An Investigation on Coffee Thread Blight Caused by <i>Corticium koleroga</i> (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia

Nagassa Dechassa; Alemayehu Chala; Kifle Belachew; Elfinesh Shikur

doi:doi:10.11648/j.jddmc.20200603.11

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An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur

Published in Journal of Drug Design and Medicinal Chemistry (Volume 6, Issue 3)

Received: 6 October 2020 Accepted: 20 October 2020 Published: 30 October 2020

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Abstract

Thread blight caused by Corticium koleroga is a devastating disease that causes severe damage to C. arabica in south-western Ethiopia. However, it is one of the least researched diseases in Ethiopia. Therefore, the current work was designed with the objectives to assess the incidence and severity of the disease and identifying major factors associated with the disease intensity in south-western Ethiopia. For this purpose, field surveys were conducted on 180 farmers’ fields in 12 districts of major coffee growing areas in south-western Ethiopia during 2017 cropping season. The average thread blight incidence varied from 0% to 46% while mean disease severity ranged from 0% to 44%. The thread blight disease incidence and severity were higher at areas representing highland and midland altitudes compared with lowland altitudes. Thread blight severity was positively and strongly associated with rainfall (r=0.75) and relative humidity (r=0.85), but the disease severity was negatively and strongly associated with mean temperature (r=-0.79) and shade level (r=-0.50), while it was positively and intermediately correlated to altitude (r=0.44) and coffee production systems (r=0.36). The present study revealed the importance of coffee thread blight in south-western Ethiopia and identified factors associated with the disease intensity. Future research should be directed towards surveying more agro-ecologies to have a complete picture on the importance of thread blight disease across the country and to recommend disease management strategies.

Published in	Journal of Drug Design and Medicinal Chemistry (Volume 6, Issue 3)
DOI	10.11648/j.jddmc.20200603.11
Page(s)	22-29
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), 2020. Published by Science Publishing Group

Keywords

Disease Intensity, Incidence, Koleroga, Severity, Southwest Ethiopia

References

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[17]	López-Bravo, Virginio F, Avelino J (2012). Shade is Conducive to Coffee Rust as Compared to Full Sun Exposure Under Standardized Fruit Load Conditions in A Sub-Optimal Zone for Coffee in Costa Rica. In: The 24^th International Conference on Coffee Science, pp. 21-29.
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APA Style

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. (2020). An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia. Journal of Drug Design and Medicinal Chemistry, 6(3), 22-29. https://doi.org/10.11648/j.jddmc.20200603.11

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ACS Style

Nagassa Dechassa; Alemayehu Chala; Kifle Belachew; Elfinesh Shikur. An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia. J. Drug Des. Med. Chem. 2020, 6(3), 22-29. doi: 10.11648/j.jddmc.20200603.11

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AMA Style

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia. J Drug Des Med Chem. 2020;6(3):22-29. doi: 10.11648/j.jddmc.20200603.11

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@article{10.11648/j.jddmc.20200603.11,
  author = {Nagassa Dechassa and Alemayehu Chala and Kifle Belachew and Elfinesh Shikur},
  title = {An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia},
  journal = {Journal of Drug Design and Medicinal Chemistry},
  volume = {6},
  number = {3},
  pages = {22-29},
  doi = {10.11648/j.jddmc.20200603.11},
  url = {https://doi.org/10.11648/j.jddmc.20200603.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jddmc.20200603.11},
  abstract = {Thread blight caused by Corticium koleroga is a devastating disease that causes severe damage to C. arabica in south-western Ethiopia. However, it is one of the least researched diseases in Ethiopia. Therefore, the current work was designed with the objectives to assess the incidence and severity of the disease and identifying major factors associated with the disease intensity in south-western Ethiopia. For this purpose, field surveys were conducted on 180 farmers’ fields in 12 districts of major coffee growing areas in south-western Ethiopia during 2017 cropping season. The average thread blight incidence varied from 0% to 46% while mean disease severity ranged from 0% to 44%. The thread blight disease incidence and severity were higher at areas representing highland and midland altitudes compared with lowland altitudes. Thread blight severity was positively and strongly associated with rainfall (r=0.75) and relative humidity (r=0.85), but the disease severity was negatively and strongly associated with mean temperature (r=-0.79) and shade level (r=-0.50), while it was positively and intermediately correlated to altitude (r=0.44) and coffee production systems (r=0.36). The present study revealed the importance of coffee thread blight in south-western Ethiopia and identified factors associated with the disease intensity. Future research should be directed towards surveying more agro-ecologies to have a complete picture on the importance of thread blight disease across the country and to recommend disease management strategies.},
 year = {2020}
}

