Characterization of Associative Microflora of Tamarind and Jack Trees and Inoculation Effect of Biofertilizers on the Growth of Tamarind and Jack Seedlings
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Date
2008-08-14
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University of Agricultural Sciences GKVK, Bangalore
Abstract
The response of tamarind and jack seedlings to microbial
inoculants was studied under nursery conditions during Kharif 2007.
The formation of nodules in tamarind due to indigenous Rhizobium was
screened and the effect of artificial inoculation of Acacia Rhizobium to
induce nodulation in tamarind was studied. It was found that there was
no association of Rhizobium to form nodule either with native soil or by
artificial inoculation.
The combined inoculation of Azotobacter chroococcum+ Bacillus
megaterium + Aculospora laveis showed maximum plant height, stem
girth, number of leaves, root length, fresh weight, dry weight, general
microflora, beneficial microflora and mycorrhizal parameters like percent
root colonization and spore count at all the 4 stages in both tamarind
and jack seedling growth. viz., 30, 60, 90, and 120 Days after sowing
(DAS).
The increased Nitrogen and Phosphorous in tamarind and jack
seedlings was in the treatment of Azotobacter chroococcum + Bacillus
megaterium + Aculospora laveis compared to control.
There was a positive interaction among the introduced microbial
inoculants in improving the seedling growth of both tamarind and jack.
In general, plants treated with combined microbial inoculation gave healthy
seedlings compared to treatment having no microbial inoculation or individual
inoculation.
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