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Improved Production System in the Polders of Bangladesh through Community Water Management

25 de Feb de 2019
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Improved Production System in the Polders of Bangladesh through Community Water Management

  1. ACKNOWLEDGEMENTS This poster is made possible by the support of the American People provided to the Feed the Future Innovation Lab for Sustainable Intensification through the United States Agency for International Development (USAID). The contents are the sole responsibility of the authors and do not necessarily reflect the views of USAID or the United States Government. Program activities are funded by USAID under Cooperative Agreement No.AID-OAA-L-14-00006. Improved Production System in the Polders of Bangladesh through Community Water Management Manoranjan Mondal, SudhirYadav, S.V. Krishna Jagadish and Sirajul Islam INTRODUCTION CONCLUSIONS • The people of coastal zone of Bangladesh are some of the world’s poorest, most food-insecure and vulnerable. Most of the cultivable lands are used to grow local landraces of rice during the rainy season, followed a fallow season or a low input and low yielding dry season crops. However, these crops are often damaged/destroyed by pre-monsoon rains and cyclones in May prior to maturity. • Coastal hydrology is mainly governed by the lunar cycle. It is practically impossible for individuals to manage these huge water resources for production system. • Improved production systems, having 2-3 times higher productivity than current farmers’ practice, can be adopted when the farming communities are organized on the basis of hydrological units within the catchment area of a regulator/sluice gate installed in the polder embankment. SYNERGIES ANDTRADEOFFS • Despite tremendous efforts from different organizations, there has been little change in production practices in the polders mainly because of prevailing hydrology that has not been recognized as the key determinant for the adoption of improved production systems in the polder ecosystem by the policy makers, water management and agricultural extension professionals, and the millions of farming families living inside the polders of the coastal zone. • The key to cropping intensification in the polder ecosystem are o Community coordination on water management o Shortening the duration of rainy season rice by introducing high yielding varieties o Intensifying the system with early establishment of high value dry season crops Domains Traditional cropping system Improved cropping systems Productivity • Low productivity leads to food insecurity and vulnerable livelihood. • Traditional aman rice experiences more climatic hazards due to longer crop duration. • Large area under traditional system therefore limited problem of bird and rats. • All proposed systems with HYVs gives higher productivity sustaining food security, however, with a tradeoff of high variability in productivity. • HYVs of rice are climate resilient and can tolerate submergence for 2-3 weeks • Bird and rats attack due to limited planted area Economics • Gross margin is quite stable in the traditional system. • High gross margin with high variability in improves system • Maximum gross margin in HYV rice- HYV maize. • The gross margin of other improved system was less due to crop damage by climatic hazard Domains Traditional cropping system Improved cropping systems Environment • Low/no pesticide and fertilizer use • High pesticide and fertilizer use • High chances of pest outbreak Human conditions • Traditional system with mungbean can give similar protein to improved system with sunflower • The energy output is less • Intensive system with rice and maize give maximum protein and energy Social • Traditional system not much dependent on social cohesion or collective action • Strong dependence on social cohesion and collective action for tidal water management Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May HYV rice Traditional system Improved system Traditional rice Fallow Mungbean Mungbean Sunflower Maize Traditional rice HYV rice HYV rice The improved production system in coastal zone of Bangladesh; a) study sites in polder 30 b) community engagement in polder water management c) current vs improved cropping pattern and d) demonstration of dry season crops . a) b d) c) System yield (kg/ha/year) min=0 max=14605 Variability in production (kg/ha/year) min=0 max=1487 Profitability ($/ha/year) min=0 max=2866 Variability in profitability ($/ha/year) min=0 max=461 Pesticide use (a.i/ha/year) min=0 max=1178 Fertilizer use (kg N/ha/year) min=0 max=322 Nutrition (kg/ha/year) min=0 max=974 Food security (kcal/ha/year) min=0 max=40726 Social cohesion (number) min=0 max=8 Collective action (number) min=0 max=8 Traditional rice-Fallow Traditional rice- Traditional Mungbean HYV rice- HYV mungbean HYV rice- HYV sunflower HYV rice- HYV maize Comparison of traditional and improved production systems in polder ecosystem across all five domains .
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