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TY  - JOUR
T1  - An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia
AU  - Nagassa Dechassa
AU  - Alemayehu Chala
AU  - Kifle Belachew
AU  - Elfinesh Shikur
Y1  - 2020/10/30
PY  - 2020
N1  - https://doi.org/10.11648/j.jddmc.20200603.11
DO  - 10.11648/j.jddmc.20200603.11
T2  - Journal of Drug Design and Medicinal Chemistry
JF  - Journal of Drug Design and Medicinal Chemistry
JO  - Journal of Drug Design and Medicinal Chemistry
SP  - 22
EP  - 29
PB  - Science Publishing Group
SN  - 2472-3576
UR  - https://doi.org/10.11648/j.jddmc.20200603.11
AB  - Thread blight caused by Corticium koleroga is a devastating disease that causes severe damage to C. arabica in south-western Ethiopia. However, it is one of the least researched diseases in Ethiopia. Therefore, the current work was designed with the objectives to assess the incidence and severity of the disease and identifying major factors associated with the disease intensity in south-western Ethiopia. For this purpose, field surveys were conducted on 180 farmers’ fields in 12 districts of major coffee growing areas in south-western Ethiopia during 2017 cropping season. The average thread blight incidence varied from 0% to 46% while mean disease severity ranged from 0% to 44%. The thread blight disease incidence and severity were higher at areas representing highland and midland altitudes compared with lowland altitudes. Thread blight severity was positively and strongly associated with rainfall (r=0.75) and relative humidity (r=0.85), but the disease severity was negatively and strongly associated with mean temperature (r=-0.79) and shade level (r=-0.50), while it was positively and intermediately correlated to altitude (r=0.44) and coffee production systems (r=0.36). The present study revealed the importance of coffee thread blight in south-western Ethiopia and identified factors associated with the disease intensity. Future research should be directed towards surveying more agro-ecologies to have a complete picture on the importance of thread blight disease across the country and to recommend disease management strategies.
VL  - 6
IS  - 3
ER  -

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Author Information

Nagassa Dechassa

Ethiopian Institute of Agricultural Research, Jimma Agricultural Research Centre, Jimma, Ethiopia
Alemayehu Chala

School of Plant and Horticultural Sciences, College of Agriculture, Hawassa University, Hawassa, Ethiopia
Kifle Belachew

Ethiopian Institute of Agricultural Research, Jimma Agricultural Research Centre, Jimma, Ethiopia
Elfinesh Shikur

School of Plant and Horticultural Sciences, College of Agriculture, Hawassa University, Hawassa, Ethiopia

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APA Style

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. (2020). An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia. Journal of Drug Design and Medicinal Chemistry, 6(3), 22-29. https://doi.org/10.11648/j.jddmc.20200603.11

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ACS Style

Nagassa Dechassa; Alemayehu Chala; Kifle Belachew; Elfinesh Shikur. An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia. J. Drug Des. Med. Chem. 2020, 6(3), 22-29. doi: 10.11648/j.jddmc.20200603.11

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AMA Style

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia. J Drug Des Med Chem. 2020;6(3):22-29. doi: 10.11648/j.jddmc.20200603.11

