{TAIL ~ Application} of outside forces, such as caused by tilling, {HEAD ~ rainstorms}, irrigation, etc., insures complete breakdown of these granules 
{ TAIL ~ Application } of outside forces , such as caused by tilling , { HEAD ~ rainstorms } , irrigation , etc . , insures complete breakdown of these granules
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH