In recent years, new wheat diseases and pests have become increasingly common in Tianjin, with some previously minor pests now emerging as major threats. Underground pests and the wheat midge are showing a growing trend in occurrence. In response to this situation, the following recommendations have been made for the prevention and control of wheat diseases and pests this autumn:
First, it is essential to strengthen monitoring of wheat pests and diseases. After sowing, thorough monitoring should be conducted for underground pests such as wireworms and cockroaches, as well as wheat midge. It is important to assess the population levels of these pests in different fields and implement targeted control measures in areas with high infestation levels during the autumn season.
Second, the application of pesticide seed dressing is strongly recommended. This year, the occurrence of underground pests in the city has been moderate, close to normal levels. To effectively manage both pests and diseases, it is advised to treat seeds before planting this fall. The following methods can be used:
1. Control of ground pests such as wireworms, cockroaches, and other underground pests:
Use 50% phoxim at a rate of 0.5 kg per 25–50 kg of water, then mix with 250–500 kg of wheat seeds. Alternatively, use 40% methyl isopropyl EC at 0.5 kg per 400–500 kg of wheat seeds. Another option is to apply 48% emulsifiable seed treatment at 0.2% of the seed weight, ensuring the seeds are soaked for 4–6 hours before sowing.
2. Prevention of wheat diseases such as powdery mildew, rust, sheath blight, scattered black ear, and others:
Apply 25% triadimefon wettable powder at 0.1% of the seed weight, or use 50% carbendazim, 33% penicillin, 12.5% wolfberry fruit, or 10% hydroxycamptothecin at 0.2–0.3% of the seed weight. Mix the seeds thoroughly and soak them for 6 hours before planting.
These preventive measures will help reduce the risk of pest and disease outbreaks, ensuring healthier wheat crops and better yields. Farmers are encouraged to stay vigilant and follow these guidelines closely for optimal results.
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