Population dynamics and identification of efficient strains of Azospirillum in maize ecosystems of Bihar (India).

3 Biotech
Rinkee VermaM N Jha

Abstract

Information on inoculum load and diversity of native microbial community is an important prerequisite for crop management of microbial origin. Azospirillum has a proven role in benefiting the maize (Zea mays) crop in terms of nutrient (nitrogen) supply as well as plant growth enhancement. Bihar state has highest average national maize productivity although fertilizer consumption is minimum, indicating richness of Azospirillum both in terms of population and diversity in soils. An experiment was planned to generate basic information on Azospirillum population variation in maize soils under different agricultural practices and soil types of Bihar, to identify suitable agricultural practices supporting the target microorganism and efficient Azospirillum strain(s). No tillage, growing traditional maize cultivar, land use history (diara soil having history of maize cultivation), soil organic carbon (>1%) and intercrop with oat supported prevalence of Azospirillum in maize rhizosphere. Native Azospirillum population varied from 1 million to 1 billion/g soil under diverse agricultural practices and soil types. Such richness, however, does not necessarily mean that artificial inoculation of Azospirillum is not required in Bihar soils a...Continue Reading

References

Feb 24, 2001·International Journal of Systematic and Evolutionary Microbiology·B EckertA Hartmann
Apr 3, 2002·Current Microbiology·Anil Kumar TripathiDaniel Le Rudulier
May 30, 2002·Microbial Ecology·D.H. Buckley, T.M. Schmidt
Jan 14, 2005·Critical Reviews in Microbiology·Abram Aertsen, Chris W Michiels
May 1, 1995·Applied and Environmental Microbiology·Y BashanS Pedrin

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Citations

Aug 11, 2015·Biochemistry·Rama Reddy Goluguri, Jayant B Udgaonkar

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Methods Mentioned

BETA
acetylene reduction assay

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