The influence of Azotobacter inoculation on the availability of phosphorus in soil

Abstract

The influence of the two species of Azotohacter (A. chroococcum and A. macrocytogenes), phosphorus, organic matter, and their combinations was examined on available P under laboratory conditions. In all the treatments available P increased upto 20 days and then decreased by the end of 30 days. The release of available P was more on bacterial inoculation with organic matter and or phbsphonis than with inoculation alone, and was more with A. chroococcum than with A. macrocytogenes.