Misunderstandings in the use of pesticides

Pesticide manufacturers, as an important means of production, are becoming more and more important in agricultural production, and the use of pesticides is increasing year by year. However, due to the incorrect understanding of farmers’ friends, various misunderstandings have appeared in the use of pesticides in production. appears in:

Misunderstanding 1: No medicine is needed at the beginning of the disease, no medicine is needed for no insects

Most of the diseases and insect pests of synthetic ammonia manufacturers have very mild symptoms at the initial stage of onset. At this time, the effect of medication is good. After a large-scale outbreak, it is difficult to contain more medication. Regardless of the object of control, you can use it as you see it. Some use insecticides to control plant diseases, some use fungicides to control pests, and even use herbicides to control pests, especially when the price of pesticides is high. This kind of situation is particularly serious. If you do not care about indiscriminate use of medicine, you will miss the opportunity and affect the effect, and at the same time, it will cause phytotoxicity, and even the crops will not be harvested.

Pesticide manufacturer's misunderstanding 2: Increase the concentration or dosage of the pesticide at will

Pesticides are not proportioned in proportion, no special measuring tools are used, only bottle caps and other non-standard utensils are used; there is no concept of quantity, and generally exceed the specified concentration, which not only causes waste, but also prone to pesticide damage, and also accelerates the resistance of pests .

Some farmer friends even have misunderstandings themselves, believing that the greater the concentration of cyanuric chloride, the higher the control effect against pests. However, in the use of pesticides, sufficient water consumption is very important. Because insect eggs and bacteria are mostly concentrated in the soil near the back of the leaf and adjacent to the root system, the water consumption is small when applying the pesticide. It is difficult to spray the whole plant and the residues in the dead corners. Eggs and residual bacteria are easy to break out again. Increasing the concentration of use can also strengthen the resistance of bacteria and pests. If the concentration exceeds the safe concentration, phytotoxicity may occur. When the foliar fertilizer is used in high concentration, not only can it not be absorbed by the crop, but also the body fluid of the crop can leak out, causing physiological drought. When hormone pesticides are too high, they will have a counterproductive effect or make crops deformed. Therefore, simply increasing the concentration of the liquid medicine is often counterproductive.

There are also farmers who overuse pesticides, the amount of which is several times or even ten times the amount of commonly used pesticides, which often causes pesticide damage and speeds up the development of disease and insect resistance.

Misunderstanding 3: Long-term use of a single pesticide variety

In the pesticide use, if a certain pesticide is deemed to be effective, it will be used for a long time. Even if it is found that the effect on pest control is reduced, the species will not be changed. Twenty, the method of increasing the amount of pesticides is adopted, and it is not recognized that the pests have developed resistance. As a result, the greater the dose, the higher the resistance to pests and diseases, resulting in a vicious circle.

Misunderstanding 4: The pursuit of quickness

Many farmers always like to choose quick-acting pesticides when they choose pesticides. The reason is that quick-acting pesticides show results soon after they are used. Although some biological pesticides have good effects, they are only effective in the later stage due to the slow realization of the effects, which are not recognized by farmers' friends. For example, when using insecticidal pesticides to pursue quick-acting effect, hope to kill the pests immediately after spraying. However, certain biological pesticides, such as Bt or abamectin insecticides, are not easy to show effects because they only kill eggs or inhibit insect molting or take effect slowly, and are ignored by farmers. The most serious consequence of farmers’ pursuit of quick-actness is that the use of highly toxic, highly toxic, and high-residue pesticides still exists in some places, and the pesticide residues of products produced exceed the standard.

Misunderstanding 5 Lack of common sense of pesticides

The pesticide market has been opened up, and the quality of pesticide operators is uneven. They often mislead farmers by taking advantage of their lack of pesticide knowledge. Therefore, before using pesticides, it is best to consult with a formal and qualified plant protection department to seek symptomatic use of pesticides. Do not purchase pesticides from operators with incomplete licenses, and resolutely refrain from using pesticides that have expired or are suspiciously labeled.

Once a certain pesticide is found to be effective in the use of pesticides, use it for a long time. Even if the pesticide is found to have a reduced effect on pests and diseases, the species will not be changed, but the method of increasing the dosage will be adopted. It is not recognized that the pests have already occurred. Drug resistance still increases the amount of drug, resulting in a vicious circle.　

Myth 6: Can't prescribe the right medicine

This is a common problem in current production. Many farmers lack the necessary plant protection knowledge, fail to correctly diagnose the disease, and blindly use medicine, thus delaying the opportunity for prevention and control.

Misunderstanding 7: Mixed use of multiple pesticides

A major problem currently exists is that many farmers use a mixture of several fungicides with 5-8 kinds of micro-fertilizers, insecticides, and virusicides, which not only affects the efficacy of the medicine, but even causes phytotoxicity and affects crop growth.

Myth 8: Lack of protection and awareness of using natural enemies

When there are fewer pests and more natural enemies, spraying is not necessary. There are more pests and it is not necessary to spray. Use high-efficiency and low-toxic pesticides that have little effect on natural enemies as much as possible. Some farmer friends have never considered protecting and using natural enemies, and they have also killed natural enemies while controlling insects.

Myth 9: Control once, once and for all

Insecticides and fungicides have obvious effects in the peak period of pests and diseases, although they can be eliminated once, but with the loss and decomposition of pesticides, and the impact of the gift gold plot, there are still hidden dangers. The interval should be 7-15 days. , The best prevention effect can be achieved by applying the medicine several times continuously. After spraying the page fertilizer and hormone pesticides, the plants can only absorb a small amount from the leaf surface. It is advisable to spray it in a small amount and many times during the trial period to achieve the desired effect.