Usually buyers accept two grades of paddy. Grade one paddy is well winnowed and free of foreign material and diseased grains, and is bought at a premium price, otherwise it is down-graded to grade two and bought at an inferior price
Nthawi zambiri ogula amalola mpunga wamagulu awiri. Gulu loyamba ndi mpunga womwe wapetedwa bwino ndipo wopanda zinyalala kapena wamatenda, ndipo umagulidwa pamtengo wokwera kwambiri, ngati sichoncho umatsitsidwa kufika gulu lachiwiri ndipo umagulidwa pamtengo wotsika kwambiri