National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Study was conducted to isolate and analyse the plant growth promotional activity of Bacillus strains isolated from Doni river belt of Vijayapura district. Total of 30 isolates were obtained from 15 rhizosphere soil samples. Further all the isolates were subjected for P-solubilization efficiency. All the 30 isolates showed zone of solubilization on Pikovskaya’s media. The zone of solubilization (mm) ranged from 7.2 to 16.00 mm on the petriplate. The amount of Pi released in the media ranged of 4.7 to 13.70 per cent. Out of 30 isolates, only 10 isolates were positive for IAA and GA production. These thirty isolates were subjected for different morphological and biochemical studies. With respect to biochemical characterization, all the isolates showed positive for nitrate reduction, V-P test and oxidase test and negative for acid and gas production, arginine hydrolysis, esterase activity and chitinase activity. Based on the ability of the isolates to solubilise inorganic phosphorous and IAA and GA production, ten of the isolates were taken for pot culture experiment using sorghum as test crop. Under pot culture experiment, the Bacillus strains KJ-1, DWH-1 and HS-1 performed better with respect to plant height, shoot and root dry matter of sorghum.
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