Nematicides are a class of pesticides used to control harmful nematodes; most nematicides are expanded by the use of insecticides or fungicides;
Below, the Chinese Pesticide Network Xiaobian introduces " the knowledge about pesticide nematicides " from the following points.
The use of nematicides for nematicides is an effective method commonly used in modern agriculture; it is mainly used for soil treatment or seed treatment, and it is toxic from the epidermis of nematodes;
Chemical classification of nematicides
1. Halogenated hydrocarbons are some low-boiling gas or liquid fumigants that are applied in the soil to cause nematode anesthesia to death. After the application, it is necessary to go through a safe interval and then plant the crop. The application of such medicaments is large, and special soil syringes are used. The application is rather cumbersome. Some varieties such as dibromochloropropane have been banned due to toxicity and have been gradually eliminated.
2, organic phosphorus and carbamates have a nematicidal effect, applied in the soil, mainly for contact.
3. Isothiocyanates A soil fungicide that can be decomposed into methyl isothiocyanate in soil and applied as a powder, a liquid or a granule, which can inactivate some thiol enzymes in the nematode and cause poisoning.
Nematicidal toxicity Most nematicides are highly toxic to humans and animals, and some species have phytotoxicity to crops, so special attention should be paid to safe use.
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