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Title: Parasitoids and Predators of Insect Pests on Chrysanthemums in Hawaii 
Author: Hara, Arnold H.; Matayoshi, Shinsuke
Date: 1990
Publisher: Hawaiian Entomological Society
Citation: Hara AH, Matayoshi S. 1990. Parasitoids and predators of insect pests on chrysanthemums in Hawaii. Proc Hawaiian Entomol Soc 30:53-58.
Abstract: Trials were conducted at a commercial cut-chrysanthemum nursery in Mountain View, Hawaii to evaluate biological control of chrysanthemum insect pests. No chemical pesticides were applied throughout the growing season. Numerous parasitoids and predators of the agromyzid leafminer, Liriomyza trifolii (Burgess), the green peach aphid (GPA), Myzus persicae (Sulzer), and the variegated cutworm (VC), Peridroma saucia (Hubner), were recovered. The two dominant parasitoid species of L. trifolii, Diglyphus intermedius (Girault), and Ganaspidium utilis Beardsley, provided biological control during the first 7 to 9 weeks after planting when the unmarketed portion of the chrysanthemum foliage was growing. Additional biorational or chemical control methods are necessary for GPA. VC, and L. trifolii when their damage affects the marketable portion of the crop.
Pages/Duration: 6 pages
ISSN: 0073-134X

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