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G2 - Productive, profitable, resilient
agriculture & aquaculture systems
1
2
Take home messages
1. Tremendous potential to greatly increase productivity, nutritive
value, profitability & resilience of production systems in the
polders
• agricultural systems (rice & non-rice)
• aquacultural systems
• rice-aquaculture systems
• homestead production systems
2. To unlock this potential need to invest in
• improved water mgt
• with special emphasis on drainage mgt (the entry point)
and infrastructure inside the polders
3. Community co-ordination is critical to achieving this – needs
community ownership & to be community-driven
West Bengal, India
SW& SC Bangladesh
Patuakhali STU
Polder 43/2/F
Polder 30
Polder 3
North 24 Parganas
South 24 Parganas
Andy Nelson
“LOW SALINITY” (L)
•Water “stagnation” 30-50 cm
weeks to months in aman
•River water fresh year-round
•Mild soil salinity in dry season
“MEDIUM SALINITY” (M)
•Water “stagnation” 30-50 cm
weeks to months in aman
•River water saline mid-Feb-Jun
•Medium soil salinity in dry
season
“HIGH SALINITY” (H)
•Water “stagnation” 30-50 cm
weeks to months in aman
•River water saline Dec-Jul
•High soil salinity in dry
season
3
Objectives (6)
1. Rice variety evaluation
• aus (early rainy season) – low (L), medium (M) salinity
• aman (main rainy season) - L, M, high (H) salinity
• boro (dry season) - L, M
2. Rice-based cropping system intensification
• Rice-rice-rice L rice-rice M
• Rice-rice-rabi L rice-rabi M
• Rice+fish - brackish water aquaculture H
3. Homestead production systems – L, M, H
• Analysis - literature review & surveys
• Improving productivity of homestead systems/empowering
women
4. Brackish water aquaculture systems - H
• Evaluation of improved management options
5. Technology & policy recommendations
6. Pilot community water management – CPWF Innovation Grant 4
CPWF
Innovation
Project
5
Jahangir
Alam
SocioConsult
6
7
8
Liz 1. Improving rice–based agricultural cropping
systems
Saha
Ashutosh
2. Improving rice-aquaculture & aquaculture only
systems
Manjurul 3. Homestead production systems
- cross-country comparison
Kabir - women-led participatory action research
Today’s presentation
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug
Traditional Rice
2-3.5 t/ha
Predominant agricultural cropping systems in the
low & moderately saline regions of the coastal zone of Bangladesh
..................Fallow…………………........ Low
Med
~40%
• Traditional variety
• Tall, photoperiod sensitive (late maturing – harvested Dec/Jan)
• 35-70 day old seedlings 9
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug
Traditional Rice
2-3.5 t/ha
Traditional Rice
2-3.5 t/ha
Sesame
0-1 t/haTraditional Rice
2-3.5 t/ha
Predominant agricultural cropping systems in the
low & moderately saline regions of the coastal zone of Bangladesh
Khesari
0.2-1 t/ha ............Fallow…………….
…..Fallow.... ....……........
..................Fallow…………………........ Low
Med
Med
Low
~40%
10
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug
Traditional Rice
2-3.5 t/ha
Traditional Rice
2-3.5 t/ha
Sesame
0-1 t/haTraditional Rice
2-3.5 t/ha
Predominant agricultural cropping systems in the
low & moderately saline regions of the coastal zone of Bangladesh
Khesari
0.2-1 t/ha ............Fallow…………….
…..Fallow.... ....……........
..................Fallow…………………........ Low
Med
Med
Low
~40%
Traditional Rice
2-3.5 t/ha
Aus
3-4 t/ha............Fallow……………...
Low
11
12
For high rice yield & cropping system intensification
in polders we need rice varieties with…..
1. High yield potential
2. Tolerance to stresses, especially
• water stagnation (30-50 cm, week...months)
• salinity
• submergence after transplanting
• singly and in combination
3. Early maturity (for system intensification)
4. Preferred grain quality
13
Rice variety evaluation in farmers’ fields
Tolerance to water
stagnation for aman
essential throughout coastal
zone
This crop experienced deep
water (up to 44 cm) for
several weeks (4.6 t/ha)
14
BRRI dhan54
Amal-Mana ~4 t/ha
(Water stagnation tolerant)
Sabita <2 t/ha
15
Submergence tolerance needed for aman (& aus)
(example in a shrimp-rice gher)
2nd transplanting submerged for 1 week shortly after
transplanting – BRRI dhan52 (BR11-Sub1)
16
3rd transplanting NOT submerged
Sabita <2 t/ha
Swarna sub1, 3.5 t/ha
17
Salinity tolerance needed for aman in high salinity areas
(& for aus)
- especially for aman in ghers used for brackish water shrimp in the dry
season
18
BRRI dhan47 in gher
3.6 t/ha
BRRI dhan28
BRRI dhan61
3.8 t/ha
BRRI dhan28
BRRI dhan47 4 t/ha
Parijat <1 t/ha
19
With improved varieties &
intensification we have
achieved the following
…..on-farm…..in the polders
Boro (140-145 d)T. Aman (130-140 d)Aus (100-105 d)
20
Cropping system intensification for low salinity areas
1. Aus-aman-boro (15-17 t/ha)
HYV
Short duration
Salt tolerant
HYV
Medium duration
Water stagnation tolerant
HYV
Medium duration
“Early” sowing
Successfully implemented on-farm for 3 years – 8th crop – polder 43/2F
A M J J A S O N D J F M A
Rabi (110-140 d)
T. Aman (130-140 d)Aus (100-105 d)
A M J J A S O N D J F M A
21
Cropping system intensification for low salinity areas
2. Aus-aman-rabi (9-10 t/ha rice+9 t/ha maize OR 3.5 t/ha sunflower etc)
HYV
Short duration
Salt tolerant
HYV
Medium duration
Water stagnation tolerant
HYV
Maize
Sunflower,
Water melon
Chilli etc.
