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