Integrated Crop Management News

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As noted in the May 28, 2001, Integrated Crop Management newsletter, alfalfa fields should have been scouted for variegated cutworms following the first cutting. Variegated cutworms are now causing a delay in alfalfa regrowth in scattered locations across Iowa. Some cutworms are nearly full grown at 11/4-11/2 inches but others are only 5/8-3/4 inch in length. These smaller cutworms will continue to feed for another 21-24 days, depending on weather conditions. Large areas of fields or areas that were under windrows that have not regrown should be scouted for variegated cutworms.

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Iowa State University



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