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) > S1-(972) Agriculture (General)
S Agriculture > SB Plant culture > SB1-1110 Plant culture
Divisions: Faculty of Agriculture > 54295-Plant Protection (S1)
Depositing User: backup admin
Date Deposited: 09 Jan 2020 07:06
Last Modified: 09 Jan 2020 07:06

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