Abstract
STRANDBERG, J. 0., and J. M. WHITE. 1978. Cercospora apii damage of celery-effects of plant spacing and growth on raised beds. Phytopathology 68:223-226. Damage caused by Cercospora apii on leaves and petioles acceptable disease control) average infection rates (r) ranged of celery (Apium graveolens var. dulce) was measured on from -0.13 to -0.15 throughout the fall season, and 0.17 to plants grown at different plant spacings on both flat soil and 0.23 in the spring season. Hours of leaf wetness and disease on raised beds under conditions that simulated those in damage measured as percent leaf area infected or as numbers commercial production. Infection rates of Cercospora apii of diseased petioles per plant requiring removal at harvest were not affected either by plant spacing or by growth on time did not differ significantly among plant-spacing or bedraised beds. In celery plots that received weekly fungicide height treatments, nor did yields or stalk weights vary applications (which were necessary for commercially significantly among comparable plant populations.
Published Version
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