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Sweet Corn Pheromone Trap Network for Western New
This is a seasonal scouting report giving growers in the Western New York area information on the presence of sweet corn pests and recommendations on scouting and thresholds. The report is written by Abby Seaman, NYS IPM's Area Extension Educator for Vegetables.
The ECB flight has taken a jump this week at most locations with the warmer temperatures, and we're catching Z race moths at more sites. One CEW caught at both Eden and Medina.
Fields at the most advanced stage of development will be most attractive to egg-laying ECB moths. Larvae hatching from eggs laid now will feed in the whorl and be found later in the emerging tassel. Demonstrations have shown that insecticides applied before tassel emergence do not improve control compared with fields that received only tassel emergence applications. Information from North Carolina indicates that CEW will lay eggs on the growing tips of small corn plants, and larvae will feed on the whorl. The feeding sounds similar to FAW feeding, and any CEW larvae can probably be targeted in a tassel emergence spray.