The fungus that causes this problem spreads rapidly in the warm, humid conditions of a greenhouse. It usually becomes apparent on the lowest tomato leaves from early or midsummer, which develop yellow blotches on the upper leaf surface. The leaves eventually turn brown and wither. If the problem isn't tackled, tomato yields are lower and the fungus can overwinter in the greenhouse and persist the following year.
Solution
Organic
Good ventilation in the greenhouse helps, with plants well spaced out. Avoid splashing the leaves when watering. Promptly remove and get rid of any infected leaves and destroy all the plants at the end of the season. Disinfect the entire greenhouse and choose resistant varieties such as 'Dombello' and 'Shirley'.
Chemical
Spray infected plants with mancozeb.
Comments and rating
Overall rating (from 1 ratings):
Thanks soooo much for the advice here on tomatoes. we have suffered for the last three years with the growing of tomatoes. At the moment we have plants that have Blossom End Rot and also Leaf Mould. At least now we can get it right for next year. Many thanks. Will be logging on to this site again and again....
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why are my green tomatos dropping off
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How do I access the answers to the questions asked by other gardeners please ?
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dianep rated this article
10 June 2009
4 out of 5
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