Insecticidal control of sweet potato weevils (Coleoptera: Curculionidae) in Hawaii

Authors

  • Devaiah A. Muruvanda Department of Entomology, University of Hawaii. Honolulu, Hawaii 96822 USA
  • John W. Beardsley Department of Entomology, University of Hawaii. Honolulu, Hawaii 96822 USA
  • Wallace C. Mitchell Department of Entomology, University of Hawaii. Honolulu, Hawaii 96822 USA

Keywords:

Insecticides, Weevils, Sweet potato, Hawaii

Abstract

Six insecticides applied at different dosages and pre-plant/post-plant spray combinations were evaluated in field trials for three seasons for control of the sweet-potato weevils Cylas formicarius elegantulus (Summers) and Euscepes postfasciatus (Fairmaire). Carbaryl applied as a preplant dip (at 3.33 ml Al I-1) and sprayed at 1.12 kg Al ha-1 at three-week intervals was the best treatment. Performances of other treatments are discussed.

Downloads

Issue

Volume 63 Number 2

Section

Research Papers