Effect of phosphate solubilizing analogue resistant mutants of Azotobacter chroococcum on sorghum


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Authors

  • VIVEK KUMAR
  • S S PUNIA
  • K LAKSHMINARAYAN
  • NEERU NARULA

Keywords:

Azotobacter chroococcum, sorghum, mutants, phosphate solubilization

Abstract

A study was conducted during rainy season (kharif) 1995 on sorghum (Sorghum bicolor (L.) Moench) with phosphate
sOlubilizing Azotobacter chroococcum to observe an interactive effect. Phosphate solubilising analogue resistant
mutants ofAzotobacter chroococcum PS 2, PS 6 and PS 11 showed a positive interactive effect on 'HC 171' sorghum.
Different growth parameters like plant height, number of plants/m row length, green and dry fodder yield increased
significantly by inoculation of different bacterial strains. Three levels of fertilizers were applied control (FLo)' 90 kg
N+ 11 kg P/ha (FLl) and 90 kg N + 26 kg P/ha (FL2). Without inoculation of sorghum seeds with bacteria and fertilizer
level FL2 showed increased yield over control and FL1 with application of P solubilizing A. chroococcum strains there
was no significnt difference on growth parameters at Fl1 and FL2 fertility levels indicating that inoculation of p_
solubilizing Azotobacter strains can reduce fertilizer levels from 26 kg P/ha to 13 kg P/ha.

 

 

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Author Biographies

  • VIVEK KUMAR
    Senior Research Fellow, Department of Microbiology,Chudhary Charan Singh Haryana Agricultural University. Hisar' 125 004
  • S S PUNIA
    Agronomist, Department of Agronomy,Chudhary Charan Singh Haryana Agricultural University. Hisar' 125 004

  • K LAKSHMINARAYAN
    Professor, Department of Microbiology,Chudhary Charan Singh Haryana Agricultural University. Hisar' 125 004

  • NEERU NARULA
    Professor, Department of Microbiology,Chudhary Charan Singh Haryana Agricultural University. Hisar' 125 004

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Issue

Vol. 69 No. 3 (1999)

Section

Articles

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How to Cite

KUMAR, V., PUNIA, S. S., LAKSHMINARAYAN, K., & NARULA, N. (2013). Effect of phosphate solubilizing analogue resistant mutants of Azotobacter chroococcum on sorghum. The Indian Journal of Agricultural Sciences, 69(3). https://epubs.icar.org.in/index.php/IJAgS/article/view/26531