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Agricultural Science Digest, volume 22 issue 2 (june 2002) : 71 - 74

INTERACTIVE EFFECT OF RHiZOBIUMAND PHOSPHATE SOLUBILIZING MICRO-ORGANISMS ON THE SOLUBILIZATION OF INSOLUBLE PHOSPHATE

M.K. Tyagi, C.P. Singh·, N.L. Sharma"

Affiliations

¹Regional Biofertilizer Development Centre, Ministry of Agriculture, Govt. of India, Adhartal, Jabalpur - 482 004, India

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Cite article:- Tyagi M.K., Singh· C.P., Sharma" N.L. (2024). INTERACTIVE EFFECT OF RHiZOBIUMAND PHOSPHATE SOLUBILIZING MICRO-ORGANISMS ON THE SOLUBILIZATION OF INSOLUBLE PHOSPHATE. Agricultural Science Digest. 22(2): 71 - 74. doi: .

ABSTRACT

Interactive effect of two strains of pea rhizobia and phosphate solubilizing microorganisms (PSM) on their survival and their effect on phosphate of insoluble phosphate was studied under mixed single inoculum culture using Pikovskaya's and Nutrient agar containing tricalcium phosphate (TCP) medium. The total viable counts of Rhizobium strains increased upto 3 days, while, phosphate solubilizing microorganisms (PSM) was increased upto 7 days. Pea Rhizobium strains PR6300 grew well in Pikovskaya medium and had higher viable coUnts than nutrient agar medium. The combination of Rhizobium PR6300 and Bacilius polymyxa, BP411 has showed the highest viable counts in Pikovskaya medium. The other combination having Aspergillus awamorishowed antagonistic effect on the growth of both rhizobial strains (PR6300 and PR6301). The maximum solubilization of insoluble P accompained with the highest downfall in pH was recorded 7 days withAspergillus awamori inoculation alone on Pikovskaya medium. Pikovskaya medium supported the growth of pea Rhizobium strain PR6300 as well as PSM bacterium BP411 with the highest viable counts upto 7 days of inoculation.

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REFERENCES

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INTERACTIVE EFFECT OF RHiZOBIUMAND PHOSPHATE SOLUBILIZING MICRO-ORGANISMS ON THE SOLUBILIZATION OF INSOLUBLE PHOSPHATE

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