1.
J. Bhattacharya, M. K. Mondal, E. Humphreys, M. H. Rashid,
P. L. C. Paul and S. P. Ritu

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.
Objectives
➢ feasibility of Rice-Rice-Rabi system
➢ can we fit 3 high yielding crops together?
➢ optimum sowing date for maximum
system productivity?

4.
Proposed cropping pattern

5.
Weed Management
Hand weeding – plots kept weed free
Disease and Insect Management
Recommended practice when needed

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.
Water Management

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.
Results

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.
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.
✓
✓