Diaprepes abbreviatus (Coleoptera: Curculionidae): Oil Sprays as a Regulatory Treatment, Effect on Egg Attachment

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When Florida citrus spray oil (FC 435-66) or Volck spray oil was applied to Dracaena marginata foliage, the bond between Diaprepes abbreviatus (L.) eggs and the leaf surface was affected. The total D. abbreviatus eggs remaining on plants 1 week posttreatment were 160 for FC 435-66 at 10 ml of oil per liter of water and 17, 120 on check plants. There were 359 and 0 eggs on plants treated With Volck oil at 3.9 and 7.8 ml of oil per liter of water, respectively, compared to 3,391 eggs on check plants. Oil sprays had no significant effect on oviposition or weevil egg hatch. FC 435-66 or Volck spray oil at 10 and 7.8 ml/liter of water had no effect on the commercial quality of D. marginata plants. produced in Florida with cuttings from plants treated in Puerto Rico. The use of an oil spray in combmation With wind, sun, and rain mechanically reduced the number of D. abbreviatus eggs on D. marginata plants.

Document Type: Research Article

Publication date: December 1, 1983

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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