Alfalfa weevil is a key insect pest on the first alfalfa cutting. Tip feeding should show up soon in established fields.
This insect occurs throughout the state, but sound management practices, weather patterns, and natural enemies often keep numbers below damaging levels in many fields.
Great natural mortality of alfalfa weevil can occur early in the weevil season. Strong winds and driving rain can knock small larvae to the ground where they perish. In addition, alfalfa can tolerate light feeding by the insect with no appreciable loss of yield or quality.