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Plant Pathology Journal

Year: 2017 | Volume: 16 | Issue: 1 | Page No.: 1-11
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Authors

Affery Arthur Martin,

Abo Kouabenan

Tuo Seydou

Tuo Seydou

N`Zue Boni

Kone Daouda

Keywords

Research Article

Geographical Distribution and Incidence of Cassava Bacterial Blight (Manihot esculenta Crantz) Caused by Xanthomonas axonopodis pv. manihotis in Two Agro-ecological Zones of Cote d'Ivoire

Affery Arthur Martin,, Abo Kouabenan, Tuo Seydou Tuo Seydou's LiveDNA, N`Zue Boni and Kone Daouda
Background and Objective: Cassava (Manihot esculenta Crantz) is the second largest food crop in Côte d’Ivoire after yam. It is cultivated for its fleshy roots rich in starch and for the richness of its leaves in minerals (calcium, phosphorus and iron). However, this crop is subject to numerous biotic constraints of which one of the most formidable is bacterial blight caused by Xanthomonas axonopodis pv. manihotis. In Côte d’Ivoire, no concrete study has been conducted on this emerging disease with the aim of reducing its impact on the yield of tuberous roots of traditional and improved varieties. The objective of this study is to study the distribution of bacterial blight on the one hand and to assess the sensitivity of 8 varieties through an epidemiological study in two agro-ecological zones of Côte d’Ivoire on the other hand. Materials and Methods: Survey missions conducted in 2013 and 2014 have helped establish the health map of the different cassava production zones, followed by an epidemiological study of the disease with 8 cassava varieties of which four are improved, in two cassava production zones (Yamoussoukro and Ferkessedougou). Results: The results showed that bacterial blight was observed in all agro-ecological zones with an incidence ranging from 2.17-66.67%. As for the epidemiological study, it showed a contrast between the two areas of study. The severity of the disease was very low in the dry season (December-March) corresponding to the 7th until the 10th month of this study. Moreover, the rainy season contributed to an expansion of the disease. Diarrassouba and Yace (traditional varieties) and Bocou 1 (improved variety) were the most susceptible to the disease. Conclusion: A fight against this disease must be envisaged before it spreads to all cassava cultivation zones in Côte d’Ivoire.
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How to cite this article

Affery Arthur Martin,, Abo Kouabenan, Tuo Seydou, N`Zue Boni and Kone Daouda, 2017. Geographical Distribution and Incidence of Cassava Bacterial Blight (Manihot esculenta Crantz) Caused by Xanthomonas axonopodis pv. manihotis in Two Agro-ecological Zones of Cote d'Ivoire. Plant Pathology Journal, 16: 1-11.

DOI: 10.3923/ppj.2017.1.11

URL: https://scialert.net/abstract/?doi=ppj.2017.1.11

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