In agricultural production, the use of herbicides is very common. However, the effectiveness of herbicides can be affected by many factors, one of which is the weather. Especially after the herbicide has been applied, if it rains for a short period of time, it may have an impact on the effectiveness of the herbicide. So, how many hours after the herbicide is applied in each season does the rain not affect the efficacy of the drug?
First of all, we need to understand the principle of action of the herbicide. Herbicides mainly inhibit the photosynthesis of weeds through leaf absorption and conduction, so as to kill or inhibit the growth of weeds. However, if it rains for a short period of time after applying the herbicide, the rain will wash away the herbicide on the leaves, causing the concentration of the herbicide to decrease, which will affect its effectiveness.
So, how many hours after the herbicide is applied in each season does the rain not affect the efficacy of the drug? It mainly depends on the type of herbicide and the local weather conditions. Generally speaking, if the rain time is more than 6 hours after the herbicide is applied, the herbicide has been fully absorbed by the weeds, and the rain has little effect on the effect of the herbicide. However, if it rains earlier than this time, it is necessary to reapply the herbicide or increase the application rate to ensure the weeding effect.
In addition, weather conditions in different seasons can also affect the effectiveness of herbicides. In spring and summer, when there is more rain, it is necessary to pay attention to the weather forecast after herbicide application, and choose a time when it does not rain to apply the herbicide as much as possible. In autumn and winter, when the weather is drier, it is necessary to pay attention to moisturizing after herbicide application to ensure the weeding effect.
In conclusion, in order to ensure the effectiveness of herbicides, it is necessary to choose the appropriate application time and method according to the local weather conditions and the type of herbicide. At the same time, it is necessary to pay attention to the weather forecast after applying herbicides so that timely measures can be taken to deal with the impact of adverse weather.