Response of micro-dense bean varieties to fertility and water harvesting technologies in the semi-arid areas of eastern Kenya
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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
- 5. Treatments Open furrows tied ridges flat ground cattle manure at 0 and 5 tons/ha
- 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%
- 8. Results cont. Effect of water harvesting and manure on bean genotypes in short rains 2011.
- 9. • Water harvesting and manure increased KAT B 1, NUA 1, and NUA 4 in SR 2011 grain yields by 41%, 61%, and 34% respectively.
- 10. Effect of water harvesting and manure on bean genotypes in the long rains season 2012
- 11. Results cont. • In LR 2012, bean grain yields for KAT B 1, NUA 1, and NUA 4 increased by 26%, 64% and 44% respectively.
- 12. Effect of water harvesting and manure on three bean genotypes in short and long rains 2011 and 2012.
- 13. Leaf Zn
- 14. Fe leaf analysis
- 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
- 16. Way forward • Recommendations • Grain Fe and Zn analysis