Njira zogwiritsira ntchito mfuti yamadzi Mfuti yamadzimu yamadzi ndi chida chomwe chimagwiritsidwa ntchito pothirira ndi kuyeretsa. Nthawi zambiri zimakhala ndi mutu wowaza, chogwirizira, ndi chitoliro chamadzi. Nkhota imatha kusintha malinga ndi zosowa, kuphatikizapo kupopera mbewu, kuphatikiza mitundu yothira, kuwononga mafuta owiritsa,