Successfully implemented on-farm for 3 years – 8th crop – polder 43/2F
Boro (140-145 d)T. Aman (130-140 d)
22
Cropping system intensification for medium salinity/water short areas
1. Aman-boro (~10 t/ha)
HYV
Medium duration
Water stagnation tolerant
HYV
“Early” sowing
Medium duration
Successfully implemented on-farm for 3 years, 6th crop – polder 30
A M J J A S O N D J F M A
Rabi (110-140 d)T. Aman (130-140 d)
A M J J A S O N D J F M A
23
Cropping system intensification for medium salinity areas
2. Aman-rabi (~4.5 t/ha rice + ~5 t/ha maize, 1.5 t/ha sunflower)
HYV
Maize
Sunflower
Sesame
Implemented on-farm for 2 years, 4th crop –
polder 30 – but NOT to potential;
Community water management, cropping
system synchronisation, adoption challenges
24
With improved varieties & cropping system intensification,
productivity can be increased 2 to several-fold
Widespread implementation requires
improved water management
Water mgt ingredients for a Green Revolution in the Polders
1. Separation of lands of higher & lower
elevation (mini-water mgt units)
Prevent accumulation of drainage in
lowlands – enable rainy season HYVrice
25
River
Sluice
gate
Drainage
outlet
Road
Rural
road
Canal
(khal)
Drainage
canal
6 ha pilot water management unit on polder 30
26
0
20
40
60
80
100
120
140
160
180
200
220
240
Rainfall&Waterdepth(mm)
Transplanting
~250 mm rain after transplanting
– need to drain to save the HYV rice
27
28
Water mgt ingredients for a Green Revolution in the Polders
1. Separation of lands of higher & lower
elevation (mini-water mgt units)
Prevent accumulation of drainage in
lowlands – enable rainy season HYVrice
2. Strategic drainage during the rainy
season
Enables cultivation of HYV & thus
earlier harvest (mid-Nov)
29
Water mgt ingredients for a Green Revolution in the Polders
1. Separation of lands of higher & lower
elevation (mini-water mgt units)
Prevent accumulation of drainage in
lowlands – enable rainy season HYVrice
2. Strategic drainage during the rainy
season
Enables cultivation of HYV & earlier
harvest (mid-Nov)
3. Drainage shortly before aman harvest
(early Nov)
Enables soil to dry for early (timely)
establishment of rabi crops
30
Sesame
Mungbean
The consequences of late rabi crop establishment
– low yields or complete failure due to early kharif rains
- high yield, high value crops out of the question (e.g. sunflower, maize)
AFTER RICE HARVEST – some areas
Low input crops – late sown (Feb/Mar) because of late rice harvest
31
Water mgt ingredients for a Green Revolution in the Polders
1. Separation of lands of higher & lower
elevation (mini-water mgt units)
Prevent accumulation of drainage in
lowlands – enable rainy season HYVrice
2. Strategic drainage during the rainy
season
Enables cultivation of HYV & earlier
harvest (mid-Nov)
3. Drainage shortly before aman harvest
(early Nov)
Enables soil to dry for early (timely)
establishment of rabi crops
4. Make use of available fresh water for
irrigation during the dry season
In some areas lots of fresh water in the
rivers almost year-round - untapped
32
0.00
4.00
8.00
12.00
16.00
7-Apr-11
6-Jun-11
-Aug-11
4-Oct-11
-Dec-11
-Feb-12
1-Apr-12
0-Jun-12
-Aug-12
8-Oct-12
-Dec-12
-Feb-13
6-Apr-13
5-Jun-13
-Aug-13
Salinity(ppt)
Polder 30 (Station-2, Pussur river)
0.0
4.0
8.0
12.0
16.0
20.0
24.0
26-Feb
6-Jun
14-Sep
23-Dec
1-Apr
10-Jul
18-Oct
26-Jan
6-May
14-Aug
22-Nov
2-Mar
Salinity(ppt)
Date
Polder 43-2f (Station-2 (Out Side),Paira River)
IWM
Water mgt ingredients for a Green Revolution in the Polders
1. Separation of lands of higher & lower
elevation (mini-water mgt units)
Prevent accumulation of drainage in
lowlands – enable rainy season HYVrice
2. Strategic drainage during the rainy
season
Enables cultivation of HYV & earlier
harvest (mid-Nov)
3. Drainage shortly before aman harvest
(early Nov)
Enables soil to dry for early (timely)
establishment of rabi crops
4. Make use of available fresh water for
irrigation during the dry season
In some areas lots of fresh water in the
rivers almost year-round - untapped
5. De-silting of khals ..Increases storage capacity for irrigation
when river too saline
..Facilitates drainage
33
Khals within polders vary greatly in size, can store fresh water during the dry
season, but often heavily silted up (some no longer exist), blocked…
34
Water mgt ingredients for a Green Revolution in the Polders
1. Separation of lands of higher & lower
elevation (mini-water mgt units)
Prevent accumulation of drainage in
lowlands – enable rainy season HYVrice
2. Strategic drainage during the rainy
season
Enables cultivation of HYV & earlier
harvest (mid-Nov)
3. Drainage shortly before aman harvest
(early Nov)
Enables soil to dry for early (timely)
establishment of rabi crops
4. Make use of available fresh water for
irrigation during the dry season
In some areas lots of fresh water in the
rivers almost year-round - untapped
5. De-silting of khals ..Increases storage capacity for irrigation
when river too saline
..Facilitates drainage
6. “Early” establishment of boro rice
after aman
(sow mid-Nov)
Reduces storage requirement for fresh
water to finish the crop off after the
rivers become too saline
35
Polder 30 - sufficient storage for 15-20% of land to grow boro rice
- desilting of khals  roughly double the possible boro rice area
Water mgt ingredients for a Green Revolution in the Polders
1. Separation of lands of higher & lower
elevation (mini-water mgt units)
Prevent accumulation of drainage in
lowlands – enable rainy season HYVrice
2. Strategic drainage during the rainy
season
Enables cultivation of HYV & earlier
harvest (mid-Nov)
3. Drainage shortly before aman harvest
(early Nov)
Enables soil to dry for early (timely)
establishment of rabi crops
4. Make use of available fresh water for
irrigation during the dry season
In some areas lots of fresh water in the
rivers almost year-round - untapped
5. De-silting of khals
(CPWF phase 1)
..Increases storage capacity for irrigation
when river too saline
..Facilitates drainage
6. “Early” establishment of boro rice after
aman
(sow mid-Nov – CPWF phase 1)
Reduces storage requirement for fresh
water to finish the crop off after the
rivers become too saline
7. High yielding/value rabi crops in the
dry season, espec. in water short areas
Only need 2-3 irrigations
36
37
Productive, Profitable, Resilient and
Diversified Aquaculture Systems in
High Salinity Areas
38
BANGLADESH
Aquaculture: Salinity fluctuates from
high in dry season to medium in
rainy season
Aquaculture-rice: Salinity fluctuates from
high in dry season to low in rainy season
39
Research Objective
Improved management for enhanced productivity, profitability &
resilience in aquaculture-rice & aquaculture only systems
24 mini-ghers for aquaculture-rice 12 mini-ghers for aquaculture only
407-870 m2
866-1463 m2
Trenches for fish refuge
when water shallow for
rice establishment
40
41
Before
Construction
Drain/Intake canal
Around every gher
42
Satellite images of the pond complexes
Aquaculture-rice Aquaculture only
Aquaculture treatments (4 reps)
Treatments
Culture
patterns
2012 2013
Cycle 1 Cycle 2
Cycle 3
(+rice)
Cycle 1 Cycle 2
Cycle 3
(+rice)
Farmer’s
practice
Poly
Shrimp + different sp of fish
(multiple stocking &
harvesting)
Shrimp + different sp of fish
(multiple stocking &
harvesting)
Improved
practice 1
Mono Shrimp Tilapia
Prawn
Prawn
Shrimp Shrimp
Tengra
………………
Tilapia
Improved
practice 2 Poly
Shrimp
Tilapia
Tilapia
Tengra
Prawn
Singh
Prawn
Singh
Shrimp
Tilapia
Shrimp
Tilapia
Tilapia
Tengra
………………
Rohu
Singh
Magur
Managed by farmers
43
Managedbyresearchers
Management
Practice Farmer’s Practice Improved 1 & 2
Liming 200 kg ha-1 200 kg ha-1
Water filtering Unfiltered Filtered
Predatory Fish Not eradicated Eradicated
Disinfection No disinfection Disinfected
Fertilization No fertilizer Fertilizer & dolomite
Shrimp seed Not PCR tested PCR tested
Feed No feed Feeding
Water replenishment When needed When needed
Post stocking fertilization Very insufficient When primary
production is low
Fish seed Some wild All from hatcheries
44
Timeline
Shrimp
& fish
Stocking 1
Harvest 3
AprilMarch Aug. Dec.
Harvest 2
Sept.
Stocking 3 &
rice
transplanting
Harvest 1 &
Stocking 2
June July Nov.May Oct.
