How to Control Pesticide residues in Chinese Medicinal Materials

Pesticide spraying into crops or soil, after a period of time, due to light, natural degradation, rainforest, high temperature volatilization, microbial decomposition and plant metabolism, most of them have disappeared, but there will still be trace pesticide residues. Pesticide residues are ineffective against diseases, insects and weeds, but can cause harm to people who are directly or indirectly used to treat diseases. With the continuous expansion of the scope and amount of pesticide use, it has become a problem to be solved to control pesticide residues and ensure the safety and health of people and animals. So, how to control pesticide residues to the maximum extent?

1. The rational use of pesticides should be based on the different harvests of traditional Chinese medicine, according to the nature of pesticides, the occurrence and development of diseases, insect pests and weeds, dialectically apply pesticides, and strive to achieve the maximum control effect with the minimum dosage. Rational use of drugs should generally pay attention to the following problems: 1. Symptomatic medication, grasp the critical period of medication and the most effective method of application; 2. Pay attention to the concentration and dosage of the drug, and master the correct dosage; 3. Improve the performance of pesticides, such as adding surfactants to improve the spreading properties of the solution; 4. Rational mixed use of pesticides.

2. The safe use of pesticides shall give priority to prevention and comprehensive prevention in accordance with the regulations on the production and quality Management of traditional Chinese Medicinal Materials (GAP), the provisions on the safe use of pesticides, and the Standards for the safe use of pesticides. In particular, pesticides with high toxicity and high residues should not be used in traditional Chinese medicine, and the application of pesticides must be carried out within a safe interval.

3. Taking anti-toxic measures in the areas seriously polluted by pesticides, if crops that are easy to absorb pesticides are not planted in a certain period of time, new varieties of disease-resistant and insect-resistant crops can be cultivated and the application of pesticides can be reduced.

4. comprehensive control actively carry out agricultural control and biological control, and carry out rational crop rotation and stubble. We will actively develop varieties of pesticides with high efficiency, low toxicity and low residues, and prohibit the use of eliminated pesticides.

5. Grasp the harvest period and avoid harvesting and selling Chinese herbal medicines during the safe interval. Because of the different rates of decomposition and disappearance, the growth trends and seasons of various medicines are also different, so they have different safe intervals, and the farther the time from the last spray at harvest, the better.

6. Decontamination treatment can be carried out to decontaminate the pesticide residues on the surface of crops, fruits and vegetables. Such as through exposure, cleaning and other methods, pesticide residue pollution can also be reduced or removed.