Role of Si in the performance of palms suffering spear rot on a commercial oil palm plantation in Quepos, Costa Rica
Publicación:
Revista Palmas; Vol. 28 Núm. especial, (2007); 389-393
0121-2923
Revista Palmas; Vol. 28 Núm. especial, (2007); 389-393
0121-2923
Abstract
Silicon has been many times related to disease tolerance. This paper describes the results of semi-commercial tests in which the effect of a silicon source was assessed in the evolution of spear rot foci in the Quepos Division. Complete fruit centers of 1,1 ha in average were used as experimental plots in which an alternate application of 30 kg of Si per ha were applied. Complementary fertilization to the treatments was very similar in N, P, K, Mg and B. The application took place in 148 plots in an experimental area of 144.4 hectares. The percentage of healthy, sick and under recovery palms was assessed as a response variable. The Vegetative Recovery Rate was also assessed as a result of the number of palms under recovery among the total number of accumulated sick palms. Highly significant differences were found among the treatments after 1 year of evaluations. The most outstanding result was that the plots that received Silicon increased their recovery in 62% and 94% in the two assessed cases En muchos cultivos el silicio ha sido relacionado con tolerancia a enfermedades. El presente informe describe los resultados de pruebas semi-comerciales donde se evaluó el efecto de una fuente de silicio en la evolución de focos de flecha seca en la División de Quepos. Centros fruteros completos de 1,1 hectárea en promedio fueron utilizados como parcelas experimentales en las cuales alternadamente se aplicó el equivalente a 30 kg de Si/ha. La fertilización complementaria a los tratamientos fue similar en N, P, K, Mg y B. En total fueron aplicadas 148 parcelas, en un área experimental total de 1.44.4 hectáreas. Como variable de respuesta se evaluó el porcentaje de palmas sanas, palmas enfermas y en recuperación. Además, se evaluó el Índice de Recuperación Vegetativa, como una razón de la cantidad de palmas en recuperación entre el total de palmas enfermas acumuladas. Al cabo de un año de evaluaciones se observaron diferencias altamente significativas entre los tratamientos, encontrándose que aquellas parcelas que recibieron silicio lograron aumentar la recuperación en 62 por ciento y 94 por ciento en los dos casos evaluados.
Silicon has been many times related to disease tolerance. This paper describes the results of semi-commercial tests in which the effect of a silicon source was assessed in the evolution of spear rot foci in the Quepos Division. Complete fruit centers of 1,1 ha in average were used as experimental plots in which an alternate application of 30 kg of Si per ha were applied. Complementary fertilization to the treatments was very similar in N, P, K, Mg and B. The application took place in 148 plots in an experimental area of 144.4 hectares. The percentage of healthy, sick and under recovery palms was assessed as a response variable. The Vegetative Recovery Rate was also assessed as a result of the number of palms under recovery among the total number of accumulated sick palms. Highly significant differences were found among the treatments after 1 year of evaluations. The most outstanding result was that the plots that received Silicon increased their recovery in 62% and 94% in the two assessed cases
Palabras clave:
palma de aceite
elaeis guineensis
silicio
control de plagas
pudrición del cogollo
palma de aceite
elaeis guineensis
silicio
control de plagas
pudrición del cogollo