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Symptoms of Rice Tungro Virus (RTV)

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RTV can appear at any time on rice right from seedling stage. The extent of crop damage and yield loss depends on the growth stage at the time of RTV infection.

Young leaves are pale green to yellow, while older leaves are reddish orange in colour. The range of discolouration depends on the age and nitrogen status of the crop, variety and weather conditions. Infected leaves often dry up quickly. If plants are infected during early stages, panicles may fail to emerge, or emerge bearing chaffy and shrivelled grains. RTV infection generally delays flowering and there is no uniformity in crop maturity. Green leafhoppers transmit tungro virus from infected plants.

File Courtesy: 
Directorate of Rice Research, Hyderabad
Photo Courtesy: 
Directorate of Rice Research, Hyderabad
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