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The current status, farmers’ management practices, knowledge, and perceptions of common bean anthracnose in Tanzania

Research Paper | February 1, 2022

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Faustine Christopher&, Patrick A. Ndakidemi, Samuel Nyalala, Ernest R. Mbega

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Int. J. Biosci.20( 2), 162-175, February 2022

DOI: http://dx.doi.org/10.12692/ijb/20.2.162-175


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Effective disease management requires farmers’ awareness of its cause, transmission mechanisms, and appropriate management methods. This study assessed the current status, farmers’ management knowledge, practices, and perceptions of common bean anthracnose in Tanzania. Field surveys were conducted during the February-June 2020 growing season in ten Districts, namely Misenye, Karagwe, Hanang, Mbulu, Hai, Kilindi, Arusha DC, Mbozi, Njombe, Mufindi, and Mukalama. Ten farms from each District were surveyed for the disease prevalence and incidences using a Z-survey technique. Structured questionnaires were also administered to 280 farmers to elicit their knowledge, management practices, and perceptions of bean anthracnose. The results indicate that the disease is prevalent in all the surveyed Districts and disease incidence varied significantly across districts (p<0.001). Disease incidence was higher in Mufindi (68%) and least in Hai (5%), whereas prevalence was higher in Karagwe (100%) and least in Hai (40%). Most of the farmers (94.3%) had noticed the disease in their farms and could identify symptoms. Only 26.4% associated bean anthracnose with a particular cause, and only 21.4% know how it is transmitted. Similarly, the majority of the farmers had limited knowledge of appropriate management methods, although they perceived bean anthracnose a serious disease, causing significant losses. Very few farmers used fungicides, cultural practices, and botanicals to manage the disease, and the majority did nothing after noting symptoms in their farms. Our findings provide an alert for anthracnose disease levels in Tanzania and suggest the need for capacity building among farmers on the disease’s cause, transmission, and management.


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