How to use pheromone traps for bollworm and stem borer?

Pheromone traps use a synthetic copy of the female moth scent in a rubber lure to draw and catch male moths. Each pest needs its own specific lure, for example a pink bollworm lure for cotton, a separate lure for the spotted or American bollworm, and different lures for paddy or sugarcane stem borers, so always buy the lure made for your exact pest. Use them in two ways. For monitoring, put about 4 to 5 traps per acre and count the moths caught each day, when catches cross the warning level it tells you to scout the crop and act. For mass trapping to actually reduce the pest, you need many more, often 15 to 20 or more traps per acre. Hang the trap a little above the canopy, raise it as the crop grows, and replace the lure roughly every 2 to 3 weeks as the scent fades. Traps work best as an early warning and supporting tool alongside good variety choice, timely sowing and biopesticides, not as a standalone cure for a heavy borer attack. Check the right lure and trap numbers with your KVK.