Used as a systemic organophosphorus insecticide and acaricide in agriculture, particularly effective against sucking insects like aphids, mites, and thrips on crops such as citrus, cotton, and ornamental plants. It is applied through foliar sprays and is absorbed rapidly by plant tissues, providing internal protection. Due to its high toxicity to mammals and potential environmental persistence, its use is banned or severely restricted in many countries. It has also been used in pest control for greenhouse crops, but safer alternatives have largely replaced it in modern practice.