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Management of Septoria Tritici Blotch (Septoria tritici) of Bread Wheat (Triticum aestivum L.) in the Central Highlands of Ethiopia

Received: 25 December 2018     Accepted: 21 March 2019     Published: 13 April 2019
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Abstract

Septoria tritici blotch (STB) is an economically important foliar disease in the major wheat-growing areas of Ethiopia. The current research was conducted to determine the impact of wheat varieties and fungicides on disease development and wheat yield. Besides, the effect of bread wheat varieties and fungicides on STB development, wheat yield was evaluated at Holleta and Kulumsa in a factorial field experiment involving three bread wheat varieties and six fungicide spray schedules. At Holetta, variety Kekeba had the highest AUDPC (2548) value followed by Madawalabu and Alidoro; whereas at Kulumsa the highest AUDPC (1509) was recorded on variety Madawalabu followed by Alidoro and Kekeba varieties. STB incidence and severity were significantly reduced by the application of fungicides across varieties but fungicide-variety combinations had differential effects on disease development. Wheat grain yields were the lowest from unsprayed plots regardless of variety and location. Kekeba variety treated with Mancozeb-Tilt-Mancozeb-Tilt (MTMT) fungicide combination produced the highest yield (5.05t/ha). The highest (577.31%) and lowest (-19.95%) marginal rate of return were obtained from Tilt and MTMT sprayed fields at Holetta planted with Kekeba and Madawalabu varieties, respectively. On the other hand, at Kulumsa, the highest marginal rate of return (886.88%) and the lowest marginal rate of return (-63.98%) was obtained from Tilt and Mancozeb sprays on Madawalabu and Alidoro varieties, respectively. The present findings confirmed the importance of STB in Ethiopia and the role fungicides play in managing the disease on partially resistant varieties.

Published in International Journal of Ecotoxicology and Ecobiology (Volume 4, Issue 1)
DOI 10.11648/j.ijee.20190401.14
Page(s) 32-41
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

AUDPC, Bread Wheat, Cost-benefit Analysis, Septoria Tritici Blotch

References
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  • APA Style

    Yitagesu Tadesse, Alemayehu Chala, Bekele Kassa. (2019). Management of Septoria Tritici Blotch (Septoria tritici) of Bread Wheat (Triticum aestivum L.) in the Central Highlands of Ethiopia. International Journal of Ecotoxicology and Ecobiology, 4(1), 32-41. https://doi.org/10.11648/j.ijee.20190401.14

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    ACS Style

    Yitagesu Tadesse; Alemayehu Chala; Bekele Kassa. Management of Septoria Tritici Blotch (Septoria tritici) of Bread Wheat (Triticum aestivum L.) in the Central Highlands of Ethiopia. Int. J. Ecotoxicol. Ecobiol. 2019, 4(1), 32-41. doi: 10.11648/j.ijee.20190401.14

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    AMA Style

    Yitagesu Tadesse, Alemayehu Chala, Bekele Kassa. Management of Septoria Tritici Blotch (Septoria tritici) of Bread Wheat (Triticum aestivum L.) in the Central Highlands of Ethiopia. Int J Ecotoxicol Ecobiol. 2019;4(1):32-41. doi: 10.11648/j.ijee.20190401.14

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  • @article{10.11648/j.ijee.20190401.14,
      author = {Yitagesu Tadesse and Alemayehu Chala and Bekele Kassa},
      title = {Management of Septoria Tritici Blotch (Septoria tritici) of Bread Wheat (Triticum aestivum L.) in the Central Highlands of Ethiopia},
      journal = {International Journal of Ecotoxicology and Ecobiology},
      volume = {4},
      number = {1},
      pages = {32-41},
      doi = {10.11648/j.ijee.20190401.14},
      url = {https://doi.org/10.11648/j.ijee.20190401.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijee.20190401.14},
      abstract = {Septoria tritici blotch (STB) is an economically important foliar disease in the major wheat-growing areas of Ethiopia. The current research was conducted to determine the impact of wheat varieties and fungicides on disease development and wheat yield. Besides, the effect of bread wheat varieties and fungicides on STB development, wheat yield was evaluated at Holleta and Kulumsa in a factorial field experiment involving three bread wheat varieties and six fungicide spray schedules. At Holetta, variety Kekeba had the highest AUDPC (2548) value followed by Madawalabu and Alidoro; whereas at Kulumsa the highest AUDPC (1509) was recorded on variety Madawalabu followed by Alidoro and Kekeba varieties. STB incidence and severity were significantly reduced by the application of fungicides across varieties but fungicide-variety combinations had differential effects on disease development. Wheat grain yields were the lowest from unsprayed plots regardless of variety and location. Kekeba variety treated with Mancozeb-Tilt-Mancozeb-Tilt (MTMT) fungicide combination produced the highest yield (5.05t/ha). The highest (577.31%) and lowest (-19.95%) marginal rate of return were obtained from Tilt and MTMT sprayed fields at Holetta planted with Kekeba and Madawalabu varieties, respectively. On the other hand, at Kulumsa, the highest marginal rate of return (886.88%) and the lowest marginal rate of return (-63.98%) was obtained from Tilt and Mancozeb sprays on Madawalabu and Alidoro varieties, respectively. The present findings confirmed the importance of STB in Ethiopia and the role fungicides play in managing the disease on partially resistant varieties.},
     year = {2019}
    }
    

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    AB  - Septoria tritici blotch (STB) is an economically important foliar disease in the major wheat-growing areas of Ethiopia. The current research was conducted to determine the impact of wheat varieties and fungicides on disease development and wheat yield. Besides, the effect of bread wheat varieties and fungicides on STB development, wheat yield was evaluated at Holleta and Kulumsa in a factorial field experiment involving three bread wheat varieties and six fungicide spray schedules. At Holetta, variety Kekeba had the highest AUDPC (2548) value followed by Madawalabu and Alidoro; whereas at Kulumsa the highest AUDPC (1509) was recorded on variety Madawalabu followed by Alidoro and Kekeba varieties. STB incidence and severity were significantly reduced by the application of fungicides across varieties but fungicide-variety combinations had differential effects on disease development. Wheat grain yields were the lowest from unsprayed plots regardless of variety and location. Kekeba variety treated with Mancozeb-Tilt-Mancozeb-Tilt (MTMT) fungicide combination produced the highest yield (5.05t/ha). The highest (577.31%) and lowest (-19.95%) marginal rate of return were obtained from Tilt and MTMT sprayed fields at Holetta planted with Kekeba and Madawalabu varieties, respectively. On the other hand, at Kulumsa, the highest marginal rate of return (886.88%) and the lowest marginal rate of return (-63.98%) was obtained from Tilt and Mancozeb sprays on Madawalabu and Alidoro varieties, respectively. The present findings confirmed the importance of STB in Ethiopia and the role fungicides play in managing the disease on partially resistant varieties.
    VL  - 4
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Author Information
  • Department of Crop Protection (Plant Pathology), Hawassa University, Hawassa, Ethiopia

  • Department of Crop Protection (Plant Pathology), Hawassa University, Hawassa, Ethiopia

  • Department of Plant Pathology, Ethiopian Institute of Agricultural Research (Holleta Agricultural Research Center), Addis Ababa, Ethiopia

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