IRRI helps Vietnam to prevent pests on rice

The International Rice Research Institute (IRRI) has just sent TS. Rogelio Cabunagan to Vietnam helps to identify viruses that cause short-term yellow symptoms in gilding and autumn-winter rice in some southern provinces and cities.

After conducting the assessment, the results showed that the proportion of samples of rice plants infected with the virus was 59% with the symptoms of gold leaf on the season in Ho Chi Minh City and Long An; in which rice grass virus, twisted leaf dwarf virus and mixture of both viruses have a high frequency of presence in the sick rice sample.

There are over 50,000 ha of rice infected with brown plant hopper and twisted leaf dwarf disease. (Artwork: VNN) According to this result, up to 44% of brown backed rice plant hoppers have viruses in their bodies.

The Plant Protection Department (Ministry of Agriculture and Rural Development) recommends that for the season of virus infection in Ho Chi Minh City and Long An, not for large-scale cultivation. At the same time, immediately dispose of diseased plots and spray brown plant hoppers to prevent pathogens from moving to other areas.

On the autumn and winter rice tea in the southern provinces and cities, the rate of brown plant hoppers carrying disease in the body is still quite high, so this is still a risk of spreading long-lasting pathogens.

Therefore, localities need to regularly monitor brown backed rice plant hoppers in the field; When the density of brown backed rice plant hoppers is detected, spraying must be done simultaneously, not letting brown backed rice plant hoppers develop into a winged-wing insect and spread the disease on a large scale.

Provinces and cities with seasonal rice cultivation in the Mekong Delta and the Southeast region mobilize investigative forces to detect and forecast in time and accurately the brown backed rice plant hoppers. From now until the end of October, the centralized prevention organization will be highly effective to limit brown plant hoppers to increase the high density and move towards the northeast monsoon in late October and early November to cause damage to winter-spring rice. in the Mekong Delta (similar to the 2005 crop and winter-spring 2005-2006).

H. Method