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635.64:632.786 (1) |
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SM ISO690:2012 КЕПТИНАРЬ, Валерия, НАСТАС, Тудор, РЭЙЛЯНУ, Наталья, ГОРБАН, Виктор. Анализ этологических и репродуктивных особенностей и динамики развития популяции Heliothis armigera на протяжении сезона. In: Ştiinţa Agricolă, 2017, nr. 1, pp. 44-48. ISSN 1857-0003. |
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Ştiinţa Agricolă | |||||||
Numărul 1 / 2017 / ISSN 1857-0003 /ISSNe 2587-3202 | |||||||
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CZU: 635.64:632.786 | |||||||
Pag. 44-48 | |||||||
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Information on the fertility of female cotton bollworms and the viability of their laid eggs makes it possible to predict the number of next generation in the crop fields and the harm that this population may cause to the harvest. During the vegetative season of 2016 (the 1st decade of May - the 3rd decade of September), a seasonal monitoring of the Heliothis armigera pest population was carried out using a light trap installed in the immediate vicinity of a soybean field. Due to the conducted research, the emergence and peaks of the cotton bollworm flight were recorded, sex ratio wes determined, as well as reproductive and copulative potential of females were estimated. It was established that in the climatic conditions of the Republic of Moldova, Heliothis armigera pest develops in three generations. The duration of generation development is from the 3rd decade of May to the 3rd decade of September. Male-female ratio was 58% males to 42% females. The copulative and reproductive potential of this pest depends on the succession of generations. The reproductive potential of the first generation was 37.8%, 40.1% for the second generation and 22.1% for the third generation. The copulative potential of H. armigera females was of 65.0% paired 1-2 times and only 35.0% were paired 3-5 times. |
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Cuvinte-cheie Heliothis armigera, Динамика лета, Копулятивный потенциал, Плодовитость самок, Репродуктивный потенциал |
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