Krsteska, Vesna and Tashkoski, Petre and Stojanoski, P. (2014) Biological characteristics of Helicoverpa armigera Hbn and quantitative representation on tobacco. In: Зборник од Юбилейна международна научна конференция „70 години Институт по тютюна и тютюневите изделия“, 13-14 November, Plovdiv, Bugarija.
Full text not available from this repository.Abstract
H. armigera larvae greedily feed on tobacco, esspecially on reproductive organs of tobacco plants, where they cause serious damages on tobacco seed.
In laboratory conditions (25 °C) eggs hatch in about three days, larvae develop over 19-24 days, pupae over 11-20 days and longevity of adults is about 3 weeks.
Larvae of different generations usually overlap. During the mid-summer to autumn, comes to population increasing on tobacco. The percentage of tobacco stalks attacked in middle plots is lower compared with margin plots.
During the investigations 2011-2013, H. armigera occurs with a different quantitative representation, population is highest in 2011.
| Item Type: | Conference or Workshop Item (Poster) |
|---|---|
| Uncontrolled Keywords: | tobacco, H. armigera, quantitative representation |
| Subjects: | Scientific Fields (Frascati) > Agricultural Sciences > Agriculture, forestry and fisheries |
| Divisions: | Scientific Tobacco Institute |
| Depositing User: | Ms Biljana Jordanoska |
| Date Deposited: | 08 Oct 2016 22:44 |
| Last Modified: | 08 Oct 2016 22:44 |
| URI: | https://eprints.uklo.edu.mk/id/eprint/310 |
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