Imishini yokumboza imbewu idlala indima ebalulekile emkhakheni wezolimo ngokuthuthukisa ukusebenza nokusebenza kwembewu. Le mishini isebenzisa ungqimba lokuvikela imbewu ngaphambi kokuthi ihlwanyelwe, okungafaka izinto ezahlukahlukene ezinjengomanyolo, izibulala-zinambuzane, noma izikhuthazi zokukhula. Inhloso eyinhloko ukuthuthukisa ukuhluma kwembewu, ukuvikela imbewu ezinambuzane nezifo, nokuqinisekisa ukuthi ziphinde ziyiphinda