Tomato leaf mould
|Tomato leaf mould|
|a tomato leaf showing signs of mould|
|Cladosporium fulvum Cooke, (1878)
Fulvia fulva (Cooke) Cif., (1954)
Tomato leaf mould (Mycovellosiella fulva) is a fungal plant pathogen.
It usually becomes apparent on the lowest tomato leaves from early or midsummer. Purplish brown mould patches appear on the underside of the foliage - the upper surface bears yellowish patches. Lower leaves are attacked first.
Remove some of the lower leaves. Disinfect entire greenhouse. If the problem isn't tackled, tomato yields are lower and the fungus can overwinter in the greenhouse and persist the following year.
Spray infected plants with mancozeb.
Ventilate the greenhouse, especially at night. Avoid splashing plants when watering