Natural enemies of temperate cereals insect pests
1991
Chiraphan Chantharathat (Department of Agriculture, Bangkok (Thailand). Entomology and Zoology Div., Rice Insect Research Group)
Field surveys of natural enemies of some temperate cereals insect pests were carried out in various wheat and barley after rice growing areas in the North and Northeast of Thailand in the crop year 1988/89-1990/91. All insects were collected from diverse plant growth stages and brought back to the laboratory for identification. A total of 75 natural enemies species were 46 species of parasites, 28 species of predators and 1 species of parasite and/or predator. The abundant and important insect parasites were Hymenopterans or wasps including brachonids, eulophids, ichneumonids, scelionids and trichogrammatids; the insect predators were coccinellid or ladybird beetles, lygaeidid bugs, agrionidid and coenagrionidid damselflies, gryllidid crickets and tettigoniidid grasshopper and the dryinid wasps of the genus Echthrodelphax exert the role of either parasite or predator. The result of this study could be useful in consideration of reducing insecticide application and further utilized as augmentative biological control agents for regulation of the insect pest population.
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This bibliographic record has been provided by Thai National AGRIS Centre, Kasetsart University
