| Journal: | Revista ciencia agronomica |
| Database: | PERIÓDICA |
| System number: | 000267662 |
| Authors: | Silva, Leonardo Dantas da1 Bleicher, Ervino Okumura, Helen Harumi Goncalves, Manoel Eneas de Carvalho |
| Institutions: | 1Universidade Federal do Ceara, Departamento de Fitotecnia, Fortaleza, Ceara. Brasil |
| Year: | 2007 |
| Volumen: | 38 |
| Number: | 1 |
| Pages: | 69-73 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | The objective of this research was to obtain dose-mortality curves and verify the stability of pyridaben and endosulfan for Bemisia tabaci Biotype B adults, using the Bristol papers technique inside glass tubes. Initially, each insecticide was diluted in six concentrations varying from 50 to 800 mg of pyridaben/L of acetone and from 87.5 to 2450.0 mg of endosulfan / L of acetone. Other bioassay was prepared in only one concentration of 800 and 2450 mg of active ingredient (a.i.) of pyridaben and endosulfan, respectively, for each acetone liter. Bristol papers were dipped in each insecticide treatment. They were dried and introduced in a glass tube. Each one received about 120 adult whiteflies. After three hours insect mortality was recorded in each tube. We observed an increasing mortality of B. tabaci among the concentrations; and the maximum mortality was reached with 962,0 mg of pyridaben/ L and with 2029, 0 mg of endosulfan/L. Pyridaben at 800 mg a.i./L and endosufan at 2450 mg a.i./L were stabilized over 12 days |
| Portuguese abstract | O objetivo desta pesquisa foi obter curvas de resposta e verificar a estabilidade dos inseticidas piridabem e endosulfan para adultos de Bemisia tabaci biótipo B, utilizando a técnica de cartão impregnado com resíduo de inseticida no interior de tubo de vidro. Inicialmente, cada inseticida foi diluído em seis diferentes concentrações, variando de 50 a 800 mg de piridabem/L de acetona e de 87,5 a 2450,0 mg de endosulfan/L de acetona. Outro bioensaio foi preparado em uma única concentração de 800 e 2450 mg do i.a. de piridabem e endosulfan, respectivamente, por litro de acetona. Os cartões foram imersos na calda inseticida, secos e acondicionados em tubos de vidro recebendo 120 adultos do inseto, sendo registrado após três horas a mortalidade. Verificou-se que houve mortalidade crescente de B. tabaci, e que a máxima foi alcançada com 962,0 mg de piridabem/ L e de 2029,0 mg endosulfan/L. Houve estabilidade do piridabem na concentração de 800 mg i.a./L e o endosulfan na concentração de 2450 mg i.a./L ao longo de 12 dias |
| Disciplines: | Biología, Agrociencias |
| Keyword: | Insectos, Fitopatología, Mosca blanca, Bemisia tabaci, Insecticidas |
| Keyword: | Biology, Agricultural sciences, Insects, Phytopathology, Whitefly, Bemisia tabaci, Insecticides |
| Full text: | Texto completo (Ver HTML) |
