ECOLOGY OF Liriomyza spp. (DIPTERA: AGROMYZIDAE) IN FIELD VEGETABLES IN SOUTH SUMATERA

Herlinda, Siti (2003) ECOLOGY OF Liriomyza spp. (DIPTERA: AGROMYZIDAE) IN FIELD VEGETABLES IN SOUTH SUMATERA. Proceedings of an International Seminar on Organic Farming and Sustainable Agriculture in the Tropics and Subtropics.

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    Abstract

    Surveys during January up to June 2003 were conducted to record host species of Liriomyza leaf miner, to determine the leafminer damage, to detect adult population of this leaf miner, and to identify the leafminer parasitoid species. Leafminer-infested leaves of host plants were collected every three weeks for determining the parasitoid species. This leafminer-infested leaves were also used to identify species of Liriomyza host plants. Leafminer adult population and damage on tomato leaves were recorded weekly. The population was monitored with yellow sticky traps. The result showed that a total of 53 species of plants could be infested by the leafminer. Foliage damage caused by leaf miner activity of Liriomyza larvae caused linear, irregular (serpentine), whitish or greenish mines. Heavily damaged crops appeared as if they had been scorched by fire. Throughout tomato growing season, level of foliage damage caused by the leafminer reached 40.33%. The adult population was associated with crop phenology and weather condition. Number of adults trapped increased with the increasing the crop age. The population during rainy days was generally low. We found six species of hymenopteran parasitoids associated with Liriomyza. The parasitoids found including Hemiptarsenus varicornis, Quadrasticus sp., Opius sp., Neochrysocharis sp., Granotoma sp., and one unknown species of Eulophidae. The most common parasitoid found was H. varicornis. The parasitism by this parasitoid reached 9.76% on cabbage field at Pagar Alam.

    Item Type: Article
    Uncontrolled Keywords: Host plant species, damage, population, parasitoids, Liriomyza spp., and vegetable crops
    Subjects: S Agriculture > S Agriculture (General)
    S Agriculture > SB Plant culture
    Divisions: Faculty of Agriculture > Department of Plant Pests and Diseases
    Depositing User: Candra Setiawan
    Date Deposited: 22 Jan 2012 03:18
    Last Modified: 22 Jan 2012 03:18
    URI: http://eprints.unsri.ac.id/id/eprint/232

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