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Effect of chemicals on the spread of rice blast disease

  • K. V. S. R. Kameswar Row
  • P. Nayak
  • Sk. Ahamed Ali
Article

Abstract

Twelve fungicides and two antibiotics were tested for their efficacy in controlling the spread of foliar blast and neck blast of rice caused byPyricularia oryzae Cav. in a highly susceptible cultivarCo. 13. The chemical 0-(4-bromo-2, 5-dichlorophenyl) 0-methyl phenylphosphonothioate 34% EC (Leptophos) at a concentration of lml/l of water was found effective in checking the spread of foliar as well as neck infection with a significant increase in yield. There was a negative correlation between yield and neck infection as well as yield and the spread of foliar blast. Yield was observed to be more associated with foliar blast rather than neck blast.

Keywords

Gall Midge Neck Infection Rice Blast Disease Methoxy Ethyl Neck Blast 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Indian Academy of Sciences 1976

Authors and Affiliations

  • K. V. S. R. Kameswar Row
    • 1
  • P. Nayak
    • 1
  • Sk. Ahamed Ali
    • 1
  1. 1.Central Rice Research InstituteCuttack

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