Uso del Bacillus thuringiensis contra las larvas de Anomis illita (Lepidóptera) en viveros de Hibiscus elatus (Majagua)
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Abstract
Se estudió durante dos años la efectividad de dos biopreparados a base de B. thurigiensis (Dipel y Dedrobacillin) contra las orugas del defoliador de la majagua: Anomis illita Gueén. Este experimento se realizó en tres etapas: laboratorio, pequeñas parcelas y campo. El mismo consistió en la prueba de insecticidas microbiológicos en tres concentraciones diferentes en cada fase y en su comparación con los plaguicidas químicos permetrina (Ambush) y fensulfotion (Terracur P.). Cada 24 horas, se evaluó el porcentaje de larvas vivas en condiciones de laboratorio. Se registró el porcentaje de plantas dañadas a los 18, 32 y 46 días para la fase de pequeñas parcelas y a los 5, 10, 15 y hasta 40 en la de campo. Posteriormente se calculó la efectividad según la fórmula de Abbot.
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