Dry season Wet season
Shrimp
diseases
45
Rice-aquaculture system
Therefore 2 water depth treatments (low & high) in rice-aquaculture
Saline water needs to be drained in July to allow leaching of salt by
rainfall prior to rice transplanting
Brackish water aquaculture production is higher if saline water is
kept for longer
Need shallow water after transplanting rice (<20 cm)
This is very shallow for aquaculture (importance of trenches)
Better rice productivity with shallower water
Better aquaculture productivity with deeper water
Some tradeoffs for rice & aquaculture system
46
Findings : Aquaculture-rice
47
Aquaculture production
LD – low depth
HD – high depth
0
500
1000
1500
2000
2500
3000
Farmer's practice Monoculture Polyculture
Yield(kgha-1)
Culture patterns
Shrimp (LD)
Fish (LD)
Shrimp (HD)
Fish (HD)
2013
Changed to lower
growth but higher
value fish species
0
500
1000
1500
2000
2500
3000
3500
4000
Farmer's practice Monoculture Polyculture
Yield(kgha-1)
Culture patterns
Shrimp (LD)
Fish (LD)
Shrimp (HD)
Fish (HD)
2012
48
Profitability of aquaculture (BDT x 1000 ha-1 )
(Including farmer labour & land lease value)
-100
0
100
200
300
400
500
600
700
800
FP (LD) FP (HD) Mono (LD)Mono (HD) Poly (LD) Poly (HD)
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2012
-100
0
100
200
300
400
500
600
FP (LD) FP (HD) Mono (LD) Mono (HD) Poly (LD) Poly (HD)
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2013
49
Profitability of aquaculture (BDT x 1000 ha-1 )
(Excluding farmer labour & land lease value)
0
100
200
300
400
500
600
700
800
FP (LD) FP (HD) Mono (LD) Mono (HD) Poly (LD) Poly (HD)
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2012
0
100
200
300
400
500
600
700
800
FP (LD) FP (HD) Mono (LD) Mono (HD) Poly (LD) Poly (HD)
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2013
50
Production of Aman Rice
0
500
1000
1500
2000
2500
3000
3500
BR11 BR47 BR54 Morichshail Kumri Jotai
Yield(kg/ka)
2012 2013
High yielding varieties Local varieties
51
September – drainage congestion in whole region
after heavy rain due to inadequate water conveyance
system (drainage)
October – water shortage - plenty of freshwater in
river but inadequate conveyance system (irrigation) 52
Findings : Aquaculture only
53
Production (kg/ha)
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
Farmer's practice Monoculture Polyculture
Yield(kgha-1)
Days of culture
Shrimp
Fish
2012
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
Farmer's practice Monoculture Polyculture
Yield(kgha-1)
Days of culture
Shrimp
Fish
2013
54
Profitability of aquaculture (BDT x 1000 ha-1 )
(includes farmer labour & land lease value)
-100
0
100
200
300
400
500
600
700
800
Farmer's practice Monoculture Polyculture
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2012
0
100
200
300
400
500
600
700
800
Farmer's practice Monoculture Polyculture
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2013
55
Profitability of aquaculture (BDT x 1000 ha-1 )
(excludes farmer labour & land lease value)
0
100
200
300
400
500
600
700
Farmer's practice Monoculture Polyculture
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2012
0
100
200
300
400
500
600
700
800
Farmer's practice Monoculture Polyculture
BDTha-1
Culture patterns
Variable cost
Total return
Gross margin
2013
56
0
20
40
60
80
100
120
140
160
Cost (Shrimp +
Tilapia)
Income from
Shrimp
Income from
Tilapia
BDTx1000ha-1
Impact of crop diversification in shrimp ghers during
cycle 1 (55-65 days)
57
Key challenges
Markets
• Scarcity of quality shrimp and fish seed
• Lack of quality feed in local market
Aquaculture management
• Prevention of escaping cat fish through dikes
• Aquatic weed control
Community
• Poor canal network for filling ponds & drainage
(need community system)
• Poaching risk increases (need to increase
productivity of all ghers to lessen predation of
individual ghers)
58
Other improvements
You can make your saline gher dike green and environment
friendly by adding trees
59
Other improvements
Vegetables can be grown on gher dikes during wet season
60
Other improvements
Local variety of grass grows very well on saline gher dikes
which can be used as fodder
61
Take home messages
 Farmer practice very low profit
 Improved practice increases profit 3-5 times
 Shrimp monoculture can be profitable, but highly risky
 Polyculture provides resilience against failure of
shrimp – profitable even if ALL shrimp die
 We failed to get high yields of rice because of inability
to drain (& irrigate) when needed
 Need good community water management systems for
both aquaculture and rice – for intake and drainage as
needed
 Neighbouring farmers are beginning to adopt
improved practices
62
63
Optimum Land Shaping & Harvesting
Practice for Rice-Fish Systems
in the Coastal Zone of West Bengal
64
65
Rainy season rice - dry season rice with fish
(across both seasons)
The cropping system
 More productive, profitable & sustainable
paddy cum fish culture systems
Goal
66
Kakdwip Block: Vill – Shibkalinagar
Namkhana Block: Vill- Madanganj
Experimental site
67
Objectives
 To evaluate the effect of pond area/land area ratio on system
performance
 20%
 30%
i.e. How big does the pond need to be to support dry season
rice?
 To evaluate the impact of harvesting method
 Single harvest
 Phased harvest
 3 replicates, split plot
68
4 Collaborators across 2 locations
69
PaddyVariety
Partition of pond and paddy field by Net and Bamboo
Fish Culture
without phase harvest
Fish Culture
with phase harvest
Earthen Embankment
TrenchPond area
(30% or 20%)
Paddy Cultivation Area
(70% or 80%)
Layout
70
Layout
71
Fish management
Species
 3 spp Indian Major Carp
Advance Fingerlings @ 4000/ha
(Catla:Rohu:Mrigal 30:35:35),
 Scampi-@1500/ha
Feed management
Broadcasting and tray feeding
Feed
 Pelleted feed
(protein-24%, lipid 4%) @ 5-3% of body weight)
72
Rice culture
Varieties
 Wet season - Amalmana
 Dry season –
Lalminikit (WGL 20471)
BINA-8
Fertilizer
Recommended practice
Irrigation of dry season rice
From pond using a pump
Cultivation of wet season
paddy variety
Cultivation of dry season
paddy variety 73
20% pond area - higher nitrate and phosphate in water
greater production of plankton (= fish food!)
74
0
100
200
300
400
500
600
700
800
900
1000
30% land
shaping
20% land
shaping
Production(kg/ha) Production of fish
0
200
400
600
800
1000
1200
Without phase
harvest
With phase
harvestProduction(kg/ha)
 Productivity 20% pond higher by 161 kg/ha
– due to higher nutrient concentration?
 Productivity phased harvest higher by 277 kg/ha
- due to progressive removal of larger fish
75
0
20
40
60
80
100
120
140
160
Rohu Catla Mrigal Scampi
Meanbodyweight(g)
30%
pond
20%
pond
Performance of individual species
Higher growth of 3 carp species in 20%
Lower growth of scampi in 20%
Sampling of fish
76
Paddy production (wet season)
Paddy harvesting and threshing
Greater lodging
from cyclone
77
Dyke cropping
Dyke crops Production (kg)/ha
land of PCF
Gross income
(Rs)/ha land of PCF
Vegetables 351 11,706
Oil seed 169 2,400
Fodder (seed) 458 5,490
Dyke cropping in Paddy cum fish culture
78
20% Land shaping 30% Land shaping
Component Total
Productivity
(kg/ha)
Amount
(x105 Rs )
Total
Productivity
(kg/ha)
Amount
(x105 Rs)
Rice (wet
season only)
2875 0.37 2900 0.38
Fish 895 1.29 743 1.10
Dyke
cropping
489 0.09 489 0.09
Gross Income 1.76 Gross Income 1.57
Total production & income to date
20% provided Rs. 19000/ha ($307/ha) more than 30% to date…
Dry season rice yet to come, also full economic analysis
79
 Higher fish production with phased harvesting
 Higher fish production with 20% pond area
 To date, higher value of production with 20% land
shaping
Conclusion
80
81
West Bengal, India
SW& SC Bangladesh
Polder 43/2/F
Polder 30
Polder 3
North 24 Parganas
South 24 Parganas
Homestead production systems: enhanced productivity for
food security in South Bangladesh and West Bengal, India
Objectives:
Comparison between southern Bangladesh and
West Bengal –
• Homestead Farming Systems (HFS)
• Socio-economic status of households
• Contribution of HFS to household income &
consumption
• Identify priority areas of improvement
Survey Samples (<1 ha-80%; 2012)
Country Region Salinity # HH surveyed
Bangladesh
Polder 43 Low 320
Polder 30 Moderate 338
Polder 3 High 461
Total 1,119
West Bengal
Block Kakdwip Low 120
Block Namkhana Moderate 120
Sandeshkhali I Moderate 120
Sandeshkhali II Moderate 120
Block Sagar High 240
Total 720
HFS
Pond
aquaculture
Beetle vine
Vegetable
production
Fruit garden
Livestock
Poultry
Components of HFS
• In Bangladesh only 50% poor people have pond in their homestead
while 97% households got a pond in India
• Beetle vine production in HFS only in West Bengal with higher
economic return
Household food
security
Homestead
Non-homestead
Land ownership pattern
Total land (field +homestead) Homestead land
Ratio of homestead to field land
Bangladesh
Bangladesh
Bangladesh West Bengal
Bangladesh
West Bengal
West Bengal
West Bengal
Bangladesh
West Bengal
Bangladesh
West Bengal
Homestead land
has higher
importance for
the poor farmers
in Bangladesh
Major occupation
West BengalBangladesh
Agriculture
Aquaculture
Betel vine
Business
Driver
Fishermen
Teacher
Carpenter
Job/Service
Labor
In Bangladesh higher number of hh depend on agriculture than W. Bengal
Contribution of HFS to annual household income
Country Off-farm Field HFS aq. HFS Non -aq. Total
Bangladesh 667 381 70 176 1,079
West Bengal 800 357 116 93 1,304
Annual household income (US$) from different sources by
country
Non-aq sources
contribute more
to overall income
in Bangladesh
5%
15%
31%
49%
Bangladesh
HFS Aq
HFS Non- Aq
Field
Off farm
9%
7%
25%
59%
West Bengal
10
20
30
40
00
< 1 < 1
Month
%ofhousehold
Bangladesh West Bengal
Food requirement satisfied by own products (HFS +
Field)
• Only ~20% hh with <1 ha land are meeting their year round food
requirement from own production, suggests opportunity for vertical
integration of the systems
• Over all households in West Bengal with higher amount of land supported
their food requirement better than Bangladesh
Meals per day
Yes
80%
No
20%
Bangladesh
~20% people in both countries do not get 3 meals
regularly
Yes
82%
No
18%
West Bengal
Need further work to better understand the factors influence
consumption in both the countries
-0.2
0
0.2
0.4
0.6
0.8
1
1.2Correlationscore(r)
Bangladesh
West Bengal
Correlation between production and consumption
HFS productivity ($/ha/year) in different salinity
Preliminary results says
YES
Does Homestead production system holds promise ???
