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