MULTAN -Agriculture experts have advised growers to remove weeds to counter the threat of spotted bollworm to cotton.Spotted bollworm lay more eggs in hot weather conditions and larva comes out of it in three to four days which starts eating soft parts and branches and later at adult stage it damages flowers and bolls, says a release issued by media liaison unit of the Punjab agriculture department. An adult spotted bollworm is almost 15-18 mm long with long hair on its body. Growers should keep the field, ridges free from weeds which serve as host for spotted bollworm. They can apply hoeing or weedicides to remove weeds.
For chemical solution, growers should consult agriculture officials when infestation of spotted bollworm reaches economic threshold level (ETL). Growers should also conduct pest scouting regularly to take in time decisions to kill spotted bollworm, the release concluded.