Rice Tungro Disease Management

What is the primary vector of rice tungro disease?

• Rice weevil
• Black cutworm
• Green leafhopper
• Brown planthopper

Which planting method can help reduce the spread of rice tungro disease?

• Direct seeding
• Sowing by air
• Broadcasting
• Transplanting

Which type of resistance is most effective against rice tungro disease?

• Chemical resistance
• Physical resistance
• Varietal resistance
• Cultural resistance

What is the most common symptom of rice tungro disease in rice plants?

• Yellowing of leaves
• Root rot
• Stunted growth
• Wilting

How does rice tungro disease primarily spread within a rice field?

• Through soil movement
• Via irrigation water
• By wind dispersal
• Through infected seeds

Which nutrient deficiency can increase the susceptibility of rice plants to tungro disease?

• Potassium
• Phosphorus
• Nitrogen
• Magnesium

What is the best time to apply insecticides for managing rice tungro disease?

• After harvest
• At tillering stage
• At seedling stage
• During flowering stage

Which cultural practice can help control rice tungro disease spread in the field?

• Deep ploughing
• Inter-cropping with legumes
• Continuous flooding
• Mulching

What is the main control measure for rice tungro disease in the absence of resistant varieties?

• Biological control
• Sanitation practices
• Crop rotation
• Chemical treatments

What is the role of silicon in managing rice tungro disease?

• Promotes flowering
• Increases plant immunity
• Enhances seed germination
• Reduces lodging