Answer: Community gardening could help encourage this blight. Even if you are gardening in the same plot every year your plants can be infected from nearby plots. And septoria persists in the soil year after year. Some control measures include removing and destroying (burning) all plants in the fall after the harvest; clean cultivation/weed control, and crop rotation. You should also keep out of the garden when the plants are wet after a rain or watering -- the fungus is easily transmitted when you brushagainst the plants.
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