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Effect of chemicals on the spread of rice blast disease

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Proceedings / Indian Academy of Sciences

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.

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Authors and Affiliations

  1. Central Rice Research Institute, 753006, Cuttack

    K. V. S. R. Kameswar Row, P. Nayak & Sk. Ahamed Ali

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  1. K. V. S. R. Kameswar Row
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  2. P. Nayak
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  3. Sk. Ahamed Ali
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Row, K.V.S.R.K., Nayak, P. & Ali, S.A. Effect of chemicals on the spread of rice blast disease. Proc. Indian Acad. Sci. 84, 26–30 (1976). https://doi.org/10.1007/BF03045577

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  • DOI: https://doi.org/10.1007/BF03045577

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