This dataset contains weed cover observation in rainfed rice field considering overall weed cover and cover per weed species, rice yield and weed biomass at rice harvest to study the effect of soil cover management (tillage or no tillage) and weed management (weedy, unweeded, or weed and stylosanthes (in NT cropping systems) weeded) and weed and stylosanthes harmfulness on rainfed rice yield. We conducted this experiment from November 2015 to April 2018, consequently it covers three rainfed rice cropping seasons.