• Alfalfa Caterpillar/Butterfly

      Knowles, Tim C.; Entomology (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1998-08)
      The first sign of a potential alfalfa caterpillar (Colias eurytheme) outbreak is the influx of large numbers of yellow or white butterflies in late spring or early summer. This publication discusses the biology of the alfalfa caterpillar, the damage it causes, the biological and cultural controls, and the treatments for it.