azotobacter

plural azotobacters · alternative Azotobacter

1. countableuncountableAny of various nitrogen-fixing bacteria in the genus Azotobacter.

   It is therefore not surprising that azotobacters, introduced into soils of unwatered crops in semi-arid zones will die out rather rapidly.

   1966 [1955], Ye. N. Mishustin, Soil Microbiology and its Current Problems, National Aeronautics and Space Administration, translation of Pochvennaya mikrobiologiya i yeye ocherednyye zadachi, page 18

   3 more examples

   I believe, and this belief is based upon tentative facts, that the azotobacter are at the same time nitrifiers, i. e., that they possess a double function

   1914 September 11, William Headden, “Do Azotobacter Nitrify?”, in Science, volume XL, number 1028, page 380

   Investigations in this laboratory have shown that the presence or absence of Azotobacter in natural soils is very closely associated with, if not dependent upon, the absolute reaction of the soil solution

   1923 June 2, P.L. Gainey, “Influence of the hydrogen-ion concentration on the growth and fixation of nitrogen by cultures of Azotobacter”, in Journal Of Agriculture Research, volume XXIV, number 9, page 759

   They are usually motile, oval or spherical bacteria that form thick-walled cysts and may produce large quantities of capsular slime. Azotobacter is found in slightly acidic (A. beijerinckii) to neutral alkaline (A. chroococcum) soil.

   2021, Ajar Nath Yadav, Khem Singh Gill, Production Technology for Bioagents and Biofertilizers, Eternal University