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Rhizobium japonicum as a biocontrol agent of soybean root rot disease caused by Fusarium solani and Macrophomina phaseolina

Author

Listed:
  • Rakib A. Al-Ani

    (Plant Protection Department, College of Agriculture and)

  • Mustafa A. Adhab

    (Plant Protection Department, College of Agriculture and)

  • Majda H. Mahdi

    (Department of Biology, College of Science, University of Baghdad, Baghdad, Iraq)

  • Hadi M. Abood

    (Ministry of Sciences and Technology, Baghdad, Iraq$2)

Abstract

The activity of Rhizobium japonicum against the soil-borne pathogens Fusarium solani and Macrophomina phaseolina as causative agents of soybean root rot disease in both culture medium and soil was evaluated. Rhizobial culture filtrate caused an inhibition of the fungal radial growth of Fusarium solani and Macrophomina phaseolina on potato dextrose agar medium amended with the filtrate compared with control. The addition of rhizobial culture suspension to the soil contaminated by the two pathogens, Fusarium solani and Macrophomina phaseolina and their interaction, in pots, improved seed germination percentages and reduced the root rot disease index significantly. The sowing of rhizobial coated seeds in soil contaminated by Fusarium solani and Macrophomina phaseolina separately and in combination, in the field, increased seed germination significantly and induced a high reduction in disease severity for the same previous combination under field conditions. These results indicate that rhizobia could be an important element in root rot disease management.

Suggested Citation

  • Rakib A. Al-Ani & Mustafa A. Adhab & Majda H. Mahdi & Hadi M. Abood, 2012. "Rhizobium japonicum as a biocontrol agent of soybean root rot disease caused by Fusarium solani and Macrophomina phaseolina," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 48(4), pages 149-155.
    • Handle: RePEc:caa:jnlpps:v:48:y:2012:i:4:id:16-2012-pps
    DOI: 10.17221/16/2012-PPS
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    References listed on IDEAS

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    1. Karel Veverka & Jana Palicová & Iva Křížková, 2008. "The incidence and spreading of Macrophomina phaseolina(Tassi) Goidanovich on sunflower in the Czech Republic," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 44(4), pages 127-137.
    2. Mohamed A. S. El-Bramawy & Omar A. Abdul Wahid, 2006. "Field resistance of crosses of sesame (Sesamum indicum L.) to charcoal root rot caused by Macrophomina phaseolina (Tassi.) Goid," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 42(2), pages 66-72.
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