Blight spores can survive in the soil for three or four years. Only plant tomatoes in the same bed every three to four years, and remove and burn tomato refuse in the fall.
Why do tomatoes blight?
Tomato blight is caused by a fungus called Phytophthora infestans . It spreads via airborne spores. This particular type of fungus requires poor airflow and hot humid conditions to flourish. This fungus is responsible for late and early tomato blight.
One common answer is, early tomato blight is caused by a fungus that spreads by spores on the wind, by human contact, or by water splashing infected soil onto the lower leaves of a plant.
How do you get tomato blight?
Time to act. Tomato blight, a fungal infection called Phytophthora infestans, spreads by wind and water-splash. It also attacks potatoes and is triggered by warm, wet conditions, making outdoor tomatoes more susceptible than those in a greenhouse .
We learned it is vital that gardeners understand late blight isn’t like any other tomato and potato diseases . You will see pale green, water-soaked spots on the leaves, and these quickly turn into dark spots. Additionally, stems also turn black.
Our answer is early blight is also a problem with potatoes. How does tomato blight spread? Blight spreads by fungal spores that are carried by insects, wind, water and animals from infected plants, and then deposited on soil. The disease requires moisture to progress, so when dew or rain comes in contact with fungal spores in the soil, they reproduce.
Can tomato blight survive the winter?
Late tomato blight is caused by a fungus that spreads by spores on the wind or by surviving the winter in infected potato tubers. Both early and late tomato blight can survive the winter, and can affect tomato and potato plants .
What causes spots on tomato plants?
Early Blight Early blight can be caused by either one of the fungi types, Alternaria Tomatophilia and Alternaria Solani. This blight resembles rings and presents first on the leaves and quickly progresses to the plant stem. The spots also show on the tomato, soon developing into large bruises .