Solution:

The green ear disease of Bajra is a common disease and has been reported from several countries including India, Iran, Israel, China, Fiji, Japan and the countries wherever Bajra crop is grown.
Symptoms of Green Ear Disease:

Two stages of the symptoms of the disease have been recorded: the downy mildew stage prominent on the leaves and the green ear stage affecting the inflorescence (ears). The latter is more prominent than the former symptom since it has been reported that the strain of the pathogen occurring in India produces more oospores than the sporangia.

The growth of the plants affected is checked and the plants appear stunted and sick, pale yellow in colour. Even young plants show this symptom. Soon, the leaves begin to show chlorosis in streaks on the upper surface while the lower surface shows downy growth of the fungus.