It is most conveniently prepared in {HEAD ~ aqueous form} immediately prior to {TAIL ~ use}, for example, as a spray for insect infested crops 
immediately prior to
It is most conveniently prepared in { HEAD ~ aqueous form } immediately prior to { TAIL ~ use } , for example , as a spray for insect infested crops
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH