OARI progress report on N2Africa bridging year in Ethiopia (2013)
1. በሀዋሳ ዩኒቨርሰቲ የም
ጋር በመተ
HAWASSA UN
DIRECTOR
OARI progress report on N2Africa bridging
year in Ethiopia (2013)
Putting nitrogen fixation to work for smallholder farmers in Africa
Zerihun Abebe, OARI
N2Africa Ethiopia Launch Workshop, ILRI
27-28 February 2014
6. Common bean was significantly responded to the inputs
Nasir variety more responded to +P and R+ than Anger
Common Diss/Demo trials at Bako Tibe district,2013
34%
144%
7. 0
500
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3500
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1.50 2.00 2.50 3.00
Nasir(-P+ -R)
Nasir(+P+ +R)
Anger (-P+ -R)
Anger(+P+ +R)
Organic carbon(%)
Grainyield(kg/ha)
OC has +ve correlation with Grain yield
0
500
1000
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3500
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0 2 4 6 8 10
Nasir(-P+ -R)
Nasir(+P+ +R)
Anger (-P+ -R)
Anger(+P+ +R)
Available P(mg kg-1)
Grainyield(kg)
P has linear correlation with yield
Soil Organic carbon and available P correlated with yield
Thus, improvement of the soil carbon and pH are crucial
23. CHALLENGES
Critical shortage of vehicle
Shortage of training (long and short)
Problem of soybean value chain
Extreme variability in soil fertility ( 80% farm field is <
5 pH of soil)
Mono cropping practices
Serious disease problem ( Chocolate spot of FB)
Inefficient inoculants on FB
Un adequate and untimely budget release
Untimely start of the project ( late planting)
24. LESSON LERNT
inoculants are promising in enhancing bean
yield
Yield variability across the farmers’ field is high
Both P and inoculants are important for common
bean, but P rate is low
Different CB,FB and SB varieties respond
differently, best varieties were identified
OC and available P are +vely correlated with
bean yield ( improvement is important)
Soil acidity management is critical issue
Farmers were aware to use inoculants
25. Way forward for 2014
Early start and procurement of the input
materials as much as possible
Further scaling up
Issue of soil acidity management
Revision of P application rates
Strengthen approaches of scaling up( e.g
innovation plot form)
Focus on value chains for soybean
Improving soil OC
Focus for FB disease and compatible inoculants