Matters needing attention in the use of pesticides

First, we must understand the scope of prevention and control of agents, each medicine has a certain scope of prevention and control, if we can not prescribe the right medicine, the disease can not be controlled.

Second, do not change drugs at will, use a certain drug once, see that it can not be effective immediately, eager to use another drug, so that each kind of drug can not achieve the purpose of prevention and treatment, delayed time. Each drug must be used three times continuously for a course of treatment until the disease disappears or is under control.

Third, to prevent the long-term use of a single drug, causing bacteria to develop drug resistance, resulting in little effect.

Fourth, to prevent the use of inaccurate drug dose, pesticide dose is too small, can not achieve the purpose of inhibiting and killing bacteria, the dose is too high, high concentration will cause plant poisoning, or even death, the use of pesticides must be in accordance with the instructions of the pesticide. (Chen Jisheng)