Clodinafop propargyl is a kind of farm weed killer, used after emergence for controlling and killing off annual gramineous weeds of the cereals, including wild oats, ryegrass, green bristlegrass, etc.
Clopyralid is a kind of strongest herbicide, which is used for controlling and killing off broadleaf weeds such as polygonaceae, compositae, leguminosae, umbelliferae, etc.