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Control measures of Rice Grassy Stunt disease
Rice Grassy Stunt virus disease control measures include
- cultural methods and
- use of resistant varieties
Host-Plant Resistance of Rice Grassy Stunt disease
1. The grassy stunt virus is transmitted by the Brown Planthopper Nilaparvata lugens Stal.
2. Disease can also be transmitted by Nilaparvata bakeri Muir and N. muiri China.
3. The interaction between the virus and its vector is persistent without transovarial passage.
4. The insect acquires the virus during 30 minutes of feeding period.
5. The plants can be infected in as little as 9 minutes of feeding. Incubation in the insect takes around 5-28 days with an average of 11 days.
6. Whereas in plants, incubation ranges from 10 to 19 days. Viruliferous insects remain infective for life.
Cultural methods for Rice Grassy Stunt disease
Control measures for Rice Grassy Stunt virus disease
1. A single dominant gene governs resistance.
2. A strain of wild rice, Oryza nivara (Sharma & Shastry), was found to be resistant to the pathogen.
3. The control of Brown Planthopper, either with chemical, resistant varieties, or other control measures, result in the control of RGSV.