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Rice panicle neck disease is one of the most serious threats to rice crops, significantly reducing both yield and quality while causing substantial economic losses for farmers. Timely application of **pesticides** is crucial to prevent the spread of the disease and ensure a high-quality harvest.
Symptoms of this disease typically appear during the grain-filling stage of direct-seeded rice. Under favorable climatic conditions, the rice panicle becomes vulnerable to infection by pathogens. Once infected, the pathogen multiplies and causes necrosis in the neck of the panicle, blocking the flow of nutrients to the grains. This results in white or unfilled ears, which directly affects the overall yield. The damage caused by this disease can be severe, making early intervention essential.
The key period for controlling rice panicle neck disease is during the heading and flowering stages of the rice plant. At this time, the crop is most susceptible to infection, so it's important to take preventive measures promptly.
For treatment, several effective fungicides are recommended. These include 25% **mimiline** (100 grams per acre), 75% **tricyclazole**, 40% **Fuji No. 1**, 40% **sputum**, and 40% **rice glutinous rice**. Each of these products has been proven effective in managing the disease when applied correctly.
The best time to apply the pesticides is on a sunny day after the morning dew has dried. It’s important that no rain occurs for at least 10 hours following the application. If rain does occur, the treatment should be repeated. Adequate water volume is necessary to ensure thorough coverage. When spraying, the nozzle should be directed upwards and sprayed from the bottom to the top of the plant to maximize effectiveness. It is recommended to apply the treatment at least twice during the critical growth period.
The **Chinese Pesticide Network** advises farmers to rotate their pesticide use to prevent the development of resistance in the pathogen. This not only improves long-term control but also helps maintain the effectiveness of available treatments. By following these guidelines, farmers can better protect their rice crops and ensure a successful harvest.