On evaluating 86 varieties of mint genotypes, 12 less susceptible to whitefly were chosen. Of these, three of the most resistant types were determined. Research showed the Kushal and Himalaya varieties to be most resistant.

It also revealed that the MS1 variety, which was distributed to farmers by the institute last year due to its high-value proposition, was very susceptible to whitefly.

To study the whitefly, scientists trapped them using yellow sticky plastic boards placed strategically between rows of mint crop for three hours every morning. Whitefly is attracted to the colour yellow, just as the honeybee is to red. These traps were designed specifically by the institute, now available at a minimum price.