How to prevent and control rapeseed viral disease? A detailed practical guide
Viral disease is one of the main diseases of rapeseed. Affected plants reduce yield by around 20%, and in severe cases by more than 70%. It is generally more susceptible in years with little rain or in areas where vegetables are often grown nearby. Comprehensive control techniques must be adopted to prevent and control rapeseed viral disease. First, disease-resistant varieties should be selected; second, aphids should be controlled in a timely manner; third...
Viral disease is one of the main diseases of rapeseed. Affected plants reduce yield by around 20%, and in severe cases by more than 70%. It is generally more susceptible in years with little rain or in areas where vegetables are often grown nearby. Comprehensive control techniques must be adopted to prevent and control rapeseed viral disease. First, disease-resistant varieties should be selected; second, aphids should be controlled in a timely manner; third, preventing infection at the seedling stage is the key to control. At the 3-9 leaf stage of rapeseed, combined with aphid control, use 24% mixed fatty acid copper (Duxiao) at 800 times dilution or 7.5% moroxydine copper (Keduling) at 500 times dilution. Choose either of the above pesticides and alternate their use for 2 applications, which can effectively control the damage of rapeseed viral disease.