Cedrela fissilis, Melia azedarach and Azadirachta indica extracts on Polyphagotarsonemus latus
The white mite Polyphagotarsonemus latus affects shoots and young leaves of the rubber tree, which may compromise production and cultivation. Thus, the objective was to determine the effect of extracts from different plant sources (Cedrela fissilis, Melia azedarach and Azadirachta indica) on the mor...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | Brasil |
| Institución: | Universidade Federal de Itajubá (UNIFEI) |
| Repositorio: | Research, Society and Development |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/5455 |
| Acceso en línea: | https://rsdjournal.org/index.php/rsd/article/view/5455 |
| Access Level: | acceso abierto |
| Palabra clave: | Alternative control rubber tree Mites Natural acaricide. Control alternativo Árbol de goma Acaros Acaricida natural. Controle alternativo Seringueira |
| Sumario: | The white mite Polyphagotarsonemus latus affects shoots and young leaves of the rubber tree, which may compromise production and cultivation. Thus, the objective was to determine the effect of extracts from different plant sources (Cedrela fissilis, Melia azedarach and Azadirachta indica) on the mortality of the white mite Polyphagotarsonemus latus. A completely randomized design was used and the extracts of Cedrela fissilis, Melia azedarach and Azadirachta indica and their concentrations (0, 5, 10, 20 and 40%) constituted the treatments. The extracts were obtained from fresh leaves of vegetable species, cleaned, dried and crushed to obtain vegetable powder. These were diluted in the proportion of 10, 20, 40 and 80 g / 100ml of ethyl alcohol, for each plant. After 24 h at rest, the materials were filtered and the residue mixed with deionized water in order to complete the volume of 200 ml. In Petri dishes containing a layer of moistened cotton, leaf discs of rubber tree leaves were deposited with the mites. Subsequently, there was spraying on the disks. After 24, 48 and 72 hours, mite mortality was evaluated. The data were submitted to analysis of variance. Skott-Knott means tests and regression analysis were used to compare the data. All extracts have an effect on increasing mite mortality. The periods of 48 and 72 hours were more expressive and, for the exposure of 72 hours, 28.39% of any of the three plant extracts is recommended. |
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