Cassava root rot disease.: Phytophthora spp, Pythium spp., Fusarium spp. Sclerotium rolfsii, Armilleria mellea and Rosellinia necatri;
Publication: PlantwisePlus Knowledge Bank
Pest Management Decision Guides
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Prevention
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Plant in a site that is not prone to flooding or water logging
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Always apply organic manure to the soil so as to give a good crop
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Do not plant cassava as a first crop after clearing forests
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Do not cultivate cassava on land that has a history of root rots
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Avoid getting planting material from fields with visible symptoms of root rots
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Destroy plant debris from plants with root rot symptoms (e.g. rotten roots, stems or roots carrying fruiting bodies) by burning or burying deep)
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Harvest early to prevent incidence of root rots
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Practice crop rotation with cereals and legumes except soybean and sunflower
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Use healthy planting material from plants with no visible symptoms of root rots
Monitoring
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Look out for browning and wilting of leaves, defoliations, stem or shoot dieback, breakage of stems at the base, rotting of the tuberous roots starting from 7 months after planting up to harvest
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Regularly look out for appearance of yellow mushrooms growing from the soil or white fruiting bodies at the base of cassava stems
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Check storage roots of affected plants for swollen internal soft brown rot
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In endemic areas, monitor cassava fields for single or few wilted plants growing among healthy plants
Direct Control
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Uproot any plants that show root rot disease symptoms and destroy
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Carefully remove fruiting bodies of the rot causing fungus and destroy immediately
Restrictions
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No chemical is recommended.
Indexing Terms
Descriptors
Organism Descriptors
Identifiers
- climate smart agriculture
- pest management decision guides
- cassava root rot disease
- cassava root rot
- Sclerotium rolfsii
- Armilleria mellea
- tapioca plant
- phytopathogenic fungi
- plant-pathogenic fungi
- fungus
- phytopathogens
- advisory services
- extension activities
- manioc
- flaming
- crop rotation
- rotational cropping
- harvest date
- subsaharan Africa
Geographical Locations
Broader Terms
- Peronosporaceae
- Peronosporales
- Oomycetes
- Oomycota
- Chromista
- eukaryotes
- Pythiaceae
- Pythiales
- Nectriaceae
- Hypocreales
- Sordariomycetes
- Pezizomycotina
- Ascomycota
- fungi
- Athelia
- Atheliaceae
- Atheliales
- Agaricomycetes
- Agaricomycotina
- Basidiomycota
- Armillaria
- Physalacriaceae
- Agaricales
- Rosellinia
- Xylariaceae
- Xylariales
- Manihot
- Euphorbiaceae
- Malpighiales
- eudicots
- angiosperms
- Spermatophyta
- plants
- Africa
- ACP Countries
- Anglophone Africa
- Commonwealth of Nations
- East Africa
- Africa South of Sahara
- Least Developed Countries
- low Human Development Index countries
- low income countries
Information & Authors
Information
Published In
Pest Management Decision Guides
Pest Management Decision Guide: Green and Yellow List
Applicable geographic locations
Africa, Uganda
Copyright
© CABI 2018. This article is published under aCreative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0)Published under a CC-BY-SA 4.0 licence
History
Issue publication date: 1 January 2019
Published online: 22 December 2020
Language
English
Authors
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