Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Cassava green mottle (068)

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  • Narrow distribution. Only known from Solomon Islands (islands of Choiseul and possibly Malaita). On cassava. An important virus disease.
  • Young leaves with yellow spots and patches, distorted, often recovering, but sometimes severely stunted. Cuttings from infected plants develop slowly, and weight of stems and roots half those of healthy plants. Roots small, and woody when cooked.
  • Spread occurs as cuttings for planting; possibly nematodes.
  • Biosecurity: restrict movement of cuttings.
  • Cultural control: carefully choose symptom-free cuttings for planting; remove plants with symptoms as soon as seen, and burn them.
  • Chemical control: none recommended.
Common Name

Cassava green mottle

Scientific Name

Cassava green mottle nepovirus. It has not been confirmed to be a nepovirus; these are viruses that are transmitted by nematodes - hence the name.

AUTHORS Helen Tsatsia & Grahame Jackson
Information from CABI (2019). Cassava green mottle virus (2019) Crop Protection Compendium. ( Lennon AM 1987) Annals of Applied Biology. (

Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.

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