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Article
Alfalfa Weevil Hatch is Early in 2012
Integrated Crop Management News
  • Erin W. Hodgson, Iowa State University
  • Adam J. Sisson, Iowa State University
Document Type
Article
Publication Date
4-2-2012
Abstract
Alfalfa weevil is an important defoliating pest in alfalfa. Heavy infestations can reduce tonnage and forage quality. Adults can feed on plants, but the larvae typically cause the majority of damage. Newly hatched larvae can be found feeding on terminal leaves, leaving newly expanded leaves skeletonized. Gradually maturing larvae (Fig. 1) move down the plant and begin feeding between leaf veins. Adults (Fig. 2) eat along the leaf margin, leaving irregular notches. A heavily infested field will look frosted or silver (Fig. 3).
Copyright Owner
Iowa State University
Language
en
File Format
application/pdf
Citation Information
Erin W. Hodgson and Adam J. Sisson. "Alfalfa Weevil Hatch is Early in 2012" (2012)
Available at: http://works.bepress.com/erin_hodgson/97/