a total of 32 strains of azospirillum mainly isolated from rhizosphere of grasses and soils of argentina were examined for susceptibility to 9 antimicrobial agents ( trimethoprim , ampicillin , carbenicillin , streptomycin , spectinomycin , chloramphenicol , kanamycin , nalidixic acid and tetracycline ) .
C1136254
antimicrobial agents
C0039644
tetracycline