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Advances in Agriculture
Volume 2019, Article ID 8193818, 10 pages
Research Article

Farmers’ Perceptions of Mexican Bean Weevil, Zabrotes subfasciatus (Boheman), and Pest Management Practices in Southern Ethiopia

1Department of Postharvest Management, Jimma University College of Agriculture & Veterinary Medicine, P. O. Box 307, Jimma, Ethiopia
2Department of Horticulture & Plant Sciences, Jimma University College of Agriculture & Veterinary Medicine, P.O. Box 307, Jimma, Ethiopia

Correspondence should be addressed to Esayas Mendesil; moc.oohay@lisedneme

Received 8 December 2018; Revised 24 February 2019; Accepted 12 March 2019; Published 11 April 2019

Academic Editor: Ayman Suleiman

Copyright © 2019 Tariku Mesele et al. This 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.


The common bean, Phaseolus vulgaris L., is one of the most important sources of protein in Ethiopia and other developing countries. However, the Mexican bean weevil, Zabrotes subfasciatus (Boheman), is a major constraint of stored common bean that causes qualitative and quantitative losses. This study was conducted to assess farmers’ knowledge and perceptions of Mexican bean weevil, to examine farmers’ pest management practices, and to identify challenges of pest management practices to develop integrated pest management (IPM) strategies. A survey of 148 smallholder common bean farmers was conducted at Mareka and Loma districts in southern Ethiopia. The majority (75%) of the farmers stored common bean in polypropylene bags while less than 10% of the farmers stored beans in ‘Diya’ (a traditional storage structure). Most (60.8%) farmers stored their beans in seed (threshed) form, and the majority (63.5%) of them stored their beans for 3-5 months. The majority of the farmers had knowledge about the Mexican bean weevil; they could identify damaged seeds based on the ‘holes’ on the seed (72.3%) and circular ‘windows’ on the seed (20.0%). About 45% of the farmers mentioned the high amount of loss at the time of storage. In addition, most farmers (53.4%) estimated 26-50% loss in storage. Most farmers reported the use of pesticidal plants for control of Mexican bean weevil, while only a few farmers reported they had applied insecticide in their store. Education level and family size had a positive and statistically significant impact on the use of pesticidal plants for the control of Mexican bean weevil. Furthermore, education level also influences the use of chemical insecticide. Results highlighted the need to use improved storage technology and to train farmers in postharvest handling practices as a component to develop IPM approach in order to minimize losses occurring along the value chains of the common bean.