On April 15, Tom Hillyer from West Liberty in Muscatine County found alfalfa weevils actively feeding. This feeding matches our projected scouting date based on base-48 degree-days in southeast Iowa. Effective management of alfalfa weevil depends on four steps:
- timely scouting,
- correct identification,
- effective scouting, and
- determining control strategies
Iowa State University
Pope, Richard O., "Alfalfa weevils active in Iowa" (1998). Integrated Crop Management News. 2250.
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