Abstract
Tesfaendrias, M. T., Trueman, C. L., Gossen, B. D., McKeown, A. W. and McDonald, M. R. 2014. The influence of nitrogen and calcium fertilizers on septoria late blight and yield of celery. Can. J. Plant Sci. 94: 1391-1399. Late blight (Septoria apiicola) reduces both yield and quality of fresh market and processing celery. Field trials were conducted over 4 site-years to evaluate the effect of nitrogen (N) rate and foliar calcium (Ca) fertilization on the development of late blight and yield on celery grown on muck soils, which have a high organic matter (OM) content. A treatment with the protectant fungicide chlorothalonil was included to determine if fertilizer could replace fungicide application in celery production. There was a cultivar×site-year interaction for each of the disease and yield variables. Repeated application of chlorothalonil fungicide reduced late blight and generally increased plant height, weight and marketable yield. The rate of N applied had a small effect on late blight, which vari...
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