The side flow ranged from 4 % to 31 % for vegetables, cereals and pulses and most of the side flow for occurs after harvest, e.g. when sorting and storing the products. The main reason for side flow is quality issues. Weather conditions and diseases have a major impact on the quