Doubled-Up Legumes in Malawi
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Doubled-Up Legumes in Malawi:
An Innovation for Sustainable Rain-Fed Cereal Production in Developing
Countries
Sieglinde Snapp1, Regis Chikowo1,2, Wezi Mhango3, Vicki Morrone1, Mateete
Bekunda2, and Irmgard Hoeschle-Zeledon2
1Michigan State University, 2IITA, 3Lilongwe University of Agriculture and Natural
Resources
Tropentag 2014, Prague, Czech Republic - 17-19 September, 2014
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Africa - 7 to 10 kg/Ha fertilizer
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Two types of legumes
Annuals - for foodPerennials – agroforestry soil fertility & fuelwood
Bean, groundnut & soyabean Gliricidia & tephrosia trees
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A third way: doubled up legumes
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A third way: doubled up legumesPigeon pea(Cajanus cajan)
Soyabean
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Elevation Zones &
Agricultural Development Divisions
KarongaADD
MzuzuADD
KasunguADD
Lilongwe ADD
MachingaADD
BlantyreADD
ShireValley
ADD
Mzuzu
Lilongwe
Blantyre
Zomba
Kasungu
Karonga
Mchinji
Chitipa
Salima
Lower Shire Valley:
< 200 m elevation
Lakeshore, Middle &
Upper Shire: 200 - 760 m
Highlands:
> 1300 m
Mid-elevation Upland
Plateau: 760 - 1300 m
T. Benson; 10/98
MALAWI
Nsanje
SalimaADD
Mzimba
Mangochi
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Participatory research and education
IterativeCo-learning
Diagnosis & Systems Analysis Best bets
On-farm research
FarmerCapacity
Better bet options
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Annual Food Legume
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Groundnut
Pigeon pea
Year 1: Doubled Up Legumes
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Year 2: Maize
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LER = 1.35
Unf
ertil
ized
mai
zeFer
t NP
Fer
t NP+M
anur
eG
roun
dnut
DU
L-gr
ound
nut
Pig
eonp
ea
DU
L-pi
geon
pea
Ma
ize
or
leg
um
e g
rain
yie
lds (
Mg
/ha
)
0
1
2
3
4
5
YEAR 1: Sole or doubled-up legumes in maize based systems (4 sites, n=12)
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LER = 1.35
Unf
ertil
ized
mai
zeFer
t NP
Fer
t NP+M
anur
eG
roun
dnut
DU
L-gr
ound
nut
Pig
eonp
ea
DU
L-pi
geon
pea
Ma
ize
or
leg
um
e g
rain
yie
lds (
Mg
/ha
)
0
1
2
3
4
5
YEAR 1: Sole or doubled-up legumes (DUL) with maize
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LER = 1.35
Unf
ertil
ized
mai
zeFer
t NP
Fer
t NP+M
anur
eG
roun
dnut
DU
L-gr
ound
nut
Pig
eonp
ea
DU
L-pi
geon
pea
Ma
ize
or
leg
um
e g
rain
yie
lds (
Mg
/ha
)
0
1
2
3
4
5
Unf
ertil
ized
mai
zeFer
t NP
Fer
t NP+M
anur
e
50%
NP_g
roun
dnut
50%
NP_p
igeo
npea
50%
NP_D
UL
Maiz
e y
ield
s (
Mg/h
a)
0
1
2
3
4
5
DUL
Effect
Year 1
YEAR 2: Rotational effects of sole or doubled-up legumes sequenced
with maize
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Mz+F
ert
Mz+Pp
ea
+Fert
Mz+Co
mp
Mz+Bea
ns
Mz+Gn
uts
PPea+B
eans
PPea+
Gnuts
PPea
+Soy
√ √ √
√ √
√ √
√ √
√ √
√ √
√ √
√ √
√ √
√ √ √ √
√ √ √
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Year 1: Pigeonpea + grain legume
Year 2: Regrowing pigeonpea + Fert. Maize
Year 3: Fertilized Maize
Year 2: Maize intercropped with ratooned
pigeon pea
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COMBINE complementary life forms
Glover et al., 2012
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Pulse plus!
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Africa Research in Sustainable Intensification for the Next Generation
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