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Integrated Detection and Management of the Southern Rice Black-Streaked Dwarf Virus (Srbsdv) in Guizhou Province - TCP/CPR/3603

Year of publication 2020

Place of publication Rome, Italy ;

Pages 10

Publisher FAO ;

Product type Project

Edition 1

Synopsis (short abstract) In recent years, a new disease has been observed on ricein regions of Guangdong Province and Hainan Province,in southern China. The virus, known as the southern riceblack-streaked dwarf virus (SRBSDV), is transmitted to riceseedlings mainly by the white-backed planthopper,Sogatella furcifera (Hemiptera: Delphacidae), although itcan also be transmitted by the small brown planthopper(Laodelphax striatellus Fallen). Since 2010, severerepeated outbreaks of SRBSDV have been reported in Liboand Tianzhu County of Guizhou Province. The disease hascaused severe crop damage in around 5 000 ha annually,leading to unprecedented income loss for farmers. If thevirus is not managed, it is likely to spread to otherrice-growing areas in the southern, south-eastern andsouth-west mountainous areas of Guizhou. Local farmers’use of non-target chemical pesticides to manageoutbreaks increases the resistance of rice planthoppersto the pesticides, leading to frequent outbreaks of thedisease and forcing many farmers to abandon ricecultivation. The long-term effective management ofSRBSDV disease and its vector, the rice planthopper, inLibo and Tianzhu is thus a top priority, not only to protectthe livelihoods of poor ethnic minority farmers but alsoto safeguard ecology and biodiversity in the area.

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