Complex sentence: A variety of chemicals have been shown to be effective in controlling the plant, the most useful of which include glyphosate, triclopyr, fluridone, imazamox, and imazapyr.
Split into simpler sentences: A variety of chemicals have been shown to be effective in controlling the plant. The most useful of which includes glyphosate, triclopyr, fluridone, imazamox, and imazapyr.