Pesticides will have a safe interval and half-life, the Chinese pesticide network Xiaobian for your specific analysis of the specific meaning of pesticide half-life:
The half-life (t1/2) of pesticides generally refers to the pesticides under certain conditions, the amount of pesticide residues is degraded or digested half of the energy consumption time, which is a parameter and standard for telling the speed of pesticide degradation. The half-life of degradation is that the pesticide may be affected by various biological, chemical or physical factors in its environment, and the molecular structure is seriously damaged. Nearly half of the pesticide molecules will change the original molecular state. The time of digestion; the half-life of digestion refers to the time when the degradation and the total amount of movement of the pesticide reached half.
According to the China Pesticide Network , when formulating the safety interval of pesticides on certain crops, the degradation dynamics curve and half-life must be obtained according to the degradation rules of pesticide residues in the edible product parts under the normal dosage of pesticides. Generally, the safety interval of pesticides with long half-life is also long, but if the half-life is short and the requirements for pesticides in the product are high (low values), the safety interval should also be extended. The safe interval of pesticides is generally longer in the spring and autumn than in the season, and crops in greenhouses are generally longer than those in field crops.
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