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Iowa State University

The European Corn Borer

Department of Entomology

  • The Insect
    • Identification
    • Life Cycle and Generational Ecotypes
    • Pheromone Types and Pheromone Trapping
    • How Corn is Damaged
  • Management
    • Scouting Techniques
    • First Generation
    • Second Generation
    • Reaching a Management Decision
    • First Generation in Whorl-Stage Corn
    • Second Generation in Tassel-Stage or Later Corn
    • Cost-Benefit
    • Timing Insecticide Treatment
    • Application Equipment
    • Resistant Varieties
    • Biological Agents
    • Transgenic Corn
    • Weather
    • Cultural Practices
  • Commodities
    • Sweet Corn
    • Popcorn
    • Seed Corn
    • Peppers
    • Snap Bean
      • Detection
      • Management Decisions
    • Cotton
    • Wheat
    • Potato
    • Other Crops
  • Predictive Models
  • Galleries
CommoditiesSnap Bean

Insecticide treatment should begin 8 to 10 days before bloom when an average of five or more moths per night are captured in local light traps or when egg masses found on nearby corn exceed 10 per 100 plants. Repeat treatments at 7-day intervals if moth captures in light traps average 5 to 10. Treat at 5-day intervals if moth captures average 10 to 20, treat every 4 days if captures average 20 to 50, and treat every 3 days if captures exceed 50 moths per night.

Iowa State University

Department of Entomology

Copyright © 2013 Iowa State University of Science and Technology. All rights reserved.