Key remarks
Homestead production system contributes better in meeting
household food security of Functionally Landless groups
while small households are more dependent on non-
homestead production
HFS productivity significantly lower in high salinity areas than
low salinity areas in both the countries
Need to focus more research on improving productivity in
saline areas
No specific factors had significant role in regulating HFS
productivity
Most of the people are not self sufficient/food secured
Raising awareness on the importance of nutrition is crucial
There are opportunities to further improve the status of food
security particularly in the high saline zone
Women led participatory action research
(PAR) on homestead challenged pond
aquaculture
97
Shade
Shallow
Seasonality
Flooding risk
Multiple
ownership
Household water
use
Irrigation
Access for women
Why challenging ?
98
Objectives:
to improve nutrition & income through increasing
productivity of homestead ponds
to empower women thru participatory action research
(PAR)
Key pond interventions:
– fish species to increase production & consumption
– feeding strategies to avoid water pollution
– women capacity building
99
Locations & partners – under umbrella of G2
Legend:
Freshwater areas
Brackishwater areas
Partners:
 CPWF-G2
 CSISA
 AAS
 CCAFS
 AIN 100
PAR Process
101
Designing the research: Community consultation
PAR
HFS & integration
Pond water use
Aquaculture
Species selection
Feeding choice
Women participation
102
Experimental Treatments
Treatment Species Size Density
(#/ decimal)
Feeding Remark
1
Tilapia 25 gm 25
5% insect; 20%
Kitchen waste; 50%
home made; 25%
commercial
Region-1
(Batiaghata,
Amtoli,
Kaliganj and
Shamnagar)
Nona tengra 1 gm 50
Rui 100 gm 2
Male Golda 5-10 gm 5
2
Tilapia 25 gm 25
Koi 2 gm 50
Singh 5 gm 25
Male Golda 5-10gm 5
3
Tilapia 25 gm 25
Mrigal 100 gm 4
Catla 100 gm 2
Magur 5-10 gm 15
Mirror Carp 100 gm 1
1
Tilapia 25 gm 25
5% insect; 20%
Kitchen waste; 50%
home made; 25%
commercial
Region-2
(Barisal,
Jessore,
Faridpur and
Jhalokathi)
Koi 2 gm 50
Singh 5-gm 25
Mirror Carp 100 gm 2
2
Tilapia 25 gm 25
Koi 2 gm 50
Magur 5-10gm 15
Silver Carp 100 gm 2
3
Tilapia 25 gm 25
Male Golda 5-10gm 5
Rui 100 gm 2
Katla 100 gm 2
Japani puti 1-2 gm 10
Women preference
Improved extensive
Regular consumption
Stress tolerant
High value fish
Mixed feeding
Less fertilization
103
Building women farmers research Capacity
104
Women Farmer Researchers Learning Sharing Workshop:
Learn
Share
Analyze
Create a movement for PAR
Agenda:
Developing common understanding of research
Documenting major learnings
Participatory evaluation of 2013 research by treatment
Prioritization of development outcomes
Sharing group findings to other groups (global café)
Analyzing problems and planning for new PAR cycle
105
Proper technology and care
can increase challenged pond
productivity greatly (x5)
Basic aquaculture
PAR and PM&E
Learning
106
Participatory evaluation of fish
1.Tilapia
2. Koi
Everywhere…
107
Prioritizing development outcomes
Increased fish
consumption
Importance in
family and
society
increased
Increased
income
Research &
Aquaculture
108
Sharing
Individual & group level
observation and findings
109
Analyze
Quality fish seed supply at beginning of season
Salinity, water quality and disease management
Low cost feed 110
Next:
analyze pond record books & impact survey data
consult with communities for 2014 PAR design
Continue to provide technical, facilitation & education
support (gender, nutrition, rights, needs)
continue documenting research & development outcomes
111
Staff capacity building
112
113
114
The big ones:
1. How can we implement improved community management to
achieve the benefits of improved production systems?
(about water; agricultural cropping systems, aquaculture systems)
2. Achieving no. 1 requires additional investment in drainage/water
management infrastructure inside the polders – is it economic?,
what’s the optimum?
