| [species of the genus beijerinckia derx isolated from a soil of corrientes (argentina)]. | four species of bacteria were isolated from one soil of corrientes (argentina). they were first classified as beijerinckia genus based on their cultural, morphological and physiological characteristics. the basic criteria were: growth media without combined nitrogen and fixation of high amounts of gaseous nitrogen (as determined by the acetylene-ethylene assay). further studies permitted the classification of these microorganisms in the following species: beijerinckia indica, beijerinckia flumin ... | 1980 | 6755550 |