For nearly four years now, the deadly pink bollworm has ravaged cotton crops in the northern states of Punjab, Haryana, and Rajasthan. Cotton cultivation in these states has fallen from around 16 lakh hectares last year to only 10 lakh hectares this year, as of the first week of July. The pink bollworm (PBW), known among farmers as gulabi sundhi, damages the cotton crop by burrowing its larvae into the cotton bolls. This results in the lint being cut and stained, making it unfit for use. While there exist effective…