Many others specific to components of improved
systems:
• rice varietal improvement (e.g. short duration, cold tolerant boro)
• nutrient cycling in rice-shrimp systems
• homestead production systems (e.g. pond-ecosystem approach)
• sustainability of groundwater pumping for boro rice
• establishment of rabi crops
• aquaculture in saline areas
Research questions for the future (many)
115
Take home messages
1. Tremendous potential to greatly increase productivity, nutritive
value, profitability & resilience of production systems in the
polders
• agricultural systems (rice & non-rice)
• aquacultural systems
• rice-aquaculture systems
• homestead production systems
2. To unlock this potential need to invest in
• improved water mgt
• with special emphasis on drainage mgt (the entry point)
and infrastructure inside the polders
3. Community co-ordination is critical to achieving this – needs
community ownership & to be community-driven

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G2 - Productive, profitable, resilient agriculture & aquaculture systems

  • 1. G2 - Productive, profitable, resilient agriculture & aquaculture systems 1
  • 2. 2 Take home messages 1. Tremendous potential to greatly increase productivity, nutritive value, profitability & resilience of production systems in the polders • agricultural systems (rice & non-rice) • aquacultural systems • rice-aquaculture systems • homestead production systems 2. To unlock this potential need to invest in • improved water mgt • with special emphasis on drainage mgt (the entry point) and infrastructure inside the polders 3. Community co-ordination is critical to achieving this – needs community ownership & to be community-driven
  • 3. West Bengal, India SW& SC Bangladesh Patuakhali STU Polder 43/2/F Polder 30 Polder 3 North 24 Parganas South 24 Parganas Andy Nelson “LOW SALINITY” (L) •Water “stagnation” 30-50 cm weeks to months in aman •River water fresh year-round •Mild soil salinity in dry season “MEDIUM SALINITY” (M) •Water “stagnation” 30-50 cm weeks to months in aman •River water saline mid-Feb-Jun •Medium soil salinity in dry season “HIGH SALINITY” (H) •Water “stagnation” 30-50 cm weeks to months in aman •River water saline Dec-Jul •High soil salinity in dry season 3
  • 4. Objectives (6) 1. Rice variety evaluation • aus (early rainy season) – low (L), medium (M) salinity • aman (main rainy season) - L, M, high (H) salinity • boro (dry season) - L, M 2. Rice-based cropping system intensification • Rice-rice-rice L rice-rice M • Rice-rice-rabi L rice-rabi M • Rice+fish - brackish water aquaculture H 3. Homestead production systems – L, M, H • Analysis - literature review & surveys • Improving productivity of homestead systems/empowering women 4. Brackish water aquaculture systems - H • Evaluation of improved management options 5. Technology & policy recommendations 6. Pilot community water management – CPWF Innovation Grant 4
  • 6. 6
  • 7. 7
  • 8. 8 Liz 1. Improving rice–based agricultural cropping systems Saha Ashutosh 2. Improving rice-aquaculture & aquaculture only systems Manjurul 3. Homestead production systems - cross-country comparison Kabir - women-led participatory action research Today’s presentation
  • 9. Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Traditional Rice 2-3.5 t/ha Predominant agricultural cropping systems in the low & moderately saline regions of the coastal zone of Bangladesh ..................Fallow…………………........ Low Med ~40% • Traditional variety • Tall, photoperiod sensitive (late maturing – harvested Dec/Jan) • 35-70 day old seedlings 9
  • 10. Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Traditional Rice 2-3.5 t/ha Traditional Rice 2-3.5 t/ha Sesame 0-1 t/haTraditional Rice 2-3.5 t/ha Predominant agricultural cropping systems in the low & moderately saline regions of the coastal zone of Bangladesh Khesari 0.2-1 t/ha ............Fallow……………. …..Fallow.... ....……........ ..................Fallow…………………........ Low Med Med Low ~40% 10
  • 11. Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Traditional Rice 2-3.5 t/ha Traditional Rice 2-3.5 t/ha Sesame 0-1 t/haTraditional Rice 2-3.5 t/ha Predominant agricultural cropping systems in the low & moderately saline regions of the coastal zone of Bangladesh Khesari 0.2-1 t/ha ............Fallow……………. …..Fallow.... ....……........ ..................Fallow…………………........ Low Med Med Low ~40% Traditional Rice 2-3.5 t/ha Aus 3-4 t/ha............Fallow……………... Low 11
  • 12. 12 For high rice yield & cropping system intensification in polders we need rice varieties with….. 1. High yield potential 2. Tolerance to stresses, especially • water stagnation (30-50 cm, week...months) • salinity • submergence after transplanting • singly and in combination 3. Early maturity (for system intensification) 4. Preferred grain quality
  • 13. 13 Rice variety evaluation in farmers’ fields
  • 14. Tolerance to water stagnation for aman essential throughout coastal zone This crop experienced deep water (up to 44 cm) for several weeks (4.6 t/ha) 14 BRRI dhan54
  • 15. Amal-Mana ~4 t/ha (Water stagnation tolerant) Sabita <2 t/ha 15
  • 16. Submergence tolerance needed for aman (& aus) (example in a shrimp-rice gher) 2nd transplanting submerged for 1 week shortly after transplanting – BRRI dhan52 (BR11-Sub1) 16 3rd transplanting NOT submerged
  • 17. Sabita <2 t/ha Swarna sub1, 3.5 t/ha 17
  • 18. Salinity tolerance needed for aman in high salinity areas (& for aus) - especially for aman in ghers used for brackish water shrimp in the dry season 18 BRRI dhan47 in gher 3.6 t/ha BRRI dhan28 BRRI dhan61 3.8 t/ha BRRI dhan28 BRRI dhan47 4 t/ha Parijat <1 t/ha
  • 19. 19 With improved varieties & intensification we have achieved the following …..on-farm…..in the polders
  • 20. Boro (140-145 d)T. Aman (130-140 d)Aus (100-105 d) 20 Cropping system intensification for low salinity areas 1. Aus-aman-boro (15-17 t/ha) HYV Short duration Salt tolerant HYV Medium duration Water stagnation tolerant HYV Medium duration “Early” sowing Successfully implemented on-farm for 3 years – 8th crop – polder 43/2F A M J J A S O N D J F M A
  • 21. Rabi (110-140 d) T. Aman (130-140 d)Aus (100-105 d) A M J J A S O N D J F M A 21 Cropping system intensification for low salinity areas 2. Aus-aman-rabi (9-10 t/ha rice+9 t/ha maize OR 3.5 t/ha sunflower etc) HYV Short duration Salt tolerant HYV Medium duration Water stagnation tolerant HYV Maize Sunflower, Water melon Chilli etc. Successfully implemented on-farm for 3 years – 8th crop – polder 43/2F
  • 22. Boro (140-145 d)T. Aman (130-140 d) 22 Cropping system intensification for medium salinity/water short areas 1. Aman-boro (~10 t/ha) HYV Medium duration Water stagnation tolerant HYV “Early” sowing Medium duration Successfully implemented on-farm for 3 years, 6th crop – polder 30 A M J J A S O N D J F M A
  • 23. Rabi (110-140 d)T. Aman (130-140 d) A M J J A S O N D J F M A 23 Cropping system intensification for medium salinity areas 2. Aman-rabi (~4.5 t/ha rice + ~5 t/ha maize, 1.5 t/ha sunflower) HYV Maize Sunflower Sesame Implemented on-farm for 2 years, 4th crop – polder 30 – but NOT to potential; Community water management, cropping system synchronisation, adoption challenges
  • 24. 24 With improved varieties & cropping system intensification, productivity can be increased 2 to several-fold Widespread implementation requires improved water management
  • 25. Water mgt ingredients for a Green Revolution in the Polders 1. Separation of lands of higher & lower elevation (mini-water mgt units) Prevent accumulation of drainage in lowlands – enable rainy season HYVrice 25
  • 27. 0 20 40 60 80 100 120 140 160 180 200 220 240 Rainfall&Waterdepth(mm) Transplanting ~250 mm rain after transplanting – need to drain to save the HYV rice 27
  • 28. 28
  • 29. Water mgt ingredients for a Green Revolution in the Polders 1. Separation of lands of higher & lower elevation (mini-water mgt units) Prevent accumulation of drainage in lowlands – enable rainy season HYVrice 2. Strategic drainage during the rainy season Enables cultivation of HYV & thus earlier harvest (mid-Nov) 29
  • 30. Water mgt ingredients for a Green Revolution in the Polders 1. Separation of lands of higher & lower elevation (mini-water mgt units) Prevent accumulation of drainage in lowlands – enable rainy season HYVrice 2. Strategic drainage during the rainy season Enables cultivation of HYV & earlier harvest (mid-Nov) 3. Drainage shortly before aman harvest (early Nov) Enables soil to dry for early (timely) establishment of rabi crops 30
