Fipronil is a phenylpyrazole insecticide with a broad-spectrum insecticidal effect. Its mechanism of action is to block the chloride channels mediated by γ-aminobutyric acid and glutamate in insects, leading to overexcitement of the insect central nervous system and eventual death. Fipronil mainly acts as a stomach poison on pests, and has contact and certain systemic effects. It has high insecticidal activity against important pests such as aphids, leafhoppers, planthoppers, lepidoptera larvae, flies and coleoptera, and has no phytotoxicity to crops. The agent can be applied to the soil or sprayed on the leaves. It can effectively prevent and control corn root beetles, wireworms and cutworms when applied to the soil. When sprayed on the leaves, it has a high level of control effect on diamondback moth, cabbage butterfly, rice thrips, etc., and the effect is long-lasting.
Specifically, the use method and control targets of fipronil include:
Soil treatment: 100~150g of active ingredient/hectare applied to the soil can effectively prevent and control corn root beetles, wireworms and cutworms.
Foliar spray: 25~50g active ingredient/hectare foliar spraying can effectively control potato leaf beetles, diamondback moths, cabbage moths, Mexican boll weevils and flower thrips.
Seed treatment: 250~650g active ingredient/100kg seed treatment of corn seeds can effectively control corn wireworms and cutworms.
In addition, fipronil can also be used as a household insecticide, mainly for preventing and killing pests such as cockroaches and ants.
