ToMV – Tomato Mosaic Virus
Type: Virus - Tobamovirus
Tomato Mosaic Virus is a world-wide virus disease that affects the growth of peppers and tomatoes. Symptoms include dark green mottling or mosaic appearance on the leaves, yellowing of leaves, and stunting of the plant. The leaves tend to be fern-like and younger leaves may be twisted. The tomatoes will will be deformed and have yellow spots and the interior is brown. Infected plants usually wilt and die. It can cause significant yield loss and even total crops losses. It is a seed-borne virus and can be spread by farm equipment, workers, clothing, and contaminated tools. The disease can stay alive in dead plant material for long periods of time. The infected plants should be removed and destroyed to avoid further infestation. Plan on using a 2 year crop rotation and avoid planting in the same location, year after year, as the disease can survive in over winter on crop debris for 50 years. Keep your garden weed free. The best option is to use disease resistant varieties.
TSWV – Tomato Spotted Wilt Virus
Type: Virus - Tospovirus
Tomato Spotted Wilt Virus is a world-wide virus disease that affects the growth of peppers and tomatoes. Symptoms include bronzing of the upper sides of young leaves, which later develop distinct yellow or brown rings. Leaves may curl inward. The plants will be stunted and have dark streaking on stems. The tomatoes will be deformed. There will be mottled light green rings with raised centers with orange and red discoloration patterns on mature tomatoes making them unmarketable. Infected plants usually wilt and die. It can cause significant yield loss and even total crops losses. The virus is spread by thrips. The disease can stay alive in dead plant material for long periods of time. The infected plants should be removed and destroyed to avoid further infestation. Plan on using a 3 year crop rotation and avoid planting in the same location, year after year. Insecticides for thrips have limited value in controlling the disease as thrips transmit the disease very quickly when they begin to feed on the plant. To control thrips, try setting out yellow or blue colored sticky traps and treat plants with insecticidal soaps. Keep your garden weed free. The best option is to use disease resistant varieties.