Science Forum Day 3 - Zainul Abedin - Integrating fish in rice-based farming systems in Bangladesh

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Science Forum Day 3 - Zainul Abedin - Integrating fish in rice-based farming systems in Bangladesh

  1. 1. Integrating fish in rice-based farming systems in Bangladesh<br />M. Zainul Abedin and S.M.A. Sattar<br />IRRI Bangladesh Office<br />July 2011<br />
  2. 2.
  3. 3. Rice and Fish had been and are integrated<br />on the plates<br />and<br />In the rice fields …. Since ????<br />
  4. 4. Plankton growth<br />INTEGRATED <br />RICE+FISH – PULSES+LIVESTOCK<br />SYSTEM<br />
  5. 5. Natural rice-fish culture<br />Is Threatened by:<br /><ul><li>High population pressure – demand for more - over harvesting -Decreasing stocks of natural (wild) fish
  6. 6. “Green revolution and “development” initiatives saw
  7. 7. changing land use patterns
  8. 8. indiscriminate use of pesticides
  9. 9. interference with natural breeding and feeding grounds – sluices, roads, etc.
  10. 10. Drying up river systems and water bodies
  11. 11. LACK OF TECHNOLOGIES TO COPE UP WITH THE CHANGING CIRCUMSTANCES AND INCREASING DEMANDS</li></li></ul><li>? Where is FISH???<br />
  12. 12. Research and development of rice fish culture in Bangladesh<br />Organizations involved:<br />BFRI, BRRI, Universities, Deptt. of Fisheries NGOS, WFC, IRRI<br />CONCURRENT AND SEQUENTIAL RICE AND FISH BASED FARMING SYSTEMS<br />
  13. 13. Improved rice (aman)-shrimp system<br /> Wet season<br /> Dry season<br />Gher preparation<br />Bagda<br />Rice<br />Seedling<br />Golda<br />GIFT<br /><ul><li>Water depth- 60-80 cm
  14. 14. Single stocking: @ 3-5/m²
  15. 15. Yield: 350-550 kg/ha
  16. 16. NR: 0.75-1.00 lakh/ha</li></ul> (1:1.9)<br />HYVs: BR 23/40/41<br />5,000-10,000/ha <br />at 1:1 ratio<br />Yield:<br /><ul><li>Rice: 4-5 t/ha.
  17. 17. Fish: 200-250 kg/ha
  18. 18. Prawn: 70-90 kg/ha</li></li></ul><li>Results (economic return<br />Stocking of prawn PL into shrimp ponds 60 days in advance of rice plantation resulted in 158% higher net return<br />15,690<br />Control<br />About 369-584% higher return than in mono-cultivation of commonly practiced rice varieties <br />
  19. 19. Benefits of integrating fish with deep water rice<br />Data from BFRI<br />
  20. 20. Benefits of integrating fish with rice<br />67% fields with fish gave 13% higher rice yield<br />82% fields with fish had less weed <br />Evidence of reduced pests in rice<br />Evidence of increased soil organic matter content<br />Reduced need for fertilizer in rice<br />
  21. 21. Potential in Bangladesh<br />Fish in rice-based ag system can enhance income at a higher rate than crops alone can<br />thereby can reduce poverty, malnutrition and vulnerability<br /><ul><li> Generate employment opportunities</li></ul>Total rice area about 10.8 m ha<br />About 7 m ha where water stays for 4-6 months<br /><ul><li>~ 3 m ha boro fields
  22. 22. ~ 1.40 m ha floating rice fields
  23. 23. ~ 3 m ha t. amanfields (including coastal area</li></li></ul><li>Constraints<br />Technological<br /><ul><li>Limited technological options for various ecosystems, resource base and risks
  24. 24. Pests & diseases
  25. 25. Lack of technical knowledge</li></ul>Institutional and governance<br /><ul><li>No easy access to seed & other inputs
  26. 26. Inadequate service centers
  27. 27. Inadequate training facility
  28. 28. Indiscriminate structures disregarding impact on fisheries
  29. 29. Tenurial rights</li></li></ul><li>Constraints<br />Socioeconomic<br /><ul><li>Labor shortages
  30. 30. Lack access to capital
  31. 31. Risk of fish protection
  32. 32. Lack of Access to Market</li></ul>Environmental<br />Flooding, Drought, and impact of climate change<br />
  33. 33. Recommendations<br />Look at system productivity and economic gains<br />Strengthen understanding of the current conditions and long term projections<br />Strengthen research and development – community participatory<br />Develop Community-based entrepreneurships <br />Build up on successes and local knowledge<br />Lobby for Policy tools for governance – equity, access to factor and product markets, tenurial rights particularly for fishing in large water bodies<br />
  34. 34. THANKS<br />

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