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Research Article Open access CC BY 4.0

Occurrence, Distribution and Farmers' Perceptions of Cassava Diseases in Gabon, Central Africa

Mouketou Armel, Ndiade Bourobou Dyana, Koumba Aubin Armel, Abessolo Meye Clotilde, Gnacadja Claude, Zinga Koumba Christophe Roland, Mbeng Ndong Hendrix, Sima Owono Rochat Léotard, Lepengué Alexis Nicaise, Mavoungou Jacques François

Asian Research Journal of Agriculture · pp. 49–63 · Published 25 Nov 2023

10.9734/arja/2023/v16i4402

Abstract

Aims: In order to identify and assess the level of cassava diseases in farms present in Gabon, disease surveys were carried out across the country in 2021 and 2022. Methodology: The method used is based on administration of questionnaire to cassava growers, supplemented by the recognition of disease symptoms on 30 randomly selected plants in farms. Results: Some 201 cassava growers were interviewed, 84.04% (n=169) of them were women and 15.92% (n=32) men. Nearly 65.41% of the farmers interviewed had a primary school education and were aged between 51 and 55. The majority of these producers had farming as their main activity (89.73%). The results showed the occurrence of five cassava diseases in the study area: cassava mosaic (Im = 60.22%; Sm = 2.95), anthracnose (Im = 19.45%; Sm = 3), leaf necrosis (Im= 9.95%; Sm = 2.71), bacteriosis (Im = <1%; Sm = 3), and root rot (Im = <1%; Sm = 2.61). Among these diseases, mosaic was the most frequently observed in the provinces surveyed. Its incidence was lowest in Estuaire (38.40%) and highest in Ogooué-Ivindo (71.36%) and Ogooué-Maritime (71.76%). Anthracnose incidence was lowest in Moyen-Ogooué (4.05%) and highest in Haut-Ogooué (36.50%). For leaf necrosis, Woleu-Ntem (0.71%) and Ogooué-Ivindo (31.11%) recorded the lowest and highest incidence respectively. Conclusion: In order to control these cassava diseases, it is important to initiate and implement awareness campaigns and training workshops for growers to encourage them to adopt good farming practices.

Cassava diseases fields farmers socio-demography Gabon

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