How to control rice sheath blight? Use "Qiuzan" to manage rice sheath blight—don't wait until the disease spreads over a large area before spraying.
Rice sheath blight is a common disease in rice, with its occurrence closely associated with overcast and rainy weather as well as high humidity. Upon infection, lesions appear on the leaves, leading to premature defoliation and reduced yield. The key to controlling rice sheath blight lies in early prevention and the selection of appropriate fungicides—Qiuzan (flutriafol 125 g/L SC) is registered for the control of rice sheath blight and can be applied by foliar spraying according to the label instructions.
Rice sheath blight typically first shows symptoms on the leaves, with lesions spreading from lower to upper parts of the plant and increasing in number over time. In the early stage, the symptoms are inconspicuous; by the time the lesions coalesce into larger patches, spraying is often too late. Therefore, frequent field scouting is essential—apply the first fungicide application as soon as lesions are observed on the rice plants to suppress the pathogen at its source.
Qiuzan Epoxiconazole 125 g/L SC, registration number PD20181948 (subject to the actual label). Primarily used for controlling rice sheath blight, with secondary efficacy against rice false smut. Apply at a rate of 45–50 mL/mu diluted in water for foliar spraying, initiating treatment at the early stage of disease onset. A second application may be made at intervals of 7–10 days depending on disease severity. Ensure sufficient water volume and thoroughly wet the infected plant parts during spraying.
Prolonged consecutive use of fungicides such as epoxiconazole can readily lead to the development of resistance in pathogenic fungi. It is therefore recommended to rotate with fungicides of different modes of action. For specific dosage rates and water volumes, always refer to the product label, as local crop varieties and weather conditions vary; do not simply copy application regimens used elsewhere.