22. Phyllosticta hortorum – a causal agent of tomato leaf spot

During the period 2008-2012 a new type of leaf spot disease was observed on field-tomatoe crop. The first symptoms appeared on the lower leaves, but in a short time they spread on the intermediate and upper leaves, and caused necrosis and wilting. A critical period for the disease appearance and development are the months of July and August. The causal agent was identified as Phyllosticta hortorum – а new pathogen for the Bulgarian flora.