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Tomato Diagnostic Key, The Cornell Plant Pathology Vegetable Disease Web Page; Tomato Diseases (Fact Sheets and Information Bulletins), The Cornell Plant Pathology Vegetable Disease Web Page; Gautam, P. 2008. Bacterial Speck Disease of Tomato: An Insight into Host-Bacteria Interaction. GRIN Publishing
The older leaves are infected first and then the disease moves up towards young leaves. [2] Symptoms of tomato leaf mold appear usually with foliage, but fruit infection is rare. The primary symptom appear on the upper surface of infected leaves as a small spot pale green or yellowish with indefinite margins, and on corresponding area of the ...
Darkening lesions on tomato leaves Advanced necrosis on tomato leaf. Stemphylium solani is of greatest concern in tomatoes, potatoes, peppers, garlic, onions, and cotton, though a wide range of over 20 species have proven susceptible. In tomatoes and potatoes, the resulting disease is known as grey leaf spot. In alliums it is known as leaf ...
Alternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight. The pathogen produces distinctive "bullseye" patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato. Despite the name "early", foliar symptoms usually occur on older leaves. [3]
Septoria lycopersici infects the tomato leaves via the stomata and also by direct penetration of epidermal cells. [3] Symptoms generally include circular or angular lesions most commonly found on the older, lower leaves of the plant. [1] The lesions are generally 2–5 mm in diameter and have a greyish center with brown margins.
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In regards to the symptoms on the leaves of tomato plants, there is evidence of chlorosis as well as small, brown circular spots covering the leaves. The symptoms of the tomato fruit exterior include larger, brown circular deformations on the plant's exterior skin. These illustrations are important to note because they depict the symptoms of ...