Evaluación del efecto insecticida de hojas de Peumus boldus Molina para el control de la vaquita del olmo, Xanthogaleruca (Pyrrhalta) luteola Müller (Coleoptera: Chrysomelidae)
Fecha
2009
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad de Chile
Resumen
Se evaluó el efecto insecticida de extractos de hojas de boldo (Peumus boldus) utilizando agua y etanol como solventes, en varias concentraciones, para controlar Xanthogaleruca luteola en laboratorio. Se compararon harinas de follaje juvenil y maduro. Los extractos mostraron una mortalidad superior al 75% en adultos de X. luteola con hojas juveniles a concentraciones mayores. La CL50 más baja fue del 1% con etanol a los 2 días. Se observaron diferencias significativas en rendimiento, humedad, cenizas y fibra cruda entre hojas juveniles y maduras. El desarrollo de pupas y adultos duró 7 y 21 días, respectivamente.
Abstract The insecticidal effect of extracts made from boldo (Peumus boldus) leaves using water and ethanol as solvents was evaluated at various concentrations to control Xanthogaleruca luteola in the laboratory. Juvenile and mature foliage flours were compared. The extracts showed over 75% mortality in X. luteola adults with juvenile leaves at higher concentrations. The lowest CL50 was 1% with ethanol at 2 days. Significant differences were observed in yield, moisture, ash, and crude fiber between juvenile and mature leaves. The development of pupae and adults lasted 7 and 21 days, respectively.
Abstract The insecticidal effect of extracts made from boldo (Peumus boldus) leaves using water and ethanol as solvents was evaluated at various concentrations to control Xanthogaleruca luteola in the laboratory. Juvenile and mature foliage flours were compared. The extracts showed over 75% mortality in X. luteola adults with juvenile leaves at higher concentrations. The lowest CL50 was 1% with ethanol at 2 days. Significant differences were observed in yield, moisture, ash, and crude fiber between juvenile and mature leaves. The development of pupae and adults lasted 7 and 21 days, respectively.
Descripción
Universidad de Chile, Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Escuela de Ciencias Forestales, Departamento de Silvicultura. Tesis para optar el título profesional de Ingeniero Forestal.
Asesor Dra. Amanda Huerta Fuentes Dr. Ítalo Chiffelle Gómez
Asesor Dra. Amanda Huerta Fuentes Dr. Ítalo Chiffelle Gómez
Palabras clave
Concentración Letal, Insecticidas Botánicos, Peumus Boldus (Boldo), Xanthogaleruca Luteola, Insectos