Early Tomato Blight - Knowledgebase Question

Feeding Hills, MA
Question by jjhayes
July 10, 2000
My tomato plants appear to have early blight. I grow the tomatoes in containers. I change the soil each year. Is there anything I can do to correct the problem and save this year's tomatoes?


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Answer from NGA
July 10, 2000

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Early blight is caused by a fungus that can live on foliage, fruit, even seeds. The best you can hope for is to get your plants through the season without too much damage. Pick off the first damaged leaves that you see to slow down the disease begin spraying compost tea on your plants every 2-3 weeks during the summer. You can make the tea by adding 1 part aged compost that contains some manure to 5 parts water and letting the mixture sit in the shade for 2 weeks. Then strain through cheesecloth and spray the liquid on your plants. The tea contains fungi that outcompete the blight fungi.

As general precautions, avoid planting tomatoes where either tomatoes or potatoes grew the year before, and choose varieties with flat, uncurled leaves, which are less susceptible. Good luck with your crop!

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