The overuse of pesticides means that the amount of pesticides used or the number of use exceeds the pesticide registration label requirements. The disadvantages of overuse of pesticides are many: on the one hand increasing the cost of medication; on the other hand, it is very easy to cause pesticide residues in agricultural products to exceed the standard or produce phytotoxicity; at the same time, it will also increase the resistance to diseases, insects, and weeds.
Excessive use of pesticides can easily cause excessive pesticide residues in agricultural products for four reasons: First, the use of different doses; Second, the use of different times; Third, the use of different time and season; Fourth, the safety of the same pesticide on different crops The period and residue limits are also different.
Then, how can farmers avoid overuse of pesticides in production? Attention must be paid to the following three aspects:
1. Buy qualified pesticide products from a good reputation and regular store. Avoid illegally adding “hidden pesticide components†and even highly toxic pesticides are used in the fields.
2. In strict accordance with the provisions of the label of the control object medication. For example, acetamiphos is only allowed for the pest control of rice and cotton and is not allowed to be used on other crops.
3. For commonly used pesticides, although they belong to the same pesticide name, they have different dosage forms and contents, and the objects to be controlled and the amount and frequency of use are also different. Must not be confused. Like imidacloprid pesticides, there are wettable powders and suspensions, but the usage is very different. Individual farmers used the CadillacTM (600 g/l imidacloprid suspension agent) registered on rice for use on cucumbers, resulting in excessive imidacloprid residues in the cucumber.
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