Efficacy of a simple liquid culture of <i>Bacillus megaterium</i> in suppressing grain discoloration disease of rice (<i>Oryza sativa</i>)

  • M. Kanjanamaneesathian Faculty of Animal Science and Agricultural Technology, Silpakorn University, Phetchaburi IT campus, Cha-Am, Phetchaburi, 76120, Thailand
  • P. Meetum Faculty of Animal Science and Agricultural Technology, Silpakorn University, Phetchaburi IT campus, Cha-Am, Phetchaburi, 76120, Thailand
Keywords: biological control, dirty panicles of rice

Abstract

Grain discoloration (GD) of rice (Oryza sativa) is a disease complex that occurs on rice panicles as a result of infection by various fungi. Bacillus megaterium, a bacterial antagonist that is effective against sheath blight of rice, was cultured using either nutrient broth, potato dextrose broth or a common household flavour enhancer. Preliminary data from a single experiment suggested that all three cultures supported growth of the bacterium. Spraying diluted bacterial nutrient-broth culture onto rice (var. RD 31) three times (41, 84 and 96 days after transplanting) reduced the mean severity of GD as a result of the field trials from three consecutive growing seasons. The spray did not affect the percentage germination of the rice seeds after they had been stored for three months in the laboratory at room temperature (26ºC–32ºC).

Published
2017-07-24
How to Cite
Kanjanamaneesathian, M., & Meetum, P. (2017). Efficacy of a simple liquid culture of <i>Bacillus megaterium</i> in suppressing grain discoloration disease of rice (<i>Oryza sativa</i&gt;). New Zealand Plant Protection, 70, 196-202. Retrieved from http://journal.nzpps.org/index.php/nzpp/article/view/49
Section
Vol 70 Rice & Blueberry Pathology 2017