id	keyword
bioscience-221	azotobacter
bioscience-221	activity
bioscience-221	strains
bioscience-221	screening
bioscience-221	solubilizing
bioscience-221	bacteria
bioscience-221	nitrogen
bioscience-221	phosphate
bioscience-221	water
bioscience-221	figure
bioscience-221	isolates
bioscience-221	plant
bioscience-221	soil
bioscience-221	zone