability of the Chalan beel - a major fish reservoir of the country.

Keywords: Aman, Fertilizer, Total dissolve solids, Residual effect, Organic matter

Location: Chalan beel, Bangladesh

Start Date: 00-01-2009

End Date: 00-06-2009

Program Area: Conservation and Biodiversity

Commodity: Aquatic animal

Objectives:

To investigate the status of agrochemicals used and its impact on aquatic biodiversity in the Chalan beel, the largest beel of Bangladesh.

Methodology:

Description of the Study Area: The Chalan beel is situated between 24.35? and 24.70? North latitude and between 89.10? and 89.35? East longitudes. Historically the beel spreads over the upazilas (Sub-distrcts) of the districts of Rajshahi (Paba, Bagmara and Mohonpur), Pabna (Chatmohor, Bhangura and Faridpur), Sirajgong (Tarash, Ullapara, Raigonj and Shahjadpur), Natore (Sadar, Singra, Gurudaspur and Baraigram), Naogoan (Manda, Raninagar and Atrai) and Bogra (Nandigram). In present day, the beel has been squeezed only in the districts of Pabna, Sirajgonj and Natore due to crisscross roads, embankments and other infrastructural development. Therefore, the research was conducted in three representative cluster sites under the above districts. For data collection, ten upazilas such as Singra, Gurudaspur and Boraigram under the district of Natore, Chatmohar, Bhangura and Faridpur under Pabna and Shahjadpur, Ullapara, Tarash and Raygong under Sirajgong were included. Methodology: The study was based on questionnaire survey where primary data were collected both from the fishermen, crop farmers, pesticide dealers and retailers and other local stakeholders living in and around the beel. A reasonable size of sample to achieve the objectives of the study was considered keeping in view limitation of time and resources. A stratified random sampling procedure covering all selections among the people with an age of 25 years or more was followed to collect information on a participatory stakeholder approach. The study was based on the data collection from different stakeholders related to pesticides usage and detailed of them. Besides, ten Focus Group Discussions (FGD) were conducted in ten upazilas including all section of resource users and covering all aspects of pesticides. Secondary information from published reports (e.g., Bangladesh Crop Protection Association (BCPA), scientific articles, web sites etc. was also reviewed. Initially a draft questionnaire was prepared following other relevant questionnaire and information. Then it was pre-tested among 10 respondents from the beel area. New information and respondent’s attitude was recorded. Data Processing and Analysis: The data were generated and subjected to descriptive analyses to characterize the sample pesticide sellers and farmers’ crop management practices. The collected data were tabulated and analyzed in accordance with the objective of the study. The data were compiled and processed by using calculator, MS word and MS Excel computer program.

Source of Information: American Journal of Experimental Agriculture 6(5): 267-289, 2015, Article no. AJEA.2015.086

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It is the obligation of concerned GOs, NGOs and the people of Bangladesh to control the gear efficiency in the Chalan beel, stop the illegal usage of harmful pesticides and provide alternative livelihood options to the resource-poor fishers of the beel along with other measures for sustainability of the Chalan beel - a major fish reservoir of the country.

Knowledge Management: Journal