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@article{10.11648/j.jddmc.20200603.11,
  author = {Nagassa Dechassa and Alemayehu Chala and Kifle Belachew and Elfinesh Shikur},
  title = {An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia},
  journal = {Journal of Drug Design and Medicinal Chemistry},
  volume = {6},
  number = {3},
  pages = {22-29},
  doi = {10.11648/j.jddmc.20200603.11},
  url = {https://doi.org/10.11648/j.jddmc.20200603.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jddmc.20200603.11},
  abstract = {Thread blight caused by Corticium koleroga is a devastating disease that causes severe damage to C. arabica in south-western Ethiopia. However, it is one of the least researched diseases in Ethiopia. Therefore, the current work was designed with the objectives to assess the incidence and severity of the disease and identifying major factors associated with the disease intensity in south-western Ethiopia. For this purpose, field surveys were conducted on 180 farmers’ fields in 12 districts of major coffee growing areas in south-western Ethiopia during 2017 cropping season. The average thread blight incidence varied from 0% to 46% while mean disease severity ranged from 0% to 44%. The thread blight disease incidence and severity were higher at areas representing highland and midland altitudes compared with lowland altitudes. Thread blight severity was positively and strongly associated with rainfall (r=0.75) and relative humidity (r=0.85), but the disease severity was negatively and strongly associated with mean temperature (r=-0.79) and shade level (r=-0.50), while it was positively and intermediately correlated to altitude (r=0.44) and coffee production systems (r=0.36). The present study revealed the importance of coffee thread blight in south-western Ethiopia and identified factors associated with the disease intensity. Future research should be directed towards surveying more agro-ecologies to have a complete picture on the importance of thread blight disease across the country and to recommend disease management strategies.},
 year = {2020}
}

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TY  - JOUR
T1  - An Investigation on Coffee Thread Blight Caused by Corticium koleroga (Cke) Hoehnel and Its Associated Factors in Southwest Ethiopia
AU  - Nagassa Dechassa
AU  - Alemayehu Chala
AU  - Kifle Belachew
AU  - Elfinesh Shikur
Y1  - 2020/10/30
PY  - 2020
N1  - https://doi.org/10.11648/j.jddmc.20200603.11
DO  - 10.11648/j.jddmc.20200603.11
T2  - Journal of Drug Design and Medicinal Chemistry
JF  - Journal of Drug Design and Medicinal Chemistry
JO  - Journal of Drug Design and Medicinal Chemistry
SP  - 22
EP  - 29
PB  - Science Publishing Group
SN  - 2472-3576
UR  - https://doi.org/10.11648/j.jddmc.20200603.11
AB  - Thread blight caused by Corticium koleroga is a devastating disease that causes severe damage to C. arabica in south-western Ethiopia. However, it is one of the least researched diseases in Ethiopia. Therefore, the current work was designed with the objectives to assess the incidence and severity of the disease and identifying major factors associated with the disease intensity in south-western Ethiopia. For this purpose, field surveys were conducted on 180 farmers’ fields in 12 districts of major coffee growing areas in south-western Ethiopia during 2017 cropping season. The average thread blight incidence varied from 0% to 46% while mean disease severity ranged from 0% to 44%. The thread blight disease incidence and severity were higher at areas representing highland and midland altitudes compared with lowland altitudes. Thread blight severity was positively and strongly associated with rainfall (r=0.75) and relative humidity (r=0.85), but the disease severity was negatively and strongly associated with mean temperature (r=-0.79) and shade level (r=-0.50), while it was positively and intermediately correlated to altitude (r=0.44) and coffee production systems (r=0.36). The present study revealed the importance of coffee thread blight in south-western Ethiopia and identified factors associated with the disease intensity. Future research should be directed towards surveying more agro-ecologies to have a complete picture on the importance of thread blight disease across the country and to recommend disease management strategies.
VL  - 6
IS  - 3
ER  -

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