  • 31. Sesame Mungbean The consequences of late rabi crop establishment – low yields or complete failure due to early kharif rains - high yield, high value crops out of the question (e.g. sunflower, maize) AFTER RICE HARVEST – some areas Low input crops – late sown (Feb/Mar) because of late rice harvest 31
  • 32. Water mgt ingredients for a Green Revolution in the Polders 1. Separation of lands of higher & lower elevation (mini-water mgt units) Prevent accumulation of drainage in lowlands – enable rainy season HYVrice 2. Strategic drainage during the rainy season Enables cultivation of HYV & earlier harvest (mid-Nov) 3. Drainage shortly before aman harvest (early Nov) Enables soil to dry for early (timely) establishment of rabi crops 4. Make use of available fresh water for irrigation during the dry season In some areas lots of fresh water in the rivers almost year-round - untapped 32 0.00 4.00 8.00 12.00 16.00 7-Apr-11 6-Jun-11 -Aug-11 4-Oct-11 -Dec-11 -Feb-12 1-Apr-12 0-Jun-12 -Aug-12 8-Oct-12 -Dec-12 -Feb-13 6-Apr-13 5-Jun-13 -Aug-13 Salinity(ppt) Polder 30 (Station-2, Pussur river) 0.0 4.0 8.0 12.0 16.0 20.0 24.0 26-Feb 6-Jun 14-Sep 23-Dec 1-Apr 10-Jul 18-Oct 26-Jan 6-May 14-Aug 22-Nov 2-Mar Salinity(ppt) Date Polder 43-2f (Station-2 (Out Side),Paira River) IWM
  • 33. Water mgt ingredients for a Green Revolution in the Polders 1. Separation of lands of higher & lower elevation (mini-water mgt units) Prevent accumulation of drainage in lowlands – enable rainy season HYVrice 2. Strategic drainage during the rainy season Enables cultivation of HYV & earlier harvest (mid-Nov) 3. Drainage shortly before aman harvest (early Nov) Enables soil to dry for early (timely) establishment of rabi crops 4. Make use of available fresh water for irrigation during the dry season In some areas lots of fresh water in the rivers almost year-round - untapped 5. De-silting of khals ..Increases storage capacity for irrigation when river too saline ..Facilitates drainage 33
  • 34. Khals within polders vary greatly in size, can store fresh water during the dry season, but often heavily silted up (some no longer exist), blocked… 34
  • 35. Water mgt ingredients for a Green Revolution in the Polders 1. Separation of lands of higher & lower elevation (mini-water mgt units) Prevent accumulation of drainage in lowlands – enable rainy season HYVrice 2. Strategic drainage during the rainy season Enables cultivation of HYV & earlier harvest (mid-Nov) 3. Drainage shortly before aman harvest (early Nov) Enables soil to dry for early (timely) establishment of rabi crops 4. Make use of available fresh water for irrigation during the dry season In some areas lots of fresh water in the rivers almost year-round - untapped 5. De-silting of khals ..Increases storage capacity for irrigation when river too saline ..Facilitates drainage 6. “Early” establishment of boro rice after aman (sow mid-Nov) Reduces storage requirement for fresh water to finish the crop off after the rivers become too saline 35 Polder 30 - sufficient storage for 15-20% of land to grow boro rice - desilting of khals  roughly double the possible boro rice area
  • 36. Water mgt ingredients for a Green Revolution in the Polders 1. Separation of lands of higher & lower elevation (mini-water mgt units) Prevent accumulation of drainage in lowlands – enable rainy season HYVrice 2. Strategic drainage during the rainy season Enables cultivation of HYV & earlier harvest (mid-Nov) 3. Drainage shortly before aman harvest (early Nov) Enables soil to dry for early (timely) establishment of rabi crops 4. Make use of available fresh water for irrigation during the dry season In some areas lots of fresh water in the rivers almost year-round - untapped 5. De-silting of khals (CPWF phase 1) ..Increases storage capacity for irrigation when river too saline ..Facilitates drainage 6. “Early” establishment of boro rice after aman (sow mid-Nov – CPWF phase 1) Reduces storage requirement for fresh water to finish the crop off after the rivers become too saline 7. High yielding/value rabi crops in the dry season, espec. in water short areas Only need 2-3 irrigations 36
  • 37. 37
  • 38. Productive, Profitable, Resilient and Diversified Aquaculture Systems in High Salinity Areas 38
  • 39. BANGLADESH Aquaculture: Salinity fluctuates from high in dry season to medium in rainy season Aquaculture-rice: Salinity fluctuates from high in dry season to low in rainy season 39
  • 40. Research Objective Improved management for enhanced productivity, profitability & resilience in aquaculture-rice & aquaculture only systems 24 mini-ghers for aquaculture-rice 12 mini-ghers for aquaculture only 407-870 m2 866-1463 m2 Trenches for fish refuge when water shallow for rice establishment 40
  • 42. 42 Satellite images of the pond complexes Aquaculture-rice Aquaculture only
  • 43. Aquaculture treatments (4 reps) Treatments Culture patterns 2012 2013 Cycle 1 Cycle 2 Cycle 3 (+rice) Cycle 1 Cycle 2 Cycle 3 (+rice) Farmer’s practice Poly Shrimp + different sp of fish (multiple stocking & harvesting) Shrimp + different sp of fish (multiple stocking & harvesting) Improved practice 1 Mono Shrimp Tilapia Prawn Prawn Shrimp Shrimp Tengra ……………… Tilapia Improved practice 2 Poly Shrimp Tilapia Tilapia Tengra Prawn Singh Prawn Singh Shrimp Tilapia Shrimp Tilapia Tilapia Tengra ……………… Rohu Singh Magur Managed by farmers 43 Managedbyresearchers
  • 44. Management Practice Farmer’s Practice Improved 1 & 2 Liming 200 kg ha-1 200 kg ha-1 Water filtering Unfiltered Filtered Predatory Fish Not eradicated Eradicated Disinfection No disinfection Disinfected Fertilization No fertilizer Fertilizer & dolomite Shrimp seed Not PCR tested PCR tested Feed No feed Feeding Water replenishment When needed When needed Post stocking fertilization Very insufficient When primary production is low Fish seed Some wild All from hatcheries 44
  • 45. Timeline Shrimp & fish Stocking 1 Harvest 3 AprilMarch Aug. Dec. Harvest 2 Sept. Stocking 3 & rice transplanting Harvest 1 & Stocking 2 June July Nov.May Oct. Dry season Wet season Shrimp diseases 45
  • 46. Rice-aquaculture system Therefore 2 water depth treatments (low & high) in rice-aquaculture Saline water needs to be drained in July to allow leaching of salt by rainfall prior to rice transplanting Brackish water aquaculture production is higher if saline water is kept for longer Need shallow water after transplanting rice (<20 cm) This is very shallow for aquaculture (importance of trenches) Better rice productivity with shallower water Better aquaculture productivity with deeper water Some tradeoffs for rice & aquaculture system 46
  • 48. Aquaculture production LD – low depth HD – high depth 0 500 1000 1500 2000 2500 3000 Farmer's practice Monoculture Polyculture Yield(kgha-1) Culture patterns Shrimp (LD) Fish (LD) Shrimp (HD) Fish (HD) 2013 Changed to lower growth but higher value fish species 0 500 1000 1500 2000 2500 3000 3500 4000 Farmer's practice Monoculture Polyculture Yield(kgha-1) Culture patterns Shrimp (LD) Fish (LD) Shrimp (HD) Fish (HD) 2012 48
  • 49. Profitability of aquaculture (BDT x 1000 ha-1 ) (Including farmer labour & land lease value) -100 0 100 200 300 400 500 600 700 800 FP (LD) FP (HD) Mono (LD)Mono (HD) Poly (LD) Poly (HD) BDTha-1 Culture patterns Variable cost Total return Gross margin 2012 -100 0 100 200 300 400 500 600 FP (LD) FP (HD) Mono (LD) Mono (HD) Poly (LD) Poly (HD) BDTha-1 Culture patterns Variable cost Total return Gross margin 2013 49
  • 50. Profitability of aquaculture (BDT x 1000 ha-1 ) (Excluding farmer labour & land lease value) 0 100 200 300 400 500 600 700 800 FP (LD) FP (HD) Mono (LD) Mono (HD) Poly (LD) Poly (HD) BDTha-1 Culture patterns Variable cost Total return Gross margin 2012 0 100 200 300 400 500 600 700 800 FP (LD) FP (HD) Mono (LD) Mono (HD) Poly (LD) Poly (HD) BDTha-1 Culture patterns Variable cost Total return Gross margin 2013 50
  • 51. Production of Aman Rice 0 500 1000 1500 2000 2500 3000 3500 BR11 BR47 BR54 Morichshail Kumri Jotai Yield(kg/ka) 2012 2013 High yielding varieties Local varieties 51
  • 52. September – drainage congestion in whole region after heavy rain due to inadequate water conveyance system (drainage) October – water shortage - plenty of freshwater in river but inadequate conveyance system (irrigation) 52
