Distribution of common bacterial blight and anthracnose diseases and factors influencing epidemic development in major common bean growing areas in Ethiopia
Taylor & Francis Group - Informa UK Limited
Common bean is an important legume consumed as a source of food and used as a cash crop worldwide. However, its production and productivity are mainly constrained by bacterial and fungal diseases. A field survey was conducted to determine the prevalence, incidence, severity and association of factors influencing common bacterial blight (CBB) and anthracnose epidemics in major bean growing areas of Ethiopia, during 2019. In three regions within six zones from 12 districts, a total of 180 common bean fields were assessed for CBB and anthracnose. The results revealed that CBB and anthracnose were 100% prevalent though CBB was more severe than anthracnose. The logistic regression model showed CBB and anthracnose components were significantly associated with biophysical factors. High CBB incidence (>70%) at Ambo, Arsi-Negele and Shashemene-zuriya and high severity (>30%) at Ambo, Boricha and Shahsemene-zuriya were strongly associated with sole cropping, July sowing, poor weeding practices, maturity stage and own saved seeds. Anthracnose incidence of >50% and severity of >30% had high probabilities of associations with zones, sole cropping, own saved seeds, variety, poor weeding practices and maturity stages. The study indicated that CBB and anthracnose are severe and 100% prevalent in Ethiopia, and efforts should be done towards the usage of clean seeds, weeding practices, following appropriate sowing dates and other appropriate agronomic practices to manage the diseases.
Acknowledgements: The authors would like to thank all the agriculture and rural development offices of the surveyed districts for their kind information supports. Also, we would like to appreciate farmers who voluntarily involved in the interview sessions to obtain the required information. The Version of Scholarly Record of this Article is published in Acta Agriculturae Scandinavica, Section B — Soil & Plant Science, 2022, available online at: http://www.tandfonline.com/10.1080/09064710.2022.2063168 . © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Keywords: Anthracnose; common bacterial blight; biophysical factors; common bean diseases; logistic regression analysis; Phaseolus vulgaris; Africa; Ethiopia; smallholder farmers.
Fekede Girma, Chemeda Fininsa, Habtamu Terefe & Berhanu Amsalu (2022) Distribution of common bacterial blight and anthracnose diseases and factors influencing epidemic development in major common bean growing areas in Ethiopia, Acta Agriculturae Scandinavica, Section B — Soil & Plant Science, 72:1, 685-699, DOI: 10.1080/09064710.2022.2063168