Grasping the best time for chemical wheat weeding in winter wheat

The best time to perform chemical weeding in wheat fields is from mid-November to early December. During this period, wheat plants are at their most resilient stage, while weeds are most vulnerable to herbicides, ensuring the highest effectiveness of weed control. But what should you pay attention to when using chemicals for weeding? Do you know? The **Pesticide Information Network** shares some key tips and precautions for you. .jpg) **Chemical Weeding and High-Tech Control Methods** 1. For controlling weeds like sage and leeks, use herbicides containing fensulfuron. A recommended mixture includes 10% phenylsulfonate at 15 grams per acre, or mix with 10% bensulfuron-methyl powder (10 grams) or 30% sodium dimethyltetrachloride powder (10 grams) for resistant seedlings. 2. To manage weeds such as sputum and pig scorpion, a herbicide containing flupirtine is effective. Use 20% flufenoxyacetic acid at 35 ml per acre. 3. For wild oat control, choose a herbicide with thiazol and grass ingredients. A suitable option is 6.9% thioxazole at 50 ml per acre. **Important Precautions** 1. Chemical weeding should be carried out over three consecutive days, with an average temperature above 5°C. It’s best to spray during sunny midday hours, avoiding windy or extremely hot conditions. 2. Ensure that each mu (approximately 667 square meters) receives more than 30 kg of water, and mix the solution thoroughly before application. Apply the herbicide directly to the weeds. 3. Spray evenly, avoiding excessive or missed areas. If there are other crops nearby, lower the nozzle to prevent drift and minimize damage. 4. After spraying, clean all tools immediately to avoid any potential phytotoxicity effects on future crops. **Additional Tips from the Chinese Pesticides Network:** Some wheat fields may also suffer from insect infestations such as golden grubs, mites, red spiders, and sheath blight. Be sure to use the right treatments for these pests. In heavily infested areas, consider mechanical crushing, deep plowing, or applying 15% paclobutrazol or 15 grams of Zhuangfengan per acre for better results. By following these guidelines, you can ensure safe and effective chemical weeding while protecting your wheat crop and the surrounding environment. Always read and follow the label instructions carefully before using any herbicides or pesticides.

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