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Rice-Rice-Rabi systems for low salinty regions of the coastal zone of Bangladesh

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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/

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

  1. 1. J. Bhattacharya, M. K. Mondal, E. Humphreys, M. H. Rashid, P. L. C. Paul and S. P. Ritu
  2. 2. 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
  3. 3. Objectives ➢ feasibility of Rice-Rice-Rabi system ➢ can we fit 3 high yielding crops together? ➢ optimum sowing date for maximum system productivity?
  4. 4. Proposed cropping pattern
  5. 5. Weed Management Hand weeding – plots kept weed free Disease and Insect Management Recommended practice when needed
  6. 6. 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
  7. 7. Water Management
  8. 8. 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
  9. 9. Results
  10. 10. ❑ 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
  11. 11. 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’
  12. 12. ✓ ✓

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