Advances in Sagalassa valida Walker management, the oil palm root borer
Author
Casteblanco, Javier
Aldana de la Torre, Rosa C.
Calvache G., Hugo H.
Zambrano R., Jorge E.
Como citar
Publicación:
Revista Palmas; Vol. 21 Núm. especial, (2000); 180
0121-2923
Revista Palmas; Vol. 21 Núm. especial, (2000); 180
0121-2923
Abstract
The oil palm root borer, Sagalassa Valida Walker (Lepidoptera: Glyphipterigidae), is a plague that has acquired great economical importance ¡n the different palm zones of the country. Because it has not only been detected that it harms young palms, but also has been proved that it harms and causes severe loses to adult palms. The control of this insect has been directed towards the use of insecticide applied to the soil on the palm base. This application has lacked off technical criteria to guarantee its efficiency and the use of the empty bunch, as an efficient barrier which allows to keep low the insect incidence and also helps increase the emission of absorbent roots. Nevertheless, the use of the empty bunch is not generalized because of the low availability for all the plantations. This has promoted the search of other alternatives through the evaluation of factory residues such as the empty bunch, fiber and ash, a not woven cloth and rice shell. The test is been held on 22 months old palms, IRHO material in the Hacienda La Cabaña plantation. The preliminary results show that all treatments have a positive effect diminishing the incidence of the harm of the borer. The best treatment has been the fiber one, for 3.5 months after applied, the fresh damage has been lowed to zero, while the witness increased its damage up to 20.15%. Ükewise, the response of the palm producing new roots has been excellent, mainly relates to the fiber and ashes treatments, which have reached 53 to 41 % of new roots. El barrenador de las raíces de la palma de aceite, Sagalassa valida Walker (Lepidóptera: Glyphipterigidae), es una plaga que ha adquirido gran importancia económica en las diferentes zonas palmeras del país, debido a que no sólo se ha detectado causando daño en palma joven, sino que se ha demostrado que causa daños y pérdidas aún más severas en palma adulta. El control de este insecto ha estado dirigido a la utilización de insecticida aplicado al suelo en la base de las palmas sin criterio técnico que garantice la eficiencia de la aplicación y la utilización de tusa, como barrera eficiente que permite mantener baja la incidencia del insecto, además de ayudar a incrementar la emisión de raíces absorbentes. No obstante, el uso de la tusa no es generalizado debido a la poca disponibilidad para todas las plantaciones, lo que ha llevado a la búsqueda de otras alternativas mediante la evaluación de desechos de fábrica como la tusa, fibra y ceniza, una tela no tejida y cascarilla de arroz. El ensayo se está realizando en palma de 22 meses de siembra, material IRHO en la plantación Hacienda La Cabaña. Los resultados preliminares muestran que todos los tratamientos tienen un efecto positivo disminuyendo la incidencia del daño del barrenador. El tratamiento mejor ha sido el de fibra, en el cual 3.5 meses después de aplicado, el daño fresco ha bajado a cero, mientras que el testigo incrementó su daño hasta un 20.15%. Así mismo, la respuesta de la palma a producir raíces nuevas ha sido excelente sobre todo en los tratamientos fibra y ceniza que han alcanzado un 53% y 4 1% de raíces nuevas.
The oil palm root borer, Sagalassa Valida Walker (Lepidoptera: Glyphipterigidae), is a plague that has acquired great economical importance ¡n the different palm zones of the country. Because it has not only been detected that it harms young palms, but also has been proved that it harms and causes severe loses to adult palms. The control of this insect has been directed towards the use of insecticide applied to the soil on the palm base. This application has lacked off technical criteria to guarantee its efficiency and the use of the empty bunch, as an efficient barrier which allows to keep low the insect incidence and also helps increase the emission of absorbent roots. Nevertheless, the use of the empty bunch is not generalized because of the low availability for all the plantations. This has promoted the search of other alternatives through the evaluation of factory residues such as the empty bunch, fiber and ash, a not woven cloth and rice shell. The test is been held on 22 months old palms, IRHO material in the Hacienda La Cabaña plantation. The preliminary results show that all treatments have a positive effect diminishing the incidence of the harm of the borer. The best treatment has been the fiber one, for 3.5 months after applied, the fresh damage has been lowed to zero, while the witness increased its damage up to 20.15%. Ükewise, the response of the palm producing new roots has been excellent, mainly relates to the fiber and ashes treatments, which have reached 53 to 41 % of new roots.
Palabras clave:
palma de aceite
elaeis guineensis
enfermedades de las plantas
sagalassa valida
sistema radicular
palma de aceite
elaeis guineensis
enfermedades de las plantas
sagalassa valida
sistema radicular