Viral causal agent, Tomato Spotted Wilt Virus  belongs to the genus Tospovirus and is vectored by various thrips species

Symptoms: Ring spots can be seen on the leaves at the early stages. These symptoms will have dark ring spots at later stages. The plants will get stunted. Fruits will become small, crinkled and develop ring spots.

Management: Early detection of thrips using yellow sticky traps and active scouting methods can be effective in reducing the spread. Eliminate weeds which harbor the thrips populations. Roguing of infected plants is very important in reducing the spread of the disease through the various thrips sp. which are vectors for TSWV. Pesticide management of thrips is important to prevent secondary spread of the disease from few infected plants.

Check EDIS publication on “Tospoviruses (Family Bunyaviridae, Genus Tospovirus) for management options including use of UV-reflective mulches, systemic acquire resistance inducers and pesticides.

Additional reference: http://vegetablemdonline.ppath.cornell.edu/factsheets/Virus_SpottedWilt.htm