Presented by S.N. Nguluu, D.R. Karanja, D. Macharia, J. Karanja, J. Kavoi, , Mwangi Gatheru at the First Bio-Innovate Regional Scientific Conference, Addis Ababa, Ethiopia, 25-27 February 2013
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Response of micro-dense bean varieties to fertility and water harvesting technologies in the semi-arid areas of eastern Kenya
1. Response of micro-dense bean varieties to
fertility and water harvesting technologies in
the semi-arid areas of eastern Kenya
S.N. Nguluu, D.R. Karanja, D. Macharia, J. Karanja, J. Kavoi, , Mwangi Gatheru
First Bio-Innovate Regional Scientific Conference
United Nations Conference Centre (UNCC-ECA)
Addis Ababa, Ethiopia, 25-27 February 2013
2. Justification
• Moisture stress is major constraint within and
among seasons
• Integrated soil fertility research not done on
micro-dense genotypes (Knowledge gap)
• Bean yields on farm 90-150 kg/ha in SR 2011
and LR 2012.
• Hence trial conducted in short rains 2011 and
long rains 2012
3. Objective of the experiment
To determine the effect of water harvesting
techniques and organic amendments on grain
yield and Fe and Zn concentration of three
market preferred bean genotypes; namely:
Katumani bean 1, NUA 1 and NUA 4.
4. Reason for the experiment
• Harvest the water to increase yields and
provide solution for food insecurity and low
incomes
• Reduce soil degradation by increasing
nutrient depletion
6. Results-overall effect of water
harvesting and manure on
grain yields
T=tied rigdes,TM=tied with manure=open furrow,
OM=open with manure, F=flat, FM=flat with manure
7. Results cont.
• Water harvesting and manure In SR rains
increased grain yields by 34-47 %
• Water harvesting and manure in the LR
2012 increased bean grain yields by 39-
68%
15. Acknowledgements
• Bioinnovate-Sida for financing the project
• Director KARI for supporting us to carry
out the work
• NCPD-CLUSA NGO for farmer
mobilization when disseminating the
technologies
• Provincial Administration for farmers
mobilisation to visit trials
• Technical assistants KARI-Katumani