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KMID : 0545120050150040903
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Journal of Microbiology and Biotechnology
2005 Volume.15 No. 4 p.903 ~ p.908
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Effects of Co-Cultures, Containing N-Fixer and P-Solubilizer, on the Growth and Yield of Pearl Millet (Pennisetum glaucum (L.) R. Br.) and Blackgram Vigna mungo L.)
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Poonguzhali S
Madhaiyan M/Thangaraju M/Ryu JH/Chung KY/Sa TM
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Abstract
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Inoculation of the carrier-based mixed bioinoculants of N-fixer (Azospirillum lipoferum strain Az204/Rhizobium strain BMBS P47) and phosphate-solubilizing bacterium (Bacillus megaterium var phosphaticum strain Pb1) promoted growth and yield of pearl millet and blackgram under potculture conditions. The mixed inoculant of Az204 and Pb1 enhanced germination, seedling vigor, plant height, and seed weight, and resulted in 6% increase in grain yield of pearl millet. Likewise, the mixed inoculant of BMBS P47 and Pb1 increased growth, nodulation, and yield in blackgram. The rhizosphere soil enzyme activities, including nitrogenase, urease, and phosphatase, in both pearl millet and blackgram were significantly increased by the inoculation of the mixed inoculant, compared to that of the individual inoculants. The results clearly indicate the beneficial effect of co-culturing the N-fixer and P-solubilizer in inoculants production.
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