Evaluación de la actividad acariciada del aceite esencial de congona (Peperomia inaequalifolia)
The effectiveness of essential oil of Congona (Peperomia inaequalifolia), was evaluated as a natural acaricide in controlling the Tetranychus urticae mite, which destroys the Rosa spp, varieties Freedom, Señorita and Cherry on; the mites were collected in block 4 of Rancho San Jorge. We stablished 5...
| Autor Principal: | Grijalva Sanguña, Paola Teresa |
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| Otros Autores: | Tapia Chiriboga, Andrés David |
| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: |
http://dspace.ups.edu.ec/handle/123456789/9406 |
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The effectiveness of essential oil of Congona (Peperomia inaequalifolia), was evaluated as a natural acaricide in controlling the Tetranychus urticae mite, which destroys the Rosa spp, varieties Freedom, Señorita and Cherry on; the mites were collected in block 4 of Rancho San Jorge. We stablished 5 concentrations of essential oil, combined with Ethanol at 50%, on rose leafs of 5 cm in diameter, infested with 15 adult mites each one, placed in polypropylene bottles with seven replicates for each concentration (group), using as witness Acequinocilo 15,6%. It was determined that the DL50 at 24 hours is 0,17mg/kg. The DL50 was tested in field, with the concentrations of 0,32% and 0,16% of the recommended formula, using the same witness, gaining with the Congona 0,63% a higher efficacy index than the witness one, which killed a significant number of parasites, but its effect decreased before the first application. The durability of the Miristicina and the stability of the recommended organic miticide were assessed, rehearsing with the surfactants Tween 20, Tween 80, Sodium Lauril Sulfate and Ethanol at 50%. At the end of the experiments, the formulation for greater efficiency was obtained with Tween 20; besides, the total cost analysis of acaricide per liter was performed, obtaining the values ($11,60 and $1,09 U.S. dollars) for the concentration 0,32 and Kanemite, respectively. |
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