Ha Tinh farmers have a "headache" in dealing with brown spot disease that damages rice

Sheath blight disease is spreading rapidly on summer-autumn rice in Ha Tinh with an infected area of up to thousands of hectares.

Ha Tinh farmers have a

Professional staff instruct farmers in Thach Ha district on spraying to prevent brown spot disease.

At this time, farmers in Can Loc district are having to deal with the brown spot disease that has developed strongly in the fields after the prolonged rains from the end of July until now.

Mr. Tran Van Hanh (Dong Hue village, Vuong Loc commune, Can Loc) said: "Sheet blight disease often appears first on the sheaths and old leaves near the base and begins to "eat" the leaves above, causing the rice to turn yellow and wither. Currently, the weather has changed to Lap Thu, there is more rain, the amount of water in the fields is not lacking, which is a favorable condition for the disease to develop, especially in fields with a lot of water, sown too thickly and densely".

“This year, the area and level of brown spot infection are much higher than last year, especially on Nep 98, Nep 87, TBR225 varieties... I have sprayed pesticides, but the weather is sometimes rainy, sometimes sunny, so I am not confident yet” - Ms. Phan Thi Hanh (Ban Long village, Quang Loc commune, Can Loc) shared.

Ha Tinh farmers have a

Sheath blight usually appears first on the old leaves and stems near the base.

According to the review of the professional sector, Can Loc is currently the locality with the largest rice area infected with sheath blight disease in the province. Up to now, the whole district has 475 hectares of rice infected with the disease, the damage rate is 7-10%, in some places it is 20-25%, concentrated in the communes of Vuong Loc, Thuan Thien, Tung Loc...; especially in the fields planted densely and fertilized with a lot of nitrogen.

According to Mr. Phan Xuan Phuong - Director of the Center for Application of Science and Technology and Protection of Crops and Livestock in Can Loc district, the district is directing professional staff and communes to focus on monitoring, investigating, and zoning each outbreak of disease and each rice crop to implement appropriate treatment measures; providing training and guidance to people in areas at risk of rapid disease spread. At the same time, people are advised to proactively examine their fields to have early preventive spraying plans.

Ha Tinh farmers have a

Farmers need to pay attention to visit the fields regularly to monitor the progression of brown spot disease.

In Cam Xuyen district, brown spot disease has appeared in the fields since the rice first started tillering and forming panicles. However, according to farmers, in the past week, the disease has appeared a lot, the damage rate is high, and in some fields, both the sheaths and the upper leaves have died.

Mr. Tran Van Minh (Yen Khanh village, Cam Vinh commune, Cam Xuyen) said: "Summer-autumn rice is in the flowering stage, many of my family's fields have been infected with sheath blight, directly threatening the yield at the end of the harvest."

One of the reasons why brown spot disease appears frequently in Cam Xuyen is because farmers apply too much nitrogen fertilizer, apply it many times or apply nitrogen fertilizer late to promote panicle formation, causing the rice to grow densely, increasing the humidity inside the canopy. When it rains and is hot and humid, it is very suitable for fungal diseases to arise and spread. Therefore, it is necessary to pay attention to regularly visiting the fields and promptly implementing preventive measures. If the disease develops strongly, causing damage to the leaves and panicles, it will seriously affect productivity, weaken the plants, and make them prone to falling when there is rain and strong winds.

According to information from the provincial Department of Crop Production and Plant Protection, up to this point, the brown spot disease has concentrated on densely planted rice fields with excess nitrogen fertilization, at a rate of 5-7%, in high places 15-20%, locally 30-40%, with an area of nearly 2,000 hectares; of which more than 20 hectares are heavily infected, concentrated in Can Loc, Thach Ha, Cam Xuyen, Duc Tho districts....

Ha Tinh farmers have a

Spraying should be done when brown spot disease first appears, using one of the following chemicals: Vida5WP, Validacin 5SL, Anvil 5SC, Nevo 330EC, Tilt Super 300ND...

According to forecasts, in the coming time, the weather will continue to be hot and sunny, alternating with showers and thunderstorms, creating hot and humid weather patterns, with temperatures ranging from 24 to 32 degrees Celsius. The disease will continue to increase in both severity and scope, especially causing more severe damage in densely planted fields with lots of nitrogen fertilizer.

Currently, the province’s summer-autumn rice crop is in the ripening-flowering stage, expected to peak from August 10-15. This is also the time when the brown spot disease is most active.

The provincial Department of Crop Production and Plant Protection has issued a document recommending that localities need to monitor the weather, flowering time of each variety and variety structure to decide on appropriate and timely prevention and control measures. It is necessary to spray when the disease first appears, using one of the following chemicals: Vida5WP, Validacin 5SL, Anvil 5SC, Nevo 330EC, Tilt Super 300ND...; for fields with severe disease, spray a second time 5-7 days after the first.

Thai Oanh

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