Amagwiritsidwa ntchito kwambiri polandira mbewu zosakonzedwa, kusamalira, kuyeretsa, komanso chitha kugwiritsidwa ntchito kuyeretsa zopangira ndi zinthu mu ufa, mpunga, chakudya, kukonza chakudya ndi makampani opanga mankhwala. Kuyeretsa ndi sieve yosiyana siyana, imatha kuyeretsa ndi kuyesa tirigu, chimanga, mpunga, mbewu zamafuta ndi zinthu zina. Tirigu nthawi zambiri amakhala ndi skrini ya Φ2.