Nghe An: Over 722 hectares of spring rice are damaged by blast disease

Mr. Nguyen Van Ca's family in block 3, Hung Nguyen town has 3 sao of rice, all of which have been damaged by rice blast disease.

Mr. Ca said: After only a few days of not visiting the fields, on March 7, he was shocked to see the rice fields were bare of leaves, the rice plants were yellow and stunted. He quickly went to the dealer to buy medicine to spray, and now the rice has basically recovered from the symptoms, but he still has to regularly check and take care of the rice plants to help them recover and grow.

Mr. Nguyen Van Ca sprays pesticides on a rice field damaged by rice blast disease. Photo: Phu Huong

Mr. Nguyen Viet Hung, Head of the Plant Protection Station of Hung Nguyen district, said: Rice blast disease has appeared and caused damage since mid-February on early and main-season rice crops, mainly on varieties such as IR1820, Xi 23, X33, P6. Locally in some areas of communes such as Hung Loi, Hung Chau, Hung Nhan, Hung Thinh ... in which there are individual disease outbreaks with 20-25% of leaves infected.

“Currently, after the first fertilization, the rice plants are growing rapidly, combined with favorable weather conditions for the disease to spread, causing widespread damage to rice varieties such as IR1820, Xi 23, X33, P6, AC5, NA 6, TBR 225, and various types of glutinous rice; as of March 14, the total diseased area in the district was 478 hectares."Of which 48 hectares are heavy; over 550 hectares have been treated, of which 30 hectares have been sprayed for the second time," said Mr. Nguyen Viet Hung.

Nowadays, tEarly spring rice is in the stage of intensive tillering - late tillering, main crop rice is in the stage of tillering and late crop rice is in the stage of rooting and greening - early tillering. In general, the rice fields are growing and developing well..

However, leaf blast disease has occurred and damaged a total area of ​​722 hectares, of which 64.8 hectares are severely infected with a high rate of diseased leaves of 15-20%, and in some cases 50-70% in Hung Nguyen, Vinh City.

Farmers in Hung Dao and Hung Nguyen communes apply nitrogen fertilizer to promote rice growth. Photo: Phu Huong

According to Mr. Trinh Thach Lam, Head of Plant Protection Department, Department of Crop Production and Plant Protection of the province, ttime to weather conditionswarmgradually, alternating cold air masses with rain,High humidity is a very favorable condition for leaf blast disease.continuearise, spread and causeheavy over a wide area,especially on sandy soil, light soil, semi-mountainous areas, sowingimplant thealikeannualoftenhave a high level of infectionsuch as Xi23, IR1820, Xi30, BC15, AC5, P6, BTE1, Thien Uu 8.

“In rice fields that have been infected with the disease, if the weather conditions are favorable for the disease to develop and cause damage, it is necessary to immediately stop applying nitrogen fertilizer, keep enough water in the fields and carry out prevention with one of the drugs containing active ingredients according to the instructions of the competent authority at the recommended dose.If the disease continues to occur, spray again 5-7 days after the first spray. Only when the disease stops developing can fertilize again.It should be noted that absolutely do not use foliar fertilizers on fields where diseases are emerging and causing harm,' Mr. Trinh Thach Lam advised.