Control of botrytis blight of easter lilies with systemic fungicides
Albert O. Paulus
John G. Bald
Authors AffiliationsJohn Lenz is Farm Advisor and County Director, Agricultural Extension Service, Humboldt and Del Norte counties; Albert O. Paulus is Extension Plant Pathologist, University of California, Riverside; John G. Bald is Professor of Plant Pathology, University of California, Riverside.
Hilgardia 23(2):18-19. DOI:10.3733/ca.v023n02p18. February 1969.
BOTRYTIS or “fire”; in Easter lily foliage and flowers is a devastating disease in the lily growing areas of southwest Oregon and northwest California. Botrytis foliage blight is caused by the fungus, Botrytis elliptica. The disease causes a tear-drop shaped lesion on the leaves and may completely defoliate plants not protected by a suitable fungicide. Through a magnifying hand lens the mycelium of the fungus can be seen growing on the surface of the leaf. The fungus is especially prevalent during periods of cool, wet weather.
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