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THE EFFICIENCY OF RHIZOSPHERIC BACTERIA IN SOLUBILIZATION OF PHOSPHATE- ZINC UNDER VITRO CONDITIONS | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 21, Issue 1, 2016, Pages 0-0 | ||
| Authors | ||
| K. A. A. Al-Khafaji; S. A. Raheem; A. M. Jwaad | ||
| Abstract | ||
| This research was conducted to determine the ability of rhizospheric bacterial isolates in Phosphate-Zinc solubilizing efficiency. Thirteen different rhizospheric soil samples were collected from North, Middle and South of Iraq. Sixty bacterial isolate were screened for their P- Zn solubilizing ability, twenty four bacterial isolates gave P-solubilizing ability. Different solubilizing efficiencies (SE) and solubilizing indexes (SI) were recognized to reach 600 for SE and7for SI by K8.3 isolate at AYG agar medium. While, pH of broth medium decreased with time to reach 4 after 72 hours for K9.2 bacterialisolate which liberated 312 ppm of soluble inorganic phosphate. Thirteen bacterial isolates were able to solubilize zinc on Ammonium Yeast Glucose agar medium (AYG) agar medium containing Zinc sulfate with halo zone reached 15mm for K6.1 isolate, seven bacterial isolates showed solubilizing ability | ||
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