Alfalfa weevil activity has increased significantly in the last week throughout north-central Kansas. The recent warm weather has really stimulated egg hatch thus there are large numbers of very small first instar larvae just starting to feed, plus older, larger larvae that have been feeding for a week or so. However, some fields have very low infestation levels, while others have already reached the 100% infested level.
Alfalfa weevil, aphid activity observed