What should I pay attention to when applying herbicides in the morning or afternoon?

When the temperature is high in the afternoon, plants will transpiration violently, reducing the temperature of leaves. At this time, the stomata will be wide open and the herbicide will easily penetrate into the leaves of plants. However, it should not be carried out at noon when the temperature is the highest, because at this time, many plants will temporarily close their stomata and enter a dormant state in order to avoid excessive water loss.

It is best to apply herbicides before 10 am or after 4 pm after dew volatilization, which will make weed leaves absorb more herbicides and give full play to the role of herbicides.

Although the requirements of soil treatment agent are not as strict as those of stem and leaf treatment agent, it should be avoided to apply it at high temperature at noon to avoid volatilization after application. Whether it is stem and leaf treatment agent or soil treatment agent, it should be applied under the condition of no wind or breeze. When applying soil treatment agent, it is required that the field soil cannot be dried.