Abstract
Epidemics of potato late blight progressed more slowly in plots of intermediate-aged plants than in plots of older plants. The suppression of epidemics achieved by intermediate-aged plants relative to old ones was equivalent to the suppression achieved by weekly applications of chlorothalonil of as much as 0.30 kg a.i./ha. The age effect on epidemic development was most noticeable for late-season cultivars and least noticeable for early-season cultivars.
Resumen
Las epidemias del tizón tardío de la papa progresaron más lentamente en parcelas con plantas de edad intermedia que en parcelas con plantas de mayor edad. La supresión de las epidemias, lograda por las plantas de edad intermedia en relación a las de mayor edad, fue equivalente a la supresión lograda por aplicaciones semanales de chlorothalonil en proporciones de hasta 0,30 kg i.a./ha. El efecto de la edad fue más notable para cultivares de estación tardía y menos notable para cultivares de estación temprana.
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Fry, W.E., Apple, A.E. Disease management implications of age-related changes in susceptibility of potato foliage toPhytophthora infestans . American Potato Journal 63, 47–56 (1986). https://doi.org/10.1007/BF02855299
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DOI: https://doi.org/10.1007/BF02855299