Bio-Ecology of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) on Tomato

Herlinda, Siti (2005) Bio-Ecology of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) on Tomato. AGRIA, 2 (1). pp. 32-36. ISSN 1829-779X

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    Laboratory research were conducted to quantify biological attributes of fruitworm, Helicoverpa armigera (Hübner) on tomato, and followed by observing its population development and fruit damage by this pest in the tomato field. Direct and continuous observation were done, and the data collected were tabulation analysed. The results showed that developmental time from egg laid up to first instar emergence (egg stadium) was 2.12 days. The eggs laid by individual moth amounted to 263.12 eggs. The egg fertility was an average of 76.52%. Larval stadia took 36.25 days. Mean developmental time of pupae were 10.2 days. The longevity of the adult ranged from 2 to 18 days with an average of 11.12 days. The oviposition by the moth coincided with the commencement of tomato flowering. Egg and larval population peak occurred at 40 and 75 days after planting, respectively. High larval population caused fruit damage by larval feeding activities increased.

    Item Type: Article
    Uncontrolled Keywords: Biology, ecology, Helicoverpa armigera, tomato
    Subjects: S Agriculture > S Agriculture (General)
    S Agriculture > SB Plant culture
    Divisions: Faculty of Agriculture > Department of Plant Pests and Diseases
    Depositing User: Unsri Admin
    Date Deposited: 22 Jan 2012 04:38
    Last Modified: 06 Mar 2012 21:14

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