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| Andaló,Vanessa; Santos,Viviane; Moreira,Grazielle Furtado; Moreira,Camila Costa; Moino Junior,Alcides. |
| The increased corn planting grown in the late season crop and the use of a notillage planting system benefits the development of Spodoptera frugiperda, the main pest of corn crop. Thus, this study aimed to select entomopathogenic nematodes based on the mortality of S. frugiperda, and to adjust the nematode concentrations in the laboratory and evaluate the action of these organisms in greenhouse conditions. Seventeen nematode populations were tested at concentrations of 100, 250, and 500 infective juveniles (IJ)/larvae. The obtained data were submitted to the polynomial regression test. In the greenhouse, corn sowing was performed in plastic buckets with soil, corn straw, and water. After 7 days, Steinernema arenarium or Heterorhabditis sp. RSC02, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Fall army worm; Heterorhabditis; Steinernema. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000900002 |
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| Santos,Viviane; Ávila,Crébio J. |
| Liogenys suturalis Blanchard é uma das principais pragas de solo associada às culturas do milho, do trigo e da aveia no Sul do Mato Grosso do Sul. O objetivo deste trabalho foi estudar aspectos bioecológicos e comportamentais dessa praga. A pesquisa foi executada em vários municípios do estado, em condições de campo e laboratório, entre agosto de 2004 e dezembro de 2006. No laboratório foram determinados o período de incubação e a viabilidade dos ovos, o número de ínstares e caracteres sexuais de pupas e adultos. Foram estudadas a distribuição temporal do inseto ao longo do ano, o período de revoada e aspectos comportamentais da cópula. A viabilidade média dos ovos foi de 81,7% e o período médio de incubação de 22,8 ± 4,32 dias. Liogenys suturalis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Bioecologia; Coró-do-milho; Praga-de-solo. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000600005 |
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| Andaló,Vanessa; Santos,Viviane; Moreira,Grazielle F.; Moreira,Camila; Freire,Marcela; Moino Jr.,Alcides. |
| Spodoptera frugiperda (Smith, 1797) (Lepidoptera: Noctuidae) is considered to be the main pest of maize crops in Brazil. Entomopathogenic nematodes (EPN) may be used to control this pest and exhibit different, unique abilities to search for their hosts. The movement of EPN in relation to S. frugiperda was evaluated. To test for horizontal movement, a styrofoam enclosure filled with sand was divided into segments, nematodes were placed at the entrance to the enclosure and a larva was placed at the end of each division. The same approach was used to evaluate vertical movement; however, PVC pipes were used in this case. In general, the mortality was inversely proportional to the initial distance between host and nematodes. In the vertical displacement test,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spodoptera; Biological control; Behaviour; Strategy; Entomopathogenic. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000300008 |
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