Fipronil is a phenylpyrazole insecticide with a broad insecticidal spectrum. It primarily acts as a stomach poison against pests, with some contact and systemic effects. Its mechanism of action involves inhibiting chloride metabolism controlled by γ-aminobutyric acid (GABA) in insects. Therefore, it exhibits high insecticidal activity against important pests such as aphids, leafhoppers, planthoppers, lepidopteran larvae, flies, and coleopterans, without causing phytotoxicity to crops.
This agent can be applied to the soil or sprayed as a foliar spray. Soil application effectively controls corn root leaf beetles, wireworms, and cutworms. Foliar spraying provides high levels of control against diamondback moths, cabbage white butterflies, and rice thrips, with a long residual effect.
Fipronil is also widely used as a sanitary insecticide, primarily for controlling cockroaches, ants, and other pests.
Fipronil has a broad insecticidal spectrum, with contact, stomach poison, and moderate systemic action. It controls both underground and above-ground pests. It can be used for foliar application, soil treatment, and seed treatment.
Foliar application of 25-50g active ingredient/ha can effectively control potato leaf beetles, diamondback moths, pink diamondback moths, Mexican boll weevils, and flower thrips.
In rice paddies, 50-100g active ingredient/ha is effective in controlling stem borers and brown planthoppers.
Foliar application of 6-15g active ingredient/ha can control grasshoppers and desert grasshoppers.
Soil application of 100-150g active ingredient/ha is effective in controlling corn root leaf beetles, wireworms, and cutworms.
Treating corn seeds with 250-650g active ingredient/100kg of seeds is effective in controlling corn wireworms and cutworms.
Fipronil primarily targets aphids, leafhoppers, lepidopteran larvae, flies, and coleopteran pests. It is recommended by many pesticide experts as a preferred alternative to highly toxic organophosphate pesticides.
