Review on Major Biotic Threats to Crop Production and Food Security in Southern Ethiopia: Diseases, Pests and Parasitic Weeds
DOI:
https://doi.org/10.82489/rjsd.2025.1.01.32Keywords:
- Biotic stress, Integrated Pest Management (IPM), food securityAbstract
In southern Ethiopia's Ari, South Omo, and Konso, agriculture is gravely limited by a suite of biotic stresses augmented by climatic variability. These stresses pose a significant threat to regional food security and poor smallholder farmer livelihoods. Among the key diseases, Trichometasphaeria turcica infects up to 70% of maize in Ari and Fusarium graminearum infects approximately 45% of maize in Konso. Enset farming is also highly prone to different pathogenic infections. Insect pests like the African armyworm (Spodoptera exempta) and cutworms inflict massive damage on cereals and legumes throughout the zones. Post-harvest losses are immense, with grains within traditional bamboo granaries in Kena (Konso) not being safeguarded against infestation. Parasitic weeds like Striga and Cuscuta also cause complete crop failure in heavily infested fields with cereals and legumes. These issues bring out the imperative need for a comprehensive management approach that addresses weeds, diseases, and pests. Implementation of these approaches depends on the enhancement of farmers' knowledge and having adequate management inputs.
References
Abate, T., van Huis, A., & Ampofo, J. (2000). Pest management strategies in traditional African agriculture: An overview. Insects and Pests in African Farming Systems, 2(3), 45–62.
Abebe, T., Tefera, T., & Gebre-Selassie, K. (2009). Post-harvest losses of maize in Ethiopia: Causes, impacts, and management. Journal of Stored Products Research, 45(4), 293–299. https://doi.org/10.1016/j.jspr.2009.06.001
Addis, T., Blomme, G., & Haile, M. (2010). Enset bacterial wilt in southern Ethiopia: Epidemiology and management. African Journal of Biotechnology, 9(9), 1352–1361.
Amede, T., Desta, L., & Fekadu, G. (2014). Agricultural biodiversity and indigenous knowledge in Southern Ethiopia. Ethiopian Journal of Agricultural Sciences, 24(2), 11–28.
Bekele, A., & Wakjira, A. (2015). Spread and impact of invasive alien weeds in southern Ethiopia: Parthenium hysterophorus as a case study. Weed Biology and Management, 15(1), 10–18.
Bekele, T., Kebede, F., & Kassa, B. (2015). Crop losses due to pests and diseases in Ethiopia: Current status and challenges. Journal of Agricultural Science and Technology, 17(2), 101–113.
Canavan, S., & Tessema, Z. (2019). Parasitic weeds in African farming systems: Impacts and control measures. International Journal of Pest Management, 65(3), 231–243.
Day, R., Abrahams, P., Bateman, M., Beale, T., Clottey, V., Cock, M., … & Witt, A. (2017). Fall armyworm: Impacts and management strategies in Africa. Outlooks on Pest Management, 28(5), 196–201.
Kfir, R., Overholt, W. A., Khan, Z. R., & Polaszek, A. (2002). Biology and management of economically important lepidopteran cereal stem borers in Africa. Annual Review of Entomology, 47, 701–731. https://doi.org/10.1146/annurev.ento.47.091201.145230
Mahuku, G., Lockwood, J., & Bandyopadhyay, R. (2015). Foliar diseases of maize in sub-Saharan Africa: Epidemiology and management. Plant Disease, 99(6), 728–739.
Mekonen, T., & Tesfaye, A. (2020). Sorghum chafer beetle: Emerging threat to sorghum production in South Omo, Ethiopia. Journal of Insect Science, 20(3), 1–8.
Ministry of Agriculture. (2021). Agricultural sector performance report. Addis Ababa, Ethiopia: Government of Ethiopia.
Mulatu, A., Tadesse, W., & Alemayehu, Y. (2017). Coffee wilt disease and its management in southern Ethiopia. Journal of Plant Pathology, 99(2), 345–352.
Muluken, M., Desta, G., & Abera, K. (2022). Challenges and prospects of smallholder farming in southern Ethiopia: Biotic and abiotic constraints. Ethiopian Journal of Agricultural Research, 32(1), 45–60.
Oerke, E. (2006). Crop losses to pests. The Journal of Agricultural Science, 144(1), 31–43. https://doi.org/10.1017/S0021859605005708
Parker, C. (2007). The parasitic weeds of Africa: Biology and management. Weed Technology, 21(2), 281–287.
Terefe, T., Addis, T., & Blomme, G. (2019). Epidemiology of enset bacterial wilt in southern Ethiopia: A review. Plant Pathology Journal, 18(2), 65–77.
Tesfaye, A., & Lüdders, P. (2003). Indigenous soil and water management practices in southern Ethiopia. Agroforestry Systems, 57(3), 245–257.
Tesso, T., Ejeta, G., & Worku, M. (2012). Sorghum anthracnose in Ethiopia: Distribution, incidence, and management. African Journal of Agricultural Research, 7(40), 5476–5484.
UNESCO. (2011). Konso cultural landscape. Paris, France: United Nations Educational, Scientific and Cultural Organization.
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