When growing wheat, can you use benzenesulfuron herbicide after the year? What should I pay attention to when using benzenesulfuron?

Benzenesulfuron is mainly used to control broad-leaf weeds in wheat fields, such as Artemisia annua, Calamaria, Shepherd's purse, Mai Jiagong, and so on. This formula can be said to be a formula that has been widely used since the large-scale implementation of wheat herbicides. Not only the control effect is good, the main price is also cheap, deeply loved by farmers, it is one of the herbicides of choice for many wheat growers. Friends who grow winter wheat, if you are a herbicide after the year, can you use Benzenesulfuron herbicide? What should you pay attention to if you use benzenesulfuron?

1. Disadvantages of using benzenesulfuron

The control effect of ① is getting worse and worse. This is mainly caused by the long-term use of monobenzenesulfuron for many years, in the face of this situation, some friends will choose to increase the dosage, the consequence of this, the more later, the greater the use, but the worse the control effect. At present, the control effect of single tribenuron-methyl is no longer effective in many winter wheat planting areas, and many farmers have given up using it, or combined with other broad-leaved weed herbicides.

The ② residual period is too long. This is caused by the characteristics of tribenuron-methyl, it is observed that the residual time of benzosulfuron-methyl is generally between 2-4 months, in some specific areas, the time will be extended, affecting the growth of the following crops. We can calculate the time. When wheat herbicides are sprayed after the year, it is usually in March, while the harvest time of winter wheat is about June 1, less than 3 months, and the planting time of the next crop is about June 15. From the time analysis, it is very likely to cause herbicide damage to the following crops, resulting in short growth, slow growth, yellowing leaves, and even direct death of seedlings.

2. matters needing attention in the use of benzenesulfuron

① can only use this product once per season.

② has high activity, so you should strictly control the dosage and mix it with water.

③ this product can only be used to control emerging weeds and has poor control effect on ununearthed weeds.

④ windy weather should stop spraying, so as not to cause drug damage to nearby broad-leaved crops.

⑤ the residual period of this product in soil is about 60 days.

⑥ peanuts and potatoes are sensitive to this product. In winter wheat fields where this product has been applied, peanuts should not be planted in the following crops.

Having said so much, the main reason why tribenuron-methyl is not recommended for spraying wheat herbicides after the year is that the residual period is too long, which will affect the growth of the following crops. Of course, if the dose is not high, it is not impossible to use, but just in case, and considering the control effect against weeds, it is recommended to use other formulations.