Wokolola adapangidwa ndi Cyrus McCormick. Harvester Ndi makina ophatikizika okolola mbewu. Malizitsani kukolola ndi kupuntha nthawi imodzi, ndipo sonkhanitsani tirigu mu nkhokwe yosungiramo, ndiyeno tumizani tirigu ku galimoto yonyamulira kupyolera mu lamba wotumizira. Angathenso kukolola pamanja, ndipo udzu wa mpunga, tirigu ndi mbewu zina zimawazidwa m’munda, ndiyeno wotuta amatengedwa ndi kupunthidwa. Makina odulira mbewu okolola mbewu ndi udzu wa mpunga, tirigu ndi mbewu zina zambewu. Kuphatikizira chokolola, winder, baler, chimanga chophatikiza chokolola ndi chopunthira mbewu. Zokolola zambewu zimapangidwa pogwiritsa ntchito zida zosiyanasiyana zokolola ndi zopunthira.