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ID 53655
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Author
Rashid Mwajita, Mwashasha
Murage, Hunja
Kahangi, Esther M
Abstract
Rice (Oryza sativa L.) is the most important staple food crop in many developing countries, and is ranked third in Kenya after maize and wheat. Continuous cropping without replenishing soil nutrients is a major problem in Kenya resulting to declining soil fertility. The use of chemical fertilizers to avert the problem of low soil fertility is currently limited due to rising costs and environmental concerns. Many soil micro-organisms are able to solubilize the unavailable phosphorus, increase uptake of nitrogen and also synthesize growth promoting hormones including auxin. The aim of this study was to isolate and characterize phyllosphere, rhizoplane and rhizosphere micro-organisms from Kenyan rice with growth promoting habits. In this study whole plant rice samples were collected from different rice growing regions of Kenya. 76.2%, over 80% and 38.5% of the bacterial isolates were positive for phosphate solubilization, nitrogenase activity and IAA production whereas 17.5% and 5% of the fungal isolates were positive for phosphate solubilization and IAA production respectively. Hence these micro-organisms have potential for utilization as bio-fertilizers in rice production.
Keywords
Micro-organisms
Phosphate solubilization
Nitrogen fixation
IAA production
Note
This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Published Date
2013-11-13
Publication Title
SpringerPlus
Volume
volume2
Publisher
Springer International Publishing
Start Page
606
ISSN
2193-1801
Content Type
Journal Article
Official Url
http://dx.doi.org/10.1186/2193-1801-2-606
language
英語
Copyright Holders
© 2013 Mwajita et al.; licensee Springer
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Refereed
True
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