ISSN: 0973-7510

E-ISSN: 2581-690X

Suma C. Kammar, Ravindra C. Gundappagol, G.P. Santosh, S. Shubha and M.V. Ravi
Department of Agricultural Microbiology, *Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Raichur – 584 102, India.
J. Pure Appl. Microbiol., 2016, 10 (1): 471-477
© The Author(s). 2016
Received: 16/09/2015 | Accepted: 16/12/2015 | Published: 31/03/2016
Abstract

The systematic survey was made to isolate efficient strains of potassium solubilizing bacteria from different crop plant rhizosphere such as Sorghum, Maize, Bajra, Cotton, Sunflower and Groundnut. A total of 75 isolates were isolated, based on the results obtained from in vitro studies 28 best isolates were selected. The diameter of zone of solubilisation formed by isolates ranged from 0.30 cm to 1.40 cm at 72 hours after incubation. The isolate, KSBD-58 showed maximum solubilisation zone of 1.40 cm, which was followed by KSBR- 41 (1.30 cm). Based on the morphological characterization it was revealed that out of 28 isolates 25 were Bacillus and five were Pseudomonas. With respect to biochemical characterisation all isolates tested positive for catalase, urease and acid production and negative for voger proskauer, denitrification and H2S production test.

Keywords

KSB, Bacillus, Pseudomonas, Fratueuria aurantia.

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© The Author(s) 2016. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.