Carfentrazone-ethyl is an effective post-emergence herbicide widely used in rice cultivation to control broadleaf weeds such as smartweed, water spinach, and other troublesome dicotyledonous species. Acting as a protoporphyrinogen oxidase (PPO) inhibitor, it rapidly disrupts weed cell membranes, causing quick desiccation and death within 24 to 48 hours. Carfentrazone-ethyl is valued for its fast action, low residue, and high selectivity, making it safe for rice plants while efficiently managing weed competition. It can be applied in both transplanted and direct-seeded rice systems, often as part of integrated weed management programs or tank-mixed with other herbicides to broaden weed control spectrum. Proper application timing and dosage are critical to maximize efficacy and minimize crop injury.