Rice-Rice-Rabi systems for low salinty regions of the coastal zone of Bangladesh
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By J. Bhattacharya, M.K. Mondal, E. Humphreys, M.H. Rashid, P.L.C. Paul, S.P. Ritu Revitalizing the Ganges Coastal Zone Conference 21-23 October 2014, Dhaka, Bangladesh http://waterandfood.org/ganges-conference/
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Rice-Rice-Rabi systems for low salinty regions of the coastal zone of Bangladesh
- 2. J. Bhattacharya, M. K. Mondal, E. Humphreys, M. H. Rashid, P. L. C. Paul and S. P. Ritu
- 3. Traditional Cropping System (Farmers’ Practice) Local Rice Varity (2-3 t/ha) Mungbean/Grass Pea (0.5-1.0 t/ha Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
- 4. Objectives ➢ feasibility of Rice-Rice-Rabi system ➢ can we fit 3 high yielding crops together? ➢ optimum sowing date for maximum system productivity?
- 8. Weed Management Hand weeding – plots kept weed free Disease and Insect Management Recommended practice when needed
- 10. BRRI & BARI , 2011 Rice- ¼ N + all fertilizers- Basal, MT, 5-7 dB PI Maize- 1/3 N + all fertilizer- Basal, 25-30, 45-50 DAS Sunflower- 1/3 N + all fertilizer-Basal, 20-25, 40-45 DAS
- 11. Water Management
- 12. Crop monitoring Rice Maize Sunflower Phenology & Biomass Mid tillering Panicle initiation (PI) Flowering Physiological maturity (PM) 8-9 L, tasselling-silking, mid-grain filling, PM 8-9 L, heading, seed development, PM Yield and yield contributing character Panicles/m2 Sterility % 1000 GW Cobs/plant, cob length, ear/cob, 1000 EW Head diameter, seed setting percentage, seeds/head, 1000 SW Grain yield Grain yield Cob yield Seed yield
- 19. Results
- 33. ❑ Duration of crops in field Sunflower- 305 d Maize 321 d Aus-aman-rabi is FEASIBLE where - able to drain & thus grow HYV aman - fresh water for irrigation of rabi crops
- 34. System production 14.1 to 19.5 t/ha/yr (3-4 times than A M J J A S O N D J F M A Sunflower/Maize farmers’
- 35. ✓ ✓