Evaluation of carrier based inoculant of Azotobacter chroococcum strain SDSA-I12/2 in improving growth and yield of summer (ahu) rice cv. IR-36
Author: B. Deb Roy
Author affiliation: Microbiology Laboratory, Department of Life Science, Assam University, Silchar-788011, Assam, India.
Email: : b_deb_roy@sify.com
Supervisors: B. Deb 1 and G. D. Sharma 2
Supervisors affiliation: 1 Microbiology Laboratory, Department of Life Science, Assam University, Silchar-788011, Assam, India.
2 Microbiology Laboratory, Department of Botany, Gurucharan College, Silchar-788004, Assam, India.
Dates: 18 May 2010, Accepted on: 2 June 2010, Published on 13 July 2010
Article type: Biotechnology
Abstract
Plant growth-promoting rhizobacteria (PGPR) are beneficial bacteria that colonize plant roots and enhance plant growth by a wide variety of mechanisms. The use of PGPR is steadily increasing in agriculture and offers an attractive way to replace chemical N fertilizers. Here, one native strain of Azotobacter chroococcum of South Assam, India was used as biofertilizer for summer (ahu) rice cv. IR-36 with different locally available carrier materials to chalk out the best carrier in terms of improving the growth and yield of rice and better survival of the inoculant bacteria. Among different carrier materials used, vermicompost was the best carrier material for the survival of Azotobacter chroococcum as evident from its higher cell count for a period of six months in vermicompost based inoculant. In field level evaluation of carrier based inoculants it was observed that vermicompost based inoculant of Azotobacter chroococcum cells has the most significant effect on improving the growth and yield parameters of summer (ahu) rice cv. IR-36 over the control in acidic soils under water logged condition.
Citation
B. Deb Roy, B. Deb and G. D. Sharma, Evaluation of carrier based inoculant of Azotobacter chroococcum strain SDSA-I12/2 in improving growth and yield of summer (ahu) rice cv. IR-36. Biofrontiers (2010) vol.1, Issue.2: Pg 68-74
| Publisher | Biofrontier Publications |
| ISSN | 0975-4865 |
| Copyright | Author |
| License | Creative Commons Attribution-Noncommercial 3.0 Unported License |
| Full text in PDF |  |
