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African Journal of Microbiology Research
Eleven (11) rhizobacteria identified as Azospirillum sp. isolated from the rhizosphere of maize plants grown in Ibadan, Oyo State, Nigeria were evaluated for ammonia production and nitrogen fixation. The micro-Kjeldahl method was used for the screening of the isolates for nitrogen fixation. Nitrogenase activity ranging from 1.20 to 10.60% was detected in seven of the eleven isolates. Results show that treatments with the application of organic fertilizers enhanced bacterial population and alsodoi:10.5897/ajmr2018.8957 fatcat:tdt5ktscjvat7i2dgjkk6fot5q