Friday, May 17, 2013

Why Are My Tomatoes Dying?

TSWV Symptoms
Since the mid 90’s, tomato spotted wilt virus (TSWV) has become one of the most serious diseases of tomatoes in our area. Infections of TSWV in our region usually first appear in May and peak in June. Always deadly, there is no way to treat TSWV and infected plants should be pulled up and discarded.

Tomato plants infected with TSWV may at first appear stunted and pale. Upon close inspection, you may notice unusual markings on the leaves. Sometimes these marking look like brown or black spots, other times they look like tattooed lines or circles. Spots may or may not be surrounded by yellow leaf tissue. The leaves of infected plants may curl inward, while the veins may turn purple, and plants often take on a bronze color. Usually these symptoms show up in the top leaves of the plant first, while most other tomato diseases show up on the lower leaves first. As the disease progresses, infected plants wilt and die, usually within a week of the first symptoms appearing.  Learn more:

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