Management of bakanae disease using fungicides and their effect on disease symptomatology


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Authors

  • BISHNU MAYA BASHYAL Indian Agricultural Research Institute, New Delhi-110012
  • ASHISH KUMAR GUPTA ICAR-National Institute on Plant Biotechnology, New Delhi-110012
  • POOJA PARMAR ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
  • JAGDISH YADAV ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
  • RAVISH CHOUDHARY ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
  • RAVINDRA KUMAR ICAR-Indian Institute of Wheat and Barley Research, Karnal, Haryana
  • DHIRAJ SINGH ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
  • RASHMI AGGARWAL ICAR-Indian Agricultural Research Institute, New Delhi 110012, India

https://doi.org/10.56093/ijas.v92i9.112530

Keywords:

Bakanae, Fungicides, Management, Seedling dip, Symptoms

Abstract

Bakanae disease is an emerging problem of Basmati rice (Oryza sativa L.) in India and most of the basmati rice varieties are susceptible to this disease. Present study was carried out to evaluate and identify effective fungicide against bakanae disease of rice for which 12 fungicides (single and in combination) were evaluated against the bakanae disease as seedling treatments during the rainy (kharif) season of the year 2019 and 2020. Minimum disease incidence was observed with the fungicides Carbendazim 50% wp (19.47%), and Tebuconazole 50% + Trifloxystrobin 25% w/w 75 wg (25.71%) during the years of evaluation with maximum yield. Area under disease progress curve was minimum (621.58) with the treatment of Tebuconazole 50% + Trifloxystrobin 25% w/w 75 wg followed by Carbendazim 50% wp (671.30). Differences in bakanae disease symptoms were observed in different treatments. Among treatments, elongated tillers as major symptoms were observed in Mancozeb 75% wp, Zineb 68% + Hexaconazole 4% and Azoxystrobin 23% sc treated plants. Whereas, tiller elongation with rotting was prominent in Kitazin 48% ec treated and inoculated control plants. In case of Carbendazim 50% wp, Tebuconazole 8% + Captan 32% sc treatments, detachment of tillers was prominent. Therefore, seedling treatment with fungicides was observed to be effective in reducing bakanae disease incidence with low AUDPC and high yield compared to inoculated control.

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References

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Submitted

2021-07-09

Published

2022-09-08

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How to Cite

BASHYAL, B. M., GUPTA, A. K., PARMAR, P., YADAV, J., CHOUDHARY, R., KUMAR, R., SINGH, D., & AGGARWAL, R. (2022). Management of bakanae disease using fungicides and their effect on disease symptomatology. The Indian Journal of Agricultural Sciences, 92(9), 1096–1100. https://doi.org/10.56093/ijas.v92i9.112530
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