Symptoms
- Characteristic symptoms are development of typical chlorotic spots on the leaves, as the disease advances, severe necrosis of the leaves is noticed.
- Gradually, the extent of chlorotic areas increases.
- Veins and vein lets also show necrotic symptoms. Necrotic symptoms are also noticed in stem, growing point, buds, pods etc.
- Finally the entire plant dries up.
Epidemiology
The virus belongs to the genus Tospovirus of the family Bunyaviridae which includes several viruses that are a serious threat to peanut, tobacco, vegetables, ornamentals and other commercially important crops. They are exclusively vectored by several species of thrips in a circulative and propagative manner. This virus is also transmitted by mechanical means.
Procedure for Observation
Select 25 plants at random and observe for mosaic symptoms