Management

Management

Control Methods and Injury Assessment

diseased western corn rootworm beetle; photo by John Obermeyer, Purdue Extension Entomology

Biological and Cultural Control

Biological and Cultural Control

Quick test for corn rootworm Bt traits; photo by John Obermeyer, Purdue Extension Entomology

Control with Chemicals and Traits

Control with Chemicals and Traits

corn rootworm larval feeding, photo by Erin Hodgson.

How to Assess Injury

How to Assess Injury

Recent Regional News

2025 Regional Corn Rootworm Monitoring Network Summary
Jan 26, 2026
2025 Ontario CRW Trap Network Results
Dec 16, 2025
2024 Regional Corn Rootworm Monitoring Network Summary
Jan 13, 2025
2023 Regional Corn Rootworm Monitoring Network Summary
Dec 11, 2023
2023 Ontario Corn Rootworm Trap Network Report
Nov 9, 2023

Bt Trait Table & Seed Catalogs

2025 Handy Bt Trait Table
Feb 26, 2025
2024 Canadian Bt Trait Tables
Apr 3, 2024
2024 Handy Bt Trait Table (U.S.)
Jan 8, 2024
2023 Bt Trait Tables for Canada
Mar 9, 2023
2023 Handy Bt Trait Table (U.S.)
Mar 1, 2023

Efficacy Evaluations

2024 Iowa Evaluation of Insecticides and Plant-Incorporated Protectants
Dec 9, 2025
2023 Iowa Evaluation of Insecticides and Plant-Incorporated Protectants
Jul 16, 2024
2021 Iowa Evaluation of Insecticide and Plant-Incorporated Protectants
Aug 1, 2022
2021 Applied Research Results: Field Crop Disease and Insect Management
Apr 8, 2022
Summary of Corn Root Injury Evaluation in Southeast Iowa
Jul 21, 2021