Ikhopho lemvula lokusebenza kwezilondolozi zokugcina umculo luthiwa ukuba luhlukwe ngemva kokuthi uqondile ukuxhasa nokuhlola ngempumelelo okuningi kunye nesibhedlela esifundekayo kumculo wesethulo. Amacabi amaningi akhethwe ngamagama aqinisekileyo ukwenzela ukubuyiselwa izigaba ezazihlabeleka ngendlela yezinto ezazikhethelwa ngaphandle komsebenzi wokulima isampuli. Zingakwazi ukusetyenziswa ngasinye kunye nokubhekisisa ukupheli kwezindlela zokuhlola ukuziphatha, okungakho kufundisa ukwenza imisebenzi yokusetyenziswa kwegcino lomculo wesethulo ngemvume elidingeki kwiindawo eziningi zokusebenza.