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Control of Helicoverpa armigera Lepidoptera: Noctuidae in soybean with chemical and biological insecticides. E-mail: cassianok gmail. E-mail: rkuss yahoo. E-mail: mcristina. O objetivo deste trabalho foi avaliar o desempenho de inseticidas autorizados emergencialmente para o controle de Helicoverpa armigera Lepidoptera: Noctuidae em soja. Em campo, seis inseticidas foram pulverizados e, em seguida, as plantas foram infestadas com lagartas de 2 o e 3 o instar.
Flubendiamida, clorantraniliprole e clorfenapir apresentaram o menor tempo letal para o 4 o instar, e flubendiamida e clorantraniliprole, para o 2 o instar.
The objective of this work was to evaluate the performance of insecticides authorized on an emergency basis to control of Helicoverpa armigera Lepidoptera: Noctuidae in soybean.
Seven insecticides were sprayed on the field and, 24 hours after that, soybean pointer leaves were collected and offered to 2 nd instar larvae in the laboratory. Fourth instar larvae received the last trifoliate leaf that was fully expanded at the time of spraying. Another larvae group was exposed to leaves collected from 72 hours onwards after spraying. In the field, six insecticides were sprayed, and then the plants were infested with 2 nd and 3 rd instar larvae.
Flubendiamide, chlorantraniliprole, and chlorfenapyr showed the lowest lethal time for the 4 th instar, and flubendiamide and chlorantraniliprole for the 2 nd instar. Seventy-two hours after spraying, the performance of insecticides was not satisfactory. In the field, there was satisfactory efficiency of flubendiamide, spinosad, baculovirus, and Bt on 2 nd and 3 rd instar larvae.
Poucos meses depois foi registrada no Paraguai Senave As lagartas de H. A lagarta H. Os tratamentos consistiram em diferentes inseticidas, aplicados no limite inferior da dose registrada no Mapa para o controle de Helicoverpa spp. Cada unidade experimental foi composta por uma lagarta individualizada em copo de PVC de mL com tampa, contendo folhas de soja de cada tratamento. Para lagartas de 3 o instar, Gupta et al. O TL80 foi superior a 11 dias em todos os tratamentos.
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Abstract: The objective of this work was to evaluate the performance of insecticides authorized on an emergency basis to control of Helicoverpa armigera Lepidoptera: Noctuidae in soybean. Recebido: 30 de Novembro de ; Aceito: 19 de Outubro de How to cite this article.
Danos e comportamento larval de helicoverpa armigera (hübner) (lepidoptera: noctuidae) em soja
Control of Helicoverpa armigera Lepidoptera: Noctuidae in soybean with chemical and biological insecticides. E-mail: cassianok gmail. E-mail: rkuss yahoo. E-mail: mcristina.
We'd like to understand how you use our websites in order to improve them. Register your interest. The polyphagous Helicoverpa armigera Lepidoptera: Noctuidae causes significant agricultural losses worldwide. This pest has recently expanded its range into South America. Since its first report in north-western Argentina, H. Five COI haplotypes and three Cytb haplotypes were detected among ten sequenced specimens seven haplotypes if considering concatenated sequences.
The rapid detection of invasive pests is essential to eradicate them and prevent establishment. However, an extremely similar species, H. Helicoverpa armigera and H. Both species are attracted to the same pheromone lure, and it takes considerable time and effort to identify them from bulk samples obtained during trap monitoring. Although several molecular approaches based on PCR have been reported, these methods require expensive equipment and are unsuitable for onsite diagnostics. Here, we developed a rapid and convenient diagnostic method based on the loop-mediated isothermal amplification to distinguish H. The diagnostic method makes it possible to detect H.