Pesticide and agricultural production are inextricably linked, and mastering the correct knowledge of fighting drugs can not only make crop management work more effective, but also effectively reduce the occurrence of phytotoxicity. The secondary dilution method of pesticides is often used when farmers use drugs. This method is mainly used to dilute pesticides with very little dosage. The second dilution can be used to mix the medicines and be convenient to use. Many people said that they are not familiar with the second dilution of pesticides. Then the following is a brief introduction to the benefits and methods of secondary dilution of pesticides.
Benefits of secondary dilution of pesticides
1, can keep the value of the drug dispersed evenly in the water
Friends who use pesticides regularly should have some understanding. For example, some wettable powders often agglomerate together to form coarse aggregates. If they are directly put into the liquid solution in the tank, the coarse pellets are not fully dispersed, and they are submerged into the bottom of the water. It is very difficult.
If one dilution is used directly at this time, the uneven concentration of the mixture may result in high concentration of the place where the crop is sprayed and low concentration in some places, which is obviously not conducive to the overall growth of the crop. The second dilution is different. Generally, a small amount of water is used to form a thick mother liquor, and the powder is dispersed and then poured into a solution tank for final dilution, so that sufficient agitation can be performed.
2, is conducive to accurate medication and reduce phytotoxicity
The use of the second dilution method is conducive to accurate drug use, and the amount allocated to each acre of land can basically meet the requirements of modern agricultural production (generally several grams to ten grams). In addition, after the second dilution of the pesticide, even the more toxic pesticides will greatly reduce the harm, and the pesticides configured by the second dilution method can greatly reduce the chance of contact with the original drug. It is reported that the control effect of pesticides by secondary dilution method is 15~20% better than that of one time.
Method for secondary dilution of pesticides
1. Use a medical saline bottle or other small container with a capacity scale, place the pesticide in the bottle, and inject a proper amount of water into the mother liquor.
2. When using a knapsack sprayer, it can be directly diluted in the barrel.
3. When using a motorized sprayer for large-area application, a larger container, such as a barrel or a cylinder, may be used for primary dilution of the mother liquor.
In summary, the promotion of secondary dilution technology for pesticides is of great significance for agricultural production. The other is that when we choose the source of the drug, we must choose the brand of pesticides, otherwise those fake and shoddy products will not be effective even if diluted.
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