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Years ago how to do now in addition to failed wheat fields
In recent months, many wheat farmers have reached out to ask about the issues they should be aware of when using herbicides for weed control before the Spring Festival. One common problem is that, due to a lack of rainfall and dry winter conditions, weeds often fail to absorb the herbicides properly. This happens because the stomata on the weed leaves remain closed, preventing the chemical from being taken up and transported effectively. As a result, weeds grow vigorously in many fields after spring, making it necessary to take corrective measures.
To address this issue, several effective remedial methods can be applied:
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 the mixture thoroughly over the field.
In general wheat fields, you can use 1 bag of quick-acting herbicide per mu, combined with 80 grams of potassium dihydrogen phosphate, dissolved in 30 kilograms of water. After fully dissolving the ingredients, spray the solution onto the stems and leaves. The half-life of quebrachoin in the soil is between 2 to 4 days, so it does not negatively affect the growth of subsequent crops.
During the early jointing stage, you can apply 1 bag of super-effective wheat herbicide per mu, along with 80 grams of potassium dihydrogen phosphate, mixed in 30 kilograms of water. Make sure to fully dissolve the mixture before spraying onto the stems and leaves.
If the sowing time was too early and the wheat has already started jointing, you can use 1 long bag per acre, mixed with 70 ml of rare earth micro-fertilizer, 50 grams of potassium dihydrogen phosphate, and 30 kilograms of water. Dissolve the ingredients completely and spray them onto the stems and leaves. This method is safer for wheat before heading, and it's recommended not to use other herbicides after the jointing stage to avoid phytotoxicity.
By following these steps, farmers can better manage weed problems caused by improper herbicide application during dry conditions. It’s important to adjust the timing and dosage based on local weather and crop conditions for optimal results.