Yield and nutritive value of legume residues:
Effects of genotypes/harvesting stage
Mesfin Dejene
ILRI-PhD student,
The University of Queensland, Australia.
ILRI-N2Africa
Annual Planning & Public-Private Partnership (PPP) Validation Workshop
21-23 January 2015
ILRI Campus, Addis Ababa, Ethiopia
Putting nitrogen fixation to work for smallholder farmers in Africa
Laboratory quality and yield related traits
of some grain legume genotypes, Ethiopia
 Outline
 Grain legumes tested during 2013/14: Quality traits




Common bean: 9 genotypes
Chickpea: 9 genotypes
Faba bean: 9 genotypes &
Soybean: 6 genotypes with three replications
 Grain legumes tested during 2014/15: Yield traits



4 Kabuli type chickpea genotypes
4 Dessi type chickpea genotypes &
3 Faba bean genotypes with 4 replications
Putting nitrogen fixation to work for smallholder farmers in Africa
Range in total nitrogen (N) concentration (%) of CRs
of some grain legume genotypes in Ethiopia during 2013/14
2.5
Total nitrogen (N), %
2
1.5
Husk N_Min
Husk N_Max
Straw N_Min
Straw N_Max
1
0.5
0
Common
Faba bean
Chickpea
Soybean
bean (9
(9 genotypes) (9 genotypes) (6 genotypes)
genotypes)
Grain legume genotypes
Putting nitrogen fixation to work for smallholder farmers in Africa
Dry matter digestibility (DMD), %
Range in Dry matter digestibility (DMD), % of CRs of
some grain legume genotypes in Ethiopia during 2013/14
80
70
60
50
40
Husk DMD_Min
30
20
Husk DMD_Max
10
Straw DMD_Min
0
Common
Faba bean
Chickpea
Soybean
bean (9 (9 genotypes) (9 genotypes) (6 genotypes)
genotypes)
Grain Legume genotypes
Putting nitrogen fixation to work for smallholder farmers in Africa
Straw DMD_Max
Effect of genotypes on yield related traits
of chickpea: Kabuli and Dessi type
Dessi type
Kabuli type
Putting nitrogen fixation to work for smallholder farmers in Africa
Yield (g/plant), L:S ratio (%) & 100 seed Wt (g)
Effect of genotypes on yield related traits
of chickpea: 1. Kabuli type
80.0
Range in seed and residue yield (g/plant) of selected
chickpea genotypes (KABULI) in Ethiopia during 2014/15
70.0
60.0
DZ-2012-ck-0002
50.0
Habru
40.0
Ejere
30.0
Arerti
20.0
Min
10.0
Max
0.0
Yield related traits
Putting nitrogen fixation to work for smallholder farmers in Africa
80.0
Range in seed and residue yield (g/plant) of selected
chickpea genotypes (DESSI) in Ethiopia during 2014/15
70.0
DZ-2012-ck-0031
60.0
Dalota
50.0
Minjar
Natoli
40.0
Min
30.0
Max
20.0
10.0
100 seed
wt, g
Whole
Straw
Yield
Putting nitrogen fixation to work for smallholder farmers in Africa
Leaf:Stem,
%
Yield related traits
Whoplant
Yield
Seed yield
Husk yield
Stem yield
0.0
Leaf Yield
Yield (g/plant), L:S ratio (%) & 100 seed Wt (g)
Effect of genotypes on yield related traits
of chickpea: 2. Dessi type
Effect of harvesting stages on yield related
traits of chick pea genotypes
Harvesting at
green stage
Putting nitrogen fixation to work for smallholder farmers in Africa
Yield (g/plant), L:S ratio (%) & 100 seed Wt (g)
Effect of harvesting stages on yield related
traits of Kabuli type chick pea genotypes
70.0
Seed and residue yield (g/plant) of selected chickpea genotypes
(KABULI) in Ethiopia during 2014/15 : Effect of harvesting stages
60.0
50.0
Green Veg
95 % maturity
40.0
After maturity
30.0
20.0
10.0
0.0
Leaf Yield Stem yield Husk yield Seed yield WholepltYld WholeStYld
Yield related traits
Putting nitrogen fixation to work for smallholder farmers in Africa
L:S, %
100seed
wt, g
Yield (g/plant), L:S ratio (%) & 100 seed Wt (g)
Effect of harvesting stages on yield related
traits of Dessi type chick pea genotypes
Seed and residue yield (g/plant) of selected chickpea genotypes
(DESSI) in Ethiopia during 2014/15 : Effect of harvesting stages
70.0
60.0
Green Veg
50.0
40.0
95 % maturity
After maturity
30.0
20.0
10.0
0.0
Leaf Yield Stem yield Husk yield
Seed yield WholepltYld WholeStYld
Yield related traits
Putting nitrogen fixation to work for smallholder farmers in Africa
L:S, %
100seed
wt, g
Results and implications
 There were substantial ranges in laboratory quality and
yield related traits between botanical fractions of legume
residues and among genotypes.
 The preliminary result implies there is considerable
potential to increase feed N supply through choice of
legume variety and appropriate harvesting stage in croplivestock systems of Ethiopia.
 Optimum utilization of whole plant value needs to be
considered
Putting nitrogen fixation to work for smallholder farmers in Africa
Putting nitrogen fixation to work for smallholder farmers in Africa