Will rain the day after applying herbicide affect its effectiveness?

If it rains lightly for a short time the day after applying herbicide, there is no need to apply herbicide a second time; if it is heavy rain or a rainstorm but lasts a short time, you need to observe for a few days before deciding; if it is continuous rainy weather, then you should consider applying herbicide a second time.

Precautions for herbicide use:

1. The herbicide dose must not be increased at will. Some friends may think that when applying the pesticide under high temperatures, more evaporates, so the dose should be increased. This is wrong. During the optimal period for weeds, the pesticide should be used according to the instructions.

2. Herbicides are recommended to be diluted twice. First mix evenly in a small container, then pour it into a large container. This applies whether it is a backpack sprayer, a spraying machine, or a drone.

3. On the premise that the herbicide dose per unit area is fixed, the more water the better. Spray the weeds thoroughly, so that the weeding effect can better achieve our goal.

4. If it is sunny and also high temperature, it is recommended to wait until after 4-5 p.m. before applying herbicide; on cloudy days, with no direct sunlight, after applying herbicide, the pesticide solution evaporates relatively less quickly, but the temperature is still very high, so you still need to pay attention to this point. It is likewise recommended to mainly apply the pesticide in the afternoon.

Therefore, when preparing to use herbicides or other pesticides, be sure to check the weather forecast in advance to avoid applying them before continuous rainy days, which would affect the pesticide's effectiveness.