This study focuses on tomato, chili and mungbean, as these crops are economically important in tropical and subtropical Asia but have been under particular pressure, or are under increasing pressure, from virus-related diseases. Data were collected from February 2013 to September 2013 in Thailand, Vietnam and Tamil Nadu, India. In Thailand, data were collected only for tomato and chili as mungbean is not widely cultivated. For each case, we identified the main production areas for open field cultivation by consulting local crop experts.