bollworm
- n any of various moth caterpillars that destroy cotton bolls
- It is conceivable, so to speak, that the bollworm could evolve immunity to its own sex pheromonefor example, by producing a different scent.
- So far, the pink bollworm population has not rebounded, indicating that the feared resistance to Bt has not yet developed.
- As the pests, such as pink bollworm and aphids, became increasingly resistant to chemical spraying, farmers reacted by laying on even more, sometimes mixing two or more products .