Volume 8, Issue 6, November 2020, Page: 139-149
Survey of Tea (Camellia sinensis) Diseases in Southwestern Ethiopia
Nagassa Dechassa, Ethiopian Institute of Agricultural Research, Jimma Agricultural Research, Jimma, Ethiopia; Ethiopian Institute of Agricultural Research, Ambo Agricultural Research, Ambo, Ethiopia
Gabissa Gidissa, Ethiopian Institute of Agricultural Research, Jimma Agricultural Research, Jimma, Ethiopia
Legese Hagos, Ethiopian Institute of Agricultural Research, Jimma Agricultural Research, Jimma, Ethiopia
Mohammedsani Zakir, Ethiopian Institute of Agricultural Research, Jimma Agricultural Research, Jimma, Ethiopia
Lemi Beksisa, Ethiopian Institute of Agricultural Research, Jimma Agricultural Research, Jimma, Ethiopia
Melaku Adisu, Ethiopian Institute of Agricultural Research, Jimma Agricultural Research, Jimma, Ethiopia
Received: Oct. 7, 2020;       Accepted: Oct. 27, 2020;       Published: Nov. 11, 2020
DOI: 10.11648/j.ajbio.20200806.11      View  120      Downloads  79
Tea (Camellia sinensis) is one of the most commonly consumed beverages next to water worldwide. However its production and productivity is constrained by many fungal diseases in Ethiopia. Despite this, there is lack of information on the status of the diseases and lack of knowledge on features of the pathogens associated with the diseases as there have been no any systematic assessments conducted so far. Therefore, the current works were designed with the objectives to assess the distribution of tea diseases and identify the associated pathogens. For this purpose, field surveys were carried out across three tea estate farms (Wushwush, Chewaka and Gumaro) and tea out growers surrounding them in Kafa, Sheka and Ilu Aba Bora zones in Southwest Ethiopia during the 2019 season. Causative pathogens of the diseases were identified using cultural and morphological features. The average Fusarium wilt incidence varied from (0 to 20%), Black rot (7-15%), Bird’s eye spot (4-15%), Brown blight (2-5%) and Grey blight (0.5-5%) while mean disease severity of Black rot, Eye spot, Brown blight and Grey blight ranged from 4-11%, 3-9%, 1-5% and 0.5-5%, respectively. Fusarium wilt, black rot disease and eye spot diseases of tea directly related to tea yield loss. Algal leaf spot disease caused by Cephaleuros virescens was observed at Gumaro tea estate farm on the older leaves of aged tea bushes. The present study revealed the economic importance of tea diseases in Southwest Ethiopia. Future research should be directed towards the investigation and determination of management options for the control of important diseases of tea in the country.
Blight, Eye Spot, Fungal Diseases, Fusarium Wilt, Tea Bushes
To cite this article
Nagassa Dechassa, Gabissa Gidissa, Legese Hagos, Mohammedsani Zakir, Lemi Beksisa, Melaku Adisu, Survey of Tea (Camellia sinensis) Diseases in Southwestern Ethiopia, American Journal of BioScience. Vol. 8, No. 6, 2020, pp. 139-149. doi: 10.11648/j.ajbio.20200806.11
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This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Hicks A (2009) Current status and future development of global tea production and tea products. AU J. T. 12 (1), pp. 251-264.
Phong W., Pongnak K., Soytong S., Poeaim A. and Poeaim. 2016. Diversity of tea (Camellia sinensis) grown in Vietnam based on morphological characteristics and interprimer binding sites (iPBS) marker. Inter. Jour. of Agri. Bio., 18: 385-392. DOI: 10.17957/IJAB/15.0100.
Yemane, M., Chandravanshi, B. S. and Wondimu, T., 2008. Levels of essential and non-essential metals in leaves of the tea plant (Camellia sinensis L.) and soil of Wushwush farms, Ethiopia. Food Chemistry, 107 (3), pp. 1236-1243.
Owuor, P. O., Obanda, M., Nyirenda, H. E. and Mandala, W. L., 2008. Influence of region of production on clonal black tea 4 (1), pp. 134-135.chemical characteristics. Food Chemistry, 108 (1), pp. 263-271.
Eden T. 1958. The development of tea culture. Pp 1-4. In: Eden, T. (Ed) Tea. Longman, London, U.K.
Mohammedsani Z (2019) Morphological And Biochemical Characterization Of Tea (Camellia Sinensis (L.) O. Kuntze) Clones In Southwestern Ethiopia (Doctoral Dissertation, Jimma University).
Olaniyi A., Odeyemi D., Adewale A., Oloyede F., Anagbogu O., Adeigbe O., Adenuga. 2014. Tea (Camellia Sinensis) Breeding in Nigeria: Past and Present Status; Intern. Jour. of Sci and Res. Publ., 4 (1), pp. 1-4.
Barthakur K. 2002. Important Diseases of Tea and their Control. Notes on Field Management. 193-198.
Sinha M. 2010. World tea production and manufacturing. Wishwell Publisher, New Delhi, India.
Yongming Y. 1999. Agro-technology of tea in China. In: N. K. Jain (ed.) Global Advances in Tea Science. Aravali Books International (P) Ltd., New Delhi, India. pp. 481-500.
Mamun, M. S. A. and Ahmed, M., 2011. Prospect of indigenous plant extracts in tea pest management. International Journal of Agricultural Research, Innovation and Technology, 1 (1), pp. 16-23.
Youn, S. I. and Chang, I. T., 1979. Photoelastic Stress Analysis of the Crown Restorations. The journal of the Korean dental association, 17 (1), pp. 47-52.
Islam, M. S. and Ali, M., 2011. Efficacy of Sedomil 72 WP and Recozeb 80 WP in controlling red rust of tea. Bangladesh Journal of Agricultural Research, 36 (2), pp. 279-284.
Hernández, M. S., Davila, A. R., De Algaba, A. P., Lopez, M. B. and Casas, A. T., 1998. Occurrence and etiology of death of young olive trees in southern Spain. European Journal of plant pathology, 104 (4), pp. 347-357.
Talbot P. 1954. Micro Morphology of the Lower Hymenomycetes. Bothnlia, 6 (1), pp. 249-299.
Burt A. 1918. Corticium Causing Pellicularia disease of the coffee, Hypochnose of Pomaceous fruits and Rhizoctonia disease. Annual Molecular Botanical Garden, 5 (1), pp. 119-132.
Burt. 1926. Thelephoraceae of North American Corticium. Annual Molecular botanical Garden, 13 (1), pp. 173-354.
Rogers P. and Jackson S. 1943. Notes on the Synonymy of some North American Thelephoraceae and Other Resupinates. Farlowia 1 (1), pp. 263-328.
Venkatarayan S. 1949. The validity of the name Pellicularia koleroga Cooke. Indian Phytopathology, 2 (1), pp. 186-189.
Wakefield G. 1913. Differential characters in some resupinate Hymenomycetes. Plant Diseases of International Importance, 4 (1), pp. 113-120.
Hoehnel V. (1910) Fragmente zur Mykologie. Mitteilung, 10 (1), pp. 468-526.
Cooke C. 1876. Some Indian fungi Pellicularia and affinities of Pellicularia. Grevillea.
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