Degree-day information indicates that alfalfa weevil larvae are hatching throughout southern Iowa (see map). Proper management of this insect requires timely scouting, correct identification, determination of population levels, and if necessary, cultural or chemical control.
Iowa State University
Rice, Marlin E. and Pope, Richard O., "Scout alfalfa weevils during April" (2004). Integrated Crop Management News. 1504.
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