Summary
The use of weather-vane spore traps with vaseline coated slides is an effective means of timing initial fungicide applications for potato early blight control in Colorado. This technique is simple and more reliable than some methods currently being used. Effective control of early blight was achieved with fewer sprays by using this system rather than plant growth stage as the basis for initiating fungicide applications. The method promises to be most useful in areas where crops with diseases caused by fungi that produce spores similar to those ofA. solani are not grown in close association with potatoes.
Sumario en español
El uso de la veleta-trampa para atrapar las esporas de hongos en placas de vidrio cubiertas de vaselina, es un medio efectivo para determinar el momento oportuno para la aplicación inicial del fungicida en el control del tizón temprano de la papa en Colorado. Esta técnica es más simple y segura que algunos de los métodos usados comúnmente. El control efectivo del tizón temprano de la papa se obtuvo por este método, con menos aspersiones que cuando se usa el sistema que toma como base para la aplicación inicial del fungicida el estado de crecimiento de la planta. Este método parece tener más posibilidades en zonas donde las plantas se cultivan aisladas de aquellas que padecen enfermedades causadas por hongos que producen esporas similares a las deAlternaria Solani.
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Published with the approval of the Director, Colorado Agricultural Experiment Station as Scientific Journal Series No. 1018. Accepted for publication April 21, 1965.
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Harrison, M.D., Livingston, C.H. & Oshima, N. Control of potato early blight in Colorado. II. Spore traps as a guide for initiating applications of fungicides. American Potato Journal 42, 333–340 (1965). https://doi.org/10.1007/BF02869699
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DOI: https://doi.org/10.1007/BF02869699