Rhizoctonia theobromae (ONCOTH)[Brazil]| EPPO Global Database

Rhizoctonia theobromae(ONCOTH)

Distribution details in Brazil

Situation

Current pest situation evaluated by EPPO on the basis of information dated 2025: Present, few occurrences
First recorded in: 2023
Pest status declared by NPPO: Present, not widely distributed and under official control (2025-07)

Comments

EPPO Reporting Service (2025/048) : emerging disease in cassava. Reported in Amapa.

EPPO Reporting Service (2025/206) : first recorded in Pará on cassava.

References

* Alves Santos de Oliveira S, Sheat S, Margaria P, Lopes Lima A, de Araújo dos Santos J, Rocha HS, Fleck da Silveira H, Ramos de Jesus C, Winter S (2025) Rhizoctonia theobromae associated with a severe witches’ broom outbreak in cassava of the Brazilian rainforest and evidence of its Southeast Asian origin. bioRxiv https://doi.org/10.1101/2025.02.14.638269 [not peer reviewed]

* EMBRAPA
-2024-08-15 Nota Técnica 10729769. Notificação de Nova Doença - ‘Vassoura de Bruxa’ da mandioca causada por Ceratobasidium theobromae (Rhizoctonia theobromae) no Brasil. 5pp. https://www.embrapa.br/en/busca-de-noticias/-/noticia/91690274/embrapa-identifica-primeiro-caso-de-vassoura-de-bruxa-da-mandioca-no-brasil
- 2025-07-07 Embrapa e ministérios montam estratégias para enfrentar vassoura-de-bruxa da mandioca no Amapá e Pará. https://www.embrapa.br/busca-de-noticias/-/noticia/101704837/embrapa-e-ministerios-montam-estrategias-para-enfrentar-vassoura-de-bruxa-da-mandioca-no-amapa-e-para

Situation in neighbouring countries

Country	State	Status
French Guiana		Present, no details	view...
Suriname		Present, no details	view...

Rhizoctonia theobromae(ONCOTH)

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Distribution details in Brazil