Disease:Amaranthus Bud Necrosis


  • 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.


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


  • Mere presence
  • Control Measures

  • Remove and destroy the affected plants.
  • Application of any one of the following insecticides at periodic intervals :Quinalphos 0.05% or Dimethoate 0.05%.Before applying insecticides harvest mature pods and those about to mature. Keep a waiting period of 7 days before the next harvest.