What to pay attention to when using pesticides

1. You must understand the scope of control of the pesticide. Every pesticide has a certain scope of control; if it is not matched to the problem, the disease cannot be brought under control. 2. Do not change pesticides at will. If you use one pesticide once and, seeing that it does not take effect immediately, rush to use another, then none of the pesticides will achieve the purpose of control, and time will be delayed. Each pesticide must be used three times in a row as one course of treatment, until the disease disappears or is brought under control. 3. Prevent the long-term use of a single pesticide, which can cause pathogens to develop resistance and make the results very poor. 4. Prevent inaccurate pesticide dosage. If the pesticide dosage is too small, it cannot inhibit and kill pathogens; if the dosage is too large, the high concentration will poison the plants or even kill them. Pesticides must be used according to the instructions on the product. (Chen Jisheng)