Abstract
There were 3 distinct periods during which 100% defoliation affected yield parameters of potatoes. Plants were especially susceptible to defoliation 3–5 weeks after 50% stand emergence. In a weekly defoliation study, the 29% defoliation level had no effect on yield but the weekly 58% level significantly reduced yield. An equation relating fresh plant weight to leaf area was developed.
Resumen
Se encontraron 3 períodos distintos durante los cuales defoliación del 100% afectó los parámetros de rendimiento de papa. Las plantas fueron especialmente susceptibles a defoliación 3–5 semanas después que el 50% emergieron. En un estudio de defoliación en períodos semanales, el 29% de defoliación semanal no afectó el rendimiento pero el 58% de defoliación semanal redujo el rendimiento significativamente. Se desarrolló una equación relacionando peso fresco de la planta con área foliar.
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Approved as TA-16016 by the Director, Texas Agric. Exp. Sta., College Station.
Formerly, Texas A&M University Vegetable Research Station, Munday, Texas
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Wellik, M.J., Slosser, J.E. & Kirby, R.D. Effects of simulated insect defoliation on potatoes. American Potato Journal 58, 627–632 (1981). https://doi.org/10.1007/BF02852593
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DOI: https://doi.org/10.1007/BF02852593