In most areas of wheat herbicides, farmers are accustomed to spraying after the year. However, in view of the pest information and related documents of weed control in various plant protection departments, we advocate that weeds in wheat fields should be removed in time before winter.

So what is the difference between wheat herbicides before and after the year, through the same dose of wheat herbicides, different application time (years before and after) of the effectiveness test and the results of a large number of applications in the field. The differences between wheat herbicides before and after the year are as follows:

1, the effect is obviously different

A large number of experimental demonstration data show that the effect of wheat herbicides before the attack is usually significantly different than that of the years after, in which the more resistant weeds in the field, the more obvious the effect. Under normal circumstances, the same dose of the drug, the more weeds are prevented, the better the effect will be. The greater the weeds are, the stronger the drug resistance, and the control effect will decline.

2, convenient and quick to apply

Spraying herbicides before winter, the wheat plants in the field are generally short, and the weeds are less blocked. It is usually more convenient when spraying the weeds, especially when the grass is sprayed, it is easier to operate. When spraying after the year, there are usually many weed leaves. If the field density is too large, or the wheat grows better, it will cover the weeds, which is not conducive to application.

3, less medication, can save costs

Because of the small age of weeds, the drug resistance is poor, and the effect is good. Usually, when the pesticide is used at low dose, it can have better control effect, and after the year, because of the large grass age, the drug resistance is enhanced, and the effect is to be ensured. To increase the dosage of the drug.

4. Conducive to crop safety

Spraying medicines before the year, because of the long interval between the crops and the crops, it is possible to avoid the effects of long-lasting pesticides on the phytotoxicity of the sensitive crops. If the medicine is sprayed after the year, the soil decomposition may be slower because of the shorter interval. When sensitive crops are used, they are more likely to cause phytotoxicity and affect their normal growth.

5, prevention and control from time to time to help make up

The use of herbicides is usually affected by the use of technology, weather and improper use of pharmaceuticals. When the control effect is not good after spraying, or if there is no time to prevent it, it can be supplemented in time after the year to ensure that the production is not affected. However, when the effect of spraying is not good after the year, especially after the later spraying, it is not suitable for the wheat to be removed after the jointing.

In short, the weeds in the field before the winter are basically out, and after the wheat 3 leaf stage, the daily average temperature is more than 6 degrees, and the weather can be removed in time. If it is not suitable for medicine before winter, it should be carried out in time in the spring to avoid miscellaneous. Grass damage, resulting in loss of production.

The above is the difference between wheat herbicides before and after years. Now most of the wheat has been planted. Xiaobian wants to ask, did your herbicides hit years before or after years?

ZHOUSHAN SINOMEGA BIOTECH ENGINEERING CO.,LTD , https://www.sinomegabiotech.com