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Control of Foliar Diseases on Tomatoes

July 25, 2014

Septoria leaf spot and early blight are common foliar diseases of tomatoes in home gardens.  Fungal diseases overwinter on plant debris in the soil.  Fungal spores are splashed onto plant foliage by raindrops or splashing water and invade the plant tissue when leaf surfaces are wet.  Rainy weather in spring and early summer favors development of foliar diseases on tomatoes.