Abundance and Symbiotic Rhizobia Colonizing Soybean (Glycine max) in Soils of Kakamega County, Western Kenya

Identification of effective indigenous rhizobia strain nodulating soybean (Glycine max) was conducted in Kakamega County, Western Kenya. This study was carried out to establish the abundance and symbiotic efficiency of native rhizobia strains in soil samples collected from 12 sites in four agroecolo...

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Bibliographic Details
Published in:International journal of agronomy 2021, Vol.2021, p.1-7
Main Authors: Mulama, Samuel, Onamu, Rose, Odongo, Fredrick, Muoma, John
Format: Article
Language:English
Subjects:
Abundance
Bacteria
Data collection
Efficiency
Enumeration
Farmers
Glycine max
Inoculation
Laboratories
Legumes
Nitrogen
Seeds
Soil chemistry
Soil conditions
Soil pH
Soils
Soybeans
Variance analysis
Vermiculite
Weight
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Summary:Identification of effective indigenous rhizobia strain nodulating soybean (Glycine max) was conducted in Kakamega County, Western Kenya. This study was carried out to establish the abundance and symbiotic efficiency of native rhizobia strains in soil samples collected from 12 sites in four agroecological zones within the region. The MPN enumeration technique was used to estimate the indigenous rhizobia numbers and showed that 54% of the sampled sites had high abundance. Rhizobia number in the soil collected from the six regions varied from 2.5 × 102 to 3.12 × 103 cells·g− soil. Thirty isolates from the soil collected in the four regions were tested for efficiency using soybean as the trap plant in Leonard jars containing sterilized vermiculite irrigated with nitrogen-free media. Determination of the relationship between rhizobial abundance and symbiotic efficiency with respect to the soil chemical conditions was performed using ANOVA, and the means were compared using Tukey’s honest significant difference test. Inoculation with bacterial isolates significantly (P
ISSN:1687-8159
1687-8167
DOI:10.1155/2021/6627541