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INFLUENCE OF PROTOZOA ON THE PROCESS OF NITROGEN FIXATION BY AZOTOBACTER CHROOCOCCUM
Author(s) -
CUTLER D. W.,
BAL D. V.
Publication year - 1926
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1926.tb04295.x
Subject(s) - azotobacter chroococcum , biology , azotobacter , nitrogen fixation , incubation , incubation period , protozoa , nitrogen , mannitol , botany , microbiology and biotechnology , bacteria , biochemistry , horticulture , inoculation , chemistry , genetics , organic chemistry
SUMMARY1 Increased nitrogen fixation by Azotobacter chroococcum in the presence of protozoa, as shown by Nasir, has been confirmed 2 The same effect is found, using soil as a medium. 3 There is a definite relationship between the efficiency of the strain used, the incubation period and the concentration of mannitol employed. 4 The feeding action of Colpidium colpoda and Hartmanella hydlina on Azotobacter has been demonstrated. 5 The reason for increased nitrogen fixation appears to be due to the efficiency of Azotobacter being maintained for a longer period.