Abstract
Potato early dying disease, caused byVerticillium dahliae, may be either suppressed or controlled by a variety of procedures. These methods include the growing of resistant cultivars, attention to cultural management, utilization of pesticides, and solar heating of soils. The greatest successes in control of Verticillium wilt have been achieved with the use of either soil fumigants or clonal resistance, but these approaches have been restricted. Widespread use of fumigants has been limited by cost, and the lack of commercial acceptance has often restricted the utilization of resistant potato cultivars. The Katahdin and Targhee cultivars are currently available with resistance and/or tolerance to this disease. The Russet Burbank potato also possesses a limited degree of resistance to the fungus, and with this resistance, the disease appears to be suppressed by optimal growing conditions. In potato fields that have been cropped for several years, disease suppression in Russet Burbank was found to be related to methods of irrigation and increased nitrogen availability. It is suggested that improved utilization of resistant germplasm and effective use of biological control strategies may ultimately lead to economical control of this disease.
Resumen
La enfermedad de la muerte prematura de la papa, causada porVerticillium dahliae, puede ser eliminada o controlada por varios procedimientos. Estos métodos comprenden el cultivo de cultivares resistentes, atención prestada al manejo del cultivo, utilizatión de insecticidas y fungicidas y el calentamiento solar de los suelos. Los más grandes éxitos en el control de la marchitez por Verticillium se han logrado mediante el uso de fumigantes de suelos o resistencia clonal, pero estos métodos han sido restringidos. La aplicación amplia de fumigantes ha sido limitada por el costo y, a menudo, la falta de aceptación comercial ha restringido la utilización de cultivares resistentes de papa. Los cultivares Katahdin y Targhee están actualmente disponibles con resistencia o tolerancia a esta enfermedad, o con la combinación de ambas. Russet Burbank también tiene un grado limitado de resistencia al hongo y, con esta resistencia, la enfermedad parece ser vencida mediante condiciones óptimas de cultivo En los campos de papa que han sido cultivados durante varios años, se encontró que la eliminación de la enfermedad en Russet Burbank estuvo relacionada con los métodos de irrigación y un aumento en la disponibilidad de nitrógeno. Esto sugiere que una utilización mejor del germoplasma resistente y el uso efectivo de las estrategias del control biológico pueden finalmente llevar a un control de esta enfermedad, que sea económico.
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Davis, J.R. Approaches to control of potato early dying caused byVerticillium dahliae . American Potato Journal 62, 177–185 (1985). https://doi.org/10.1007/BF02852975
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DOI: https://doi.org/10.1007/BF02852975