Causative agent: Rice Grassy stunt tenu virus

• Transmitted by Brown plant hopper.

Symptoms:

• Everely stunted plants
• Excessive tillering
• Very upright plant growth
• Grassy and rosette appearance of plants
• Yellowish green leaves that are shorter and narrower than normal
• Leaves that remain yellow even after application of sufficient nitrogen fertilizers
• Numerous small rusty spots or patches on leaves, which merge into blotches
• Plants that fail to produce panicles.
• The stunting and excessive tillering symptoms of rice grassy stunt can be confused for symptoms of rice yellow dwarf and rice dwarf disease.
• To confirm Rice grassy stunt virus, check for grassy or rosette appearance of plants and prominent rusty spots on the leaves.