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Years ago how to do now in addition to failed wheat fields
In recent times, many wheat farmers have reached out to ask about the key issues to consider when applying herbicides for weed control before the Spring Festival—especially when weeds aren’t being effectively killed. This problem often arises due to dry winter conditions and a lack of rainfall, which causes the stomata on weed leaves to close. As a result, the herbicides sprayed in the fields are not properly absorbed or translocated, leading to vigorous weed regrowth after spring.
To address this issue, several effective remedial measures can be taken:
For late-sown wheat, you can mix 10 grams of tribenuron-methyl per acre with 50 milliliters of high-efficiency liquid fertilizer and 30 kilograms of water, then spray it evenly on the weeds. This helps enhance the herbicide's effectiveness and improves crop health.
In general wheat fields, you can use 1 bag of quick-acting herbicide per mu (approximately 667 square meters), combined with 80 grams of potassium dihydrogen phosphate dissolved in 30 kilograms of water. After fully dissolving the mixture, spray it directly onto the stems and leaves. The active ingredient, quebrachoin, has a short half-life in the soil—only 2 to 4 days—so it doesn’t affect the growth of subsequent crops.
At the early jointing stage, apply 1 bag of super-effective wheat herbicide per mu, along with 80 grams of potassium dihydrogen phosphate in 30 kilograms of water. Make sure the solution is well mixed before spraying on the stems and leaves. This method ensures better weed control without harming the wheat plants.
If the sowing time was too early and the wheat has already started jointing, you can use 1 long bag per acre, mixing 70 ml of rare earth micro-fertilizer with 50 grams of potassium dihydrogen phosphate in 30 kg of water. Once fully dissolved, spray it on the stems and leaves. It’s safer to apply this treatment before heading, and avoid using other herbicides after jointing to prevent any potential phytotoxicity.
These methods offer practical solutions for managing weeds in dry conditions, helping farmers achieve better results while protecting their crops.