Occurrence of CWBD in 3 countries in Southeast Asia

The monitoring was conducted during 2020 in the main cassava producing areas in the countries of Laos, Cambodia, and Vietnam. The monitoring protocol was defined by CIAT's Virology and Crop Protection group and is part of the project "Sustainable cassava disease solution in Southeast Asia". A sample size of 60 photographs per hectare was defined following an X or Z pattern across the field, a photograph was taken of each plant and 500-1000 milligrams of young leaves were collected on paper towels, the tissue was stored in hermetically sealed plastic bags with silica gel. Data was uploaded to the PestDisPlace platform where visual recognition of CWBD symptoms was identified for each photograph.