Speedster is a selective post-emergent herbicide recommended for the control of grassy weeds, especially Echinochloa spp. in direct seeded and transplanted rice. It contains Fenoxaprop-p-ethyl as active ingredient which offers flexibility in application window. When combined as tank-mix with broad leaf herbicide like Sunrice it can offer total control of rice weed spectrum. Speedster is absorbed by leaves and stems of the plants and is translocated systemically. It predominantly inhibits the synthesis of fatty acids in the meristem tissue of grassy weeds.