< b></b> A large number of different microorganisms a... more < b></b> A large number of different microorganisms are commonly found in the soil including bacteria, fungi, actinomycetes, protozoa and algae of these bacteria are by far the most common type of soil microorganism possibly because they can grow rapidly and have the ability to utilize a wide range of substances as either carbon or nitrogen sources. Use of naturally occurring, free living bacterial species, which can protect and promote plant growth by colonizing and multiplying along the surface of the root and/or root cortex. In our ...
Journal of Pure and Applied Microbiology, Dec 25, 2013
"A total of one hundred and fifty rhizospheric soil samples were collected from
the different ve... more "A total of one hundred and fifty rhizospheric soil samples were collected from
the different vegetable (tomato, egg plant, chilli) growing fields in and around Namakkal
district, Tamil Nadu, India. Ten isolates of Azotobacter sp. were isolated from the
rhizospheric soils of vegetable plants using Jenson’s and Ashby’s mannitol selective media.
The isolated Azotobacter strains were characterized and identified based on morphological
and biochemical characteristics. Multiple plant growth promoting activities of Azotobacter
isolates were determined in terms of IAA production, NH3 release, PO4 solubilization,
HCN and siderophore production. IAA production of the Azotobacter isolates were
tryptophan concentration dependent. Most of the Azotobacter isolates were tolerant to
zinc and mercury concentration of 100-200 μg/ml. Antifungal activity of the Azotobacter
was determined against Aspergillus flavus, Cercospora sp. and Fusarium oxysporum
and found higher zone of inhibition (18-26 mm) at higher concentration of culture
suspension."
< b></b> A large number of different microorganisms a... more < b></b> A large number of different microorganisms are commonly found in the soil including bacteria, fungi, actinomycetes, protozoa and algae of these bacteria are by far the most common type of soil microorganism possibly because they can grow rapidly and have the ability to utilize a wide range of substances as either carbon or nitrogen sources. Use of naturally occurring, free living bacterial species, which can protect and promote plant growth by colonizing and multiplying along the surface of the root and/or root cortex. In our ...
Journal of Pure and Applied Microbiology, Dec 25, 2013
"A total of one hundred and fifty rhizospheric soil samples were collected from
the different ve... more "A total of one hundred and fifty rhizospheric soil samples were collected from
the different vegetable (tomato, egg plant, chilli) growing fields in and around Namakkal
district, Tamil Nadu, India. Ten isolates of Azotobacter sp. were isolated from the
rhizospheric soils of vegetable plants using Jenson’s and Ashby’s mannitol selective media.
The isolated Azotobacter strains were characterized and identified based on morphological
and biochemical characteristics. Multiple plant growth promoting activities of Azotobacter
isolates were determined in terms of IAA production, NH3 release, PO4 solubilization,
HCN and siderophore production. IAA production of the Azotobacter isolates were
tryptophan concentration dependent. Most of the Azotobacter isolates were tolerant to
zinc and mercury concentration of 100-200 μg/ml. Antifungal activity of the Azotobacter
was determined against Aspergillus flavus, Cercospora sp. and Fusarium oxysporum
and found higher zone of inhibition (18-26 mm) at higher concentration of culture
suspension."
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Papers by Karuppiah Ponmurugan
the different vegetable (tomato, egg plant, chilli) growing fields in and around Namakkal
district, Tamil Nadu, India. Ten isolates of Azotobacter sp. were isolated from the
rhizospheric soils of vegetable plants using Jenson’s and Ashby’s mannitol selective media.
The isolated Azotobacter strains were characterized and identified based on morphological
and biochemical characteristics. Multiple plant growth promoting activities of Azotobacter
isolates were determined in terms of IAA production, NH3 release, PO4 solubilization,
HCN and siderophore production. IAA production of the Azotobacter isolates were
tryptophan concentration dependent. Most of the Azotobacter isolates were tolerant to
zinc and mercury concentration of 100-200 μg/ml. Antifungal activity of the Azotobacter
was determined against Aspergillus flavus, Cercospora sp. and Fusarium oxysporum
and found higher zone of inhibition (18-26 mm) at higher concentration of culture
suspension."
the different vegetable (tomato, egg plant, chilli) growing fields in and around Namakkal
district, Tamil Nadu, India. Ten isolates of Azotobacter sp. were isolated from the
rhizospheric soils of vegetable plants using Jenson’s and Ashby’s mannitol selective media.
The isolated Azotobacter strains were characterized and identified based on morphological
and biochemical characteristics. Multiple plant growth promoting activities of Azotobacter
isolates were determined in terms of IAA production, NH3 release, PO4 solubilization,
HCN and siderophore production. IAA production of the Azotobacter isolates were
tryptophan concentration dependent. Most of the Azotobacter isolates were tolerant to
zinc and mercury concentration of 100-200 μg/ml. Antifungal activity of the Azotobacter
was determined against Aspergillus flavus, Cercospora sp. and Fusarium oxysporum
and found higher zone of inhibition (18-26 mm) at higher concentration of culture
suspension."