Potassium mobilization and plant growth promotion by soil bacteria isolated from different agroclimatic zones of Odisha, India


  • Aiswarya PANDA Odisha University of Agriculture and Technology, India
  • Ankita DASH Department of Microbiology, College of Basic Science and Humanities, OUAT., India
  • Bibhuti Bhusan MISHRA Department of Microbiology, College of Basic Science and Humanities, OUAT., India




soil, potash mobilizing bacteria, plant growth promoting rhizobacteria, soil potassium, potassium availability


Potassium is essential for plant metabolism; improves immunity to stress and increase crop productivity. Soil contains insoluble form of potassium, which is unavailable for plant absorption. Potash mobilizing bacteria (KMB) solubilise complex potassium and make it available to plant. KMB with plant growth promoting (PGP) traits could enhance growth and crop productivity. Here we attempt to screen KMBs with PGP traits from different agroclimatic zones of Odisha and study dynamics of potassium in soil. Isolation of KMB and determination of PGP traits was performed with standard protocols. Pot culture experiment was aimed to study their effect on sunflower crop. Available soil potassium was quantified using inductively coupled plasma-optical emission spectrometry (ICP-OES). Thirty KMBs were isolated from different agro-climatic zones of Odisha, out of which 6 isolates exhibited maximum PGP traits. Moreover, after adding inoculums the available soil potassium decreased over 0 to 30 days as compared to control, with increase in shoot length. T7 (consortium) reported maximum (144 %) increase in shoot length. Available soil potassium content decreased with increase in time. A maximum decrease was reported in T7 (26.31 %), suggesting potassium accumulation by plant.

Author Biography

  • Aiswarya PANDA, Odisha University of Agriculture and Technology, India

    Ph.D Research Scholar

    Department of Microbiology, College of Basic Science and Humanities, OUAT.


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10. 11. 2021



Original Scientific Article

How to Cite

PANDA, A., DASH, A., & MISHRA, B. B. (2021). Potassium mobilization and plant growth promotion by soil bacteria isolated from different agroclimatic zones of Odisha, India. Acta Agriculturae Slovenica, 117(3), 1–14. https://doi.org/10.14720/aas.2021.117.3.1794

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