Several reasons why pesticide pests are not dead

No pests first fight drugs Generally speaking, no pests are found to fight drugs. This is because most of the pesticides currently used are contact or stomach poisons, which means that they will come into contact with the body of the pest or be swallowed into the body by the pests. It is used in the early stages of pests because it maximizes the effects of pesticides and reduces the degree of damage to plants.

Reasons for unclear selection of drugs The current pesticide market products are dazzling, and it is really easy to choose the wrong medicine without certain professional knowledge. We all know that the pathogens of plant diseases include fungi, bacteria, viruses, etc. The drugs selected for different pathogens are completely different. If you see that the plant has symptoms of the disease and you have not figured out the type of the pathogen, such as the use of fungicide or bacterial drugs for the virus, it is completely useless, not only wasting money, but more importantly delaying the treatment time. Therefore, the treatment must be the right medicine.

Pesticides, which are commonly used for pests and diseases, can be classified into insecticides , fungicides, rodenticides, herbicides, etc. The first two are the most widely used. Some growers are eager to treat the plants after they have been found to have symptoms of injury. They are sprayed or even sprayed several times after buying the pesticides, but the results are often not satisfactory. The reason is that the disease is misused with pesticides, and the insecticide is misused with fungicides. Such an example is not uncommon.

Time is not contraindicated. Not all pests and diseases are effective when sprayed. This is determined by the occurrence and development of pests and diseases. For example, common scale insects have a waxy protective layer for most of the life. The liquid cannot enter the worm body, and it is almost impossible to spray the drug at this time.

More pesticide knowledge , please pay attention to China Pesticide Network

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