Remove and destroy plant debris at the end of the season.Ĭommercial growers can find information on fungicides in the Vegetable Production Guide for Commercial Growers (ID-36) and the Southeast U.S.Clean and sanitize tools, pots, and equipment.Remove and destroy infected plants or plant parts. Utilize cultivars with resistance or tolerance to diseases.Purchase certified disease-free seeds or transplants.Early blight is caused by the fungal pathogen Alternaria linariae.įigure 3: Septoria leaf spot symptoms include the development of circular lesions with tan-brown centers on stems, petioles, and leaves.
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