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Commercial rhizobial inoculants significantly enhance growth and nitrogen fixation of a promiscuous soybean variety in Kenyan soils

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Title Commercial rhizobial inoculants significantly enhance growth and nitrogen fixation of a promiscuous soybean variety in Kenyan soils
 
Creator Thuita, Moses N.
Pypers, Pieter
Herrmann, Laetitia
Okalebo, Robert John
Othieno, Caleb
Muema, Esther
Lesueur, Didier
 
Description Low effectiveness of native strains remains a limitation to soybean productivity in sub-Saharan Africa; while in other countries commercial inoculants are produced that provide effective strains that stimulate N fixation and growth. An experiment was set up to evaluate the response of a dual purpose promiscuous soybean variety (TGx1740-2F) and a non-promiscuous variety (Nyala) to commercial rhizobium inoculants in soils from central and coastal Kenya. Highest nodulation was observed in some of the treatments with commercial inoculants applied with nodule weights of 4.5 and 1.0 g plant?1 for TGx1740-2F and Nyala, respectively. Average biomass yields of TGx1740-2F (16 g plant?1) were twice as large as of Nyala (7.5 g plant?1) at the podding stage. Nitrogen fixation was higher in TGx1740-2F than in Nyala, and positively affected by a number of commercial inoculants with more than 50% N derived from the atmosphere. Nodule occupancy was 100% on both soybean varieties, indicating that the commercial strains were extremely infective in both of the tested soils. These results showed that commercial strains can be used to inoculate promiscuous soybean and enhance N fixation and yield.
 
Date 2012-01
2014-09-24T08:41:53Z
2014-09-24T08:41:53Z
 
Type Journal Article
 
Identifier Thuita, Moses N.; Pypers, Pieter; Herrmann, Laetitia; Okalebo, Robert John; Othieno, Caleb O.; Muenchau, D.; Lesueur, Didier. 2012. Commercial rhizobial inoculants significantly enhance growth and nitrogen fixation of a promiscuous soybean variety in Kenyan soils . Biology and Fertility of Soils (German) 48(1):87-96.
1432-0789
https://hdl.handle.net/10568/43275
https://doi.org/10.1007/s00374-011-0611-z
 
Language en
 
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Limited Access
 
Publisher Springer Science and Business Media LLC
 
Source Biology and Fertility of Soils