  • 54. Production (kg/ha) 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 Farmer's practice Monoculture Polyculture Yield(kgha-1) Days of culture Shrimp Fish 2012 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 Farmer's practice Monoculture Polyculture Yield(kgha-1) Days of culture Shrimp Fish 2013 54
  • 55. Profitability of aquaculture (BDT x 1000 ha-1 ) (includes farmer labour & land lease value) -100 0 100 200 300 400 500 600 700 800 Farmer's practice Monoculture Polyculture BDTha-1 Culture patterns Variable cost Total return Gross margin 2012 0 100 200 300 400 500 600 700 800 Farmer's practice Monoculture Polyculture BDTha-1 Culture patterns Variable cost Total return Gross margin 2013 55
  • 56. Profitability of aquaculture (BDT x 1000 ha-1 ) (excludes farmer labour & land lease value) 0 100 200 300 400 500 600 700 Farmer's practice Monoculture Polyculture BDTha-1 Culture patterns Variable cost Total return Gross margin 2012 0 100 200 300 400 500 600 700 800 Farmer's practice Monoculture Polyculture BDTha-1 Culture patterns Variable cost Total return Gross margin 2013 56
  • 57. 0 20 40 60 80 100 120 140 160 Cost (Shrimp + Tilapia) Income from Shrimp Income from Tilapia BDTx1000ha-1 Impact of crop diversification in shrimp ghers during cycle 1 (55-65 days) 57
  • 58. Key challenges Markets • Scarcity of quality shrimp and fish seed • Lack of quality feed in local market Aquaculture management • Prevention of escaping cat fish through dikes • Aquatic weed control Community • Poor canal network for filling ponds & drainage (need community system) • Poaching risk increases (need to increase productivity of all ghers to lessen predation of individual ghers) 58
  • 59. Other improvements You can make your saline gher dike green and environment friendly by adding trees 59
  • 60. Other improvements Vegetables can be grown on gher dikes during wet season 60
  • 61. Other improvements Local variety of grass grows very well on saline gher dikes which can be used as fodder 61
  • 62. Take home messages  Farmer practice very low profit  Improved practice increases profit 3-5 times  Shrimp monoculture can be profitable, but highly risky  Polyculture provides resilience against failure of shrimp – profitable even if ALL shrimp die  We failed to get high yields of rice because of inability to drain (& irrigate) when needed  Need good community water management systems for both aquaculture and rice – for intake and drainage as needed  Neighbouring farmers are beginning to adopt improved practices 62
  • 63. 63
  • 64. Optimum Land Shaping & Harvesting Practice for Rice-Fish Systems in the Coastal Zone of West Bengal 64
  • 65. 65
  • 66. Rainy season rice - dry season rice with fish (across both seasons) The cropping system  More productive, profitable & sustainable paddy cum fish culture systems Goal 66
  • 67. Kakdwip Block: Vill – Shibkalinagar Namkhana Block: Vill- Madanganj Experimental site 67
  • 68. Objectives  To evaluate the effect of pond area/land area ratio on system performance  20%  30% i.e. How big does the pond need to be to support dry season rice?  To evaluate the impact of harvesting method  Single harvest  Phased harvest  3 replicates, split plot 68
  • 69. 4 Collaborators across 2 locations 69
  • 70. PaddyVariety Partition of pond and paddy field by Net and Bamboo Fish Culture without phase harvest Fish Culture with phase harvest Earthen Embankment TrenchPond area (30% or 20%) Paddy Cultivation Area (70% or 80%) Layout 70
  • 72. Fish management Species  3 spp Indian Major Carp Advance Fingerlings @ 4000/ha (Catla:Rohu:Mrigal 30:35:35),  Scampi-@1500/ha Feed management Broadcasting and tray feeding Feed  Pelleted feed (protein-24%, lipid 4%) @ 5-3% of body weight) 72
  • 73. Rice culture Varieties  Wet season - Amalmana  Dry season – Lalminikit (WGL 20471) BINA-8 Fertilizer Recommended practice Irrigation of dry season rice From pond using a pump Cultivation of wet season paddy variety Cultivation of dry season paddy variety 73
  • 74. 20% pond area - higher nitrate and phosphate in water greater production of plankton (= fish food!) 74
  • 75. 0 100 200 300 400 500 600 700 800 900 1000 30% land shaping 20% land shaping Production(kg/ha) Production of fish 0 200 400 600 800 1000 1200 Without phase harvest With phase harvestProduction(kg/ha)  Productivity 20% pond higher by 161 kg/ha – due to higher nutrient concentration?  Productivity phased harvest higher by 277 kg/ha - due to progressive removal of larger fish 75
  • 76. 0 20 40 60 80 100 120 140 160 Rohu Catla Mrigal Scampi Meanbodyweight(g) 30% pond 20% pond Performance of individual species Higher growth of 3 carp species in 20% Lower growth of scampi in 20% Sampling of fish 76
  • 77. Paddy production (wet season) Paddy harvesting and threshing Greater lodging from cyclone 77
  • 78. Dyke cropping Dyke crops Production (kg)/ha land of PCF Gross income (Rs)/ha land of PCF Vegetables 351 11,706 Oil seed 169 2,400 Fodder (seed) 458 5,490 Dyke cropping in Paddy cum fish culture 78
  • 79. 20% Land shaping 30% Land shaping Component Total Productivity (kg/ha) Amount (x105 Rs ) Total Productivity (kg/ha) Amount (x105 Rs) Rice (wet season only) 2875 0.37 2900 0.38 Fish 895 1.29 743 1.10 Dyke cropping 489 0.09 489 0.09 Gross Income 1.76 Gross Income 1.57 Total production & income to date 20% provided Rs. 19000/ha ($307/ha) more than 30% to date… Dry season rice yet to come, also full economic analysis 79
  • 80.  Higher fish production with phased harvesting  Higher fish production with 20% pond area  To date, higher value of production with 20% land shaping Conclusion 80
  • 81. 81
  • 82. West Bengal, India SW& SC Bangladesh Polder 43/2/F Polder 30 Polder 3 North 24 Parganas South 24 Parganas Homestead production systems: enhanced productivity for food security in South Bangladesh and West Bengal, India
  • 83. Objectives: Comparison between southern Bangladesh and West Bengal – • Homestead Farming Systems (HFS) • Socio-economic status of households • Contribution of HFS to household income & consumption • Identify priority areas of improvement
  • 84. Survey Samples (<1 ha-80%; 2012) Country Region Salinity # HH surveyed Bangladesh Polder 43 Low 320 Polder 30 Moderate 338 Polder 3 High 461 Total 1,119 West Bengal Block Kakdwip Low 120 Block Namkhana Moderate 120 Sandeshkhali I Moderate 120 Sandeshkhali II Moderate 120 Block Sagar High 240 Total 720
  • 85. HFS Pond aquaculture Beetle vine Vegetable production Fruit garden Livestock Poultry Components of HFS • In Bangladesh only 50% poor people have pond in their homestead while 97% households got a pond in India • Beetle vine production in HFS only in West Bengal with higher economic return
  • 87. Land ownership pattern Total land (field +homestead) Homestead land Ratio of homestead to field land Bangladesh Bangladesh Bangladesh West Bengal Bangladesh West Bengal West Bengal West Bengal Bangladesh West Bengal Bangladesh West Bengal Homestead land has higher importance for the poor farmers in Bangladesh
  • 88. Major occupation West BengalBangladesh Agriculture Aquaculture Betel vine Business Driver Fishermen Teacher Carpenter Job/Service Labor In Bangladesh higher number of hh depend on agriculture than W. Bengal
  • 89. Contribution of HFS to annual household income Country Off-farm Field HFS aq. HFS Non -aq. Total Bangladesh 667 381 70 176 1,079 West Bengal 800 357 116 93 1,304 Annual household income (US$) from different sources by country Non-aq sources contribute more to overall income in Bangladesh 5% 15% 31% 49% Bangladesh HFS Aq HFS Non- Aq Field Off farm 9% 7% 25% 59% West Bengal
  • 90. 10 20 30 40 00 < 1 < 1 Month %ofhousehold Bangladesh West Bengal Food requirement satisfied by own products (HFS + Field) • Only ~20% hh with <1 ha land are meeting their year round food requirement from own production, suggests opportunity for vertical integration of the systems • Over all households in West Bengal with higher amount of land supported their food requirement better than Bangladesh
  • 91. Meals per day Yes 80% No 20% Bangladesh ~20% people in both countries do not get 3 meals regularly Yes 82% No 18% West Bengal
  • 92. Need further work to better understand the factors influence consumption in both the countries -0.2 0 0.2 0.4 0.6 0.8 1 1.2Correlationscore(r) Bangladesh West Bengal Correlation between production and consumption
  • 93. HFS productivity ($/ha/year) in different salinity
  • 94. Preliminary results says YES Does Homestead production system holds promise ???
