cassava is grown in many counties of south-east asia and the pacific and these areas account for an estimated 27% of total world production.cassava mosaic disease is the only virus disease known to be important in the region and it seems to be resricted to india and sri lanka. an early report of CMD in indonesia has not been confirmed and the symptoms were later attributed to a n=mineral deficiency.cassava green mottle virus has been detected in cassava originating from the pacific region,but its prevalence and importanca is not known and it is not considered further here.