Complex sentence: The fungi "Drechslera monoceras" and "Exserohilum monoceras" have been evaluated with some success as potential biocontrol agents of Common Barnyard Grass in rice fields; more research is necessary however because they too may not be host specific enough to be of practical use.
Split into simpler sentences: The fungi "Drechslera monoceras" and "Exserohilum monoceras" have been evaluated with some success as potential biocontrol agents of common barnyard grass in rice fields. More research is necessary, however, because they may not be host-specific enough to be of practical use.