Risks of rice black-streaked dwarf disease

On June 14, the Department of Plant Protection sent an official dispatch to the Departments of Agriculture and Rural Development in several northern provinces; Regional Center for Plant Protection Zone IV; The Northern Center for Plant Protection on strengthening the direction of prevention and control of RBSD disease that damages the summer-autumn rice crop of 2021. 

According to the department of plant protection, currently, the summer-autumn rice crop and 2021 in the northern provinces and cities (from Thua Thien - Hue onwards) crop have sown 196,700 hectares, of which the North Central region was about 172,000 hectares while the Red River Delta region and the Northern Midlands and Mountains were about 24,700 ha.

Summer-autumn rice, early-season rice are in the seedling stage - green anise, tillering. This is a very sensitive period for RBSD disease. 

According to information from the National Key Research Laboratory on Migratory Pests, under the Nanjing Agricultural University (Jiangsu Province, China), tropical storm KOGUMA (the No. 2 typhoons in 2021) has battered Hainan Island (China) on the morning of June 12 and continued to move towards the North and North Central coastal areas with a concentrated wind field that suitable for gathering and delivering the white-backed planthoppers, the transmitter of RBSD virus from Hainan Island, southern Guangdong and Guangxi provinces (China) to Vietnam.

To actively handle the situation as well as protect the summer-autumn crop of 2021, the department proposed departments of agriculture and rural developments in provinces of Thanh Hoa, Nghe Anh, Ha Tinh, Quang Binh, Quang Tri, Hai Phong, Thai Binh, Nam Dinh, Ninh Binh (the area directly affected by storm KOGUMA) to direct and instruct relevant agencies and units: 

- Continue to strictly implement a Directive on strengthening the prevention of RBSD disease in the northern provinces and cities. 

- Strengthen the investigation and monitoring of the white-backed planthoppers density in the light traps and the field, especially in the newly planted areas of summer-autumn rice and summer rice in 2021. Collect samples of the white-backed planthoppers and proactively assess the source of RBSD disease for timely and effective prevention measures.

The Department of Plant Protection proposed that the Regional Plant Protection Centers arrange staff to strengthen support for localities to organize the investigation, forecasting, and assessment of samples as a basis for directing the prevention of leptospirosis.

Provincial Plant Protection and Plant Protection Sub-Departments, Regional Plant Protection Centers regularly report on the implementation of the above contents and difficulties and problems (if any) to the Plant Protection Department for timely handling.