  • 95. Key remarks Homestead production system contributes better in meeting household food security of Functionally Landless groups while small households are more dependent on non- homestead production HFS productivity significantly lower in high salinity areas than low salinity areas in both the countries Need to focus more research on improving productivity in saline areas No specific factors had significant role in regulating HFS productivity Most of the people are not self sufficient/food secured Raising awareness on the importance of nutrition is crucial There are opportunities to further improve the status of food security particularly in the high saline zone
  • 96.
  • 97. Women led participatory action research (PAR) on homestead challenged pond aquaculture 97
  • 99. Objectives: to improve nutrition & income through increasing productivity of homestead ponds to empower women thru participatory action research (PAR) Key pond interventions: – fish species to increase production & consumption – feeding strategies to avoid water pollution – women capacity building 99
  • 100. Locations & partners – under umbrella of G2 Legend: Freshwater areas Brackishwater areas Partners:  CPWF-G2  CSISA  AAS  CCAFS  AIN 100
  • 102. Designing the research: Community consultation PAR HFS & integration Pond water use Aquaculture Species selection Feeding choice Women participation 102
  • 103. Experimental Treatments Treatment Species Size Density (#/ decimal) Feeding Remark 1 Tilapia 25 gm 25 5% insect; 20% Kitchen waste; 50% home made; 25% commercial Region-1 (Batiaghata, Amtoli, Kaliganj and Shamnagar) Nona tengra 1 gm 50 Rui 100 gm 2 Male Golda 5-10 gm 5 2 Tilapia 25 gm 25 Koi 2 gm 50 Singh 5 gm 25 Male Golda 5-10gm 5 3 Tilapia 25 gm 25 Mrigal 100 gm 4 Catla 100 gm 2 Magur 5-10 gm 15 Mirror Carp 100 gm 1 1 Tilapia 25 gm 25 5% insect; 20% Kitchen waste; 50% home made; 25% commercial Region-2 (Barisal, Jessore, Faridpur and Jhalokathi) Koi 2 gm 50 Singh 5-gm 25 Mirror Carp 100 gm 2 2 Tilapia 25 gm 25 Koi 2 gm 50 Magur 5-10gm 15 Silver Carp 100 gm 2 3 Tilapia 25 gm 25 Male Golda 5-10gm 5 Rui 100 gm 2 Katla 100 gm 2 Japani puti 1-2 gm 10 Women preference Improved extensive Regular consumption Stress tolerant High value fish Mixed feeding Less fertilization 103
  • 104. Building women farmers research Capacity 104
  • 105. Women Farmer Researchers Learning Sharing Workshop: Learn Share Analyze Create a movement for PAR Agenda: Developing common understanding of research Documenting major learnings Participatory evaluation of 2013 research by treatment Prioritization of development outcomes Sharing group findings to other groups (global café) Analyzing problems and planning for new PAR cycle 105
  • 106. Proper technology and care can increase challenged pond productivity greatly (x5) Basic aquaculture PAR and PM&E Learning 106
  • 107. Participatory evaluation of fish 1.Tilapia 2. Koi Everywhere… 107
  • 108. Prioritizing development outcomes Increased fish consumption Importance in family and society increased Increased income Research & Aquaculture 108
  • 109. Sharing Individual & group level observation and findings 109
  • 110. Analyze Quality fish seed supply at beginning of season Salinity, water quality and disease management Low cost feed 110
  • 111. Next: analyze pond record books & impact survey data consult with communities for 2014 PAR design Continue to provide technical, facilitation & education support (gender, nutrition, rights, needs) continue documenting research & development outcomes 111
  • 113. 113
  • 114. 114 The big ones: 1. How can we implement improved community management to achieve the benefits of improved production systems? (about water; agricultural cropping systems, aquaculture systems) 2. Achieving no. 1 requires additional investment in drainage/water management infrastructure inside the polders – is it economic?, what’s the optimum? Many others specific to components of improved systems: • rice varietal improvement (e.g. short duration, cold tolerant boro) • nutrient cycling in rice-shrimp systems • homestead production systems (e.g. pond-ecosystem approach) • sustainability of groundwater pumping for boro rice • establishment of rabi crops • aquaculture in saline areas Research questions for the future (many)
  • 115. 115 Take home messages 1. Tremendous potential to greatly increase productivity, nutritive value, profitability & resilience of production systems in the polders • agricultural systems (rice & non-rice) • aquacultural systems • rice-aquaculture systems • homestead production systems 2. To unlock this potential need to invest in • improved water mgt • with special emphasis on drainage mgt (the entry point) and infrastructure inside the polders 3. Community co-ordination is critical to achieving this – needs community ownership & to be community-driven

Editor's Notes

  1. we work on all the important systems involving rice, upland or rabi crops, aquaculture, homestead production systems
  2. Working in low, medium and high salinity locations in Bangladesh & India
  3. Identifying superior varieties for all seasons and salinity regimes
  4. 10 formal partners (LoAs) Collaborating with several other projects – e.g. CSISA and CPWF are jointly supporting 3 PhD scholars embedded in the CPWF G2 team
  5. Sukanta, Subasis, Dhiman
  6. 47 is bold grain, 61 is medium grain
  7. Haven’t been as successful as we would like to be, at least partly due to issues around cropping system synchronisation and community water management
  8. There are several things that need to happen to improve water management in the polders
  9. 250 mm on 2 occasions, the first shortly after transplanting; able to get the water off in 3-4 d with systematic operation of the sluice gate
  10. Polder 30 fresh water in rivers ~7 months
  11. Explain the design for improved mgt – ditch for fish refuge, strong wall so can have deeper water…
  12. This was a huge undertaking in partnership with Feed the Future
  13. FP was managed by the local farmers
  14. 2nd stocking delayed due to unavailability of quality seed
  15. Year 1. Significantly higher fish production in improved systems in both water depths Year 2. Significantly higher shrimp production in both improved systems and sig higher fish production in polyculture
  16. FP not profitable – no green bar above zero in 2012 Improved systems highly profitable,
  17. Higher benefit in farmer’s practice in 2013 due to improved management
  18. Year 1 – very low yields of rice because of big water management problems…. Planned 3 HYV, with salt and some water stagnation tolerance at seedling age of about 35 d. But water too deep and saline & had to wait until seedlings 65 days old – we know that using older seedlings will reduce yield, but no choice because no where to drain. Hence low yields – if we could have managed water depth/salinity as planned expecting 4-5 t/ha. So we also sourced some traditional taller varieties (43 day old seedlings transplanted) – one of which performed well under these conditions. Year 2 Yields improved but still disappointing because…..
  19. Photo of netting
  20. Adding fruit and timber tree will increase profitability and resilience
  21. A good way of diversifying gher food products
  22. Reduces soil erosion and increases possibility of integrating livestock within gher system. This can be used as livestock fodder
  23. Systems in which a pond is dug in the field, used for fish production, and for irrigation of rice in the dry season
  24. Photos of the 3 species
  25. Bar graph showing
  26. Use absolute amounts (not per hectare)
  27. Working in low, medium and high salinity locations in Bangladesh & India
  28. Samples covered low, medium and high salinity regions
  29. Socio-economic
  30. Presented in median
  31. Challenged ponds; uses of ponds
  32. An important part of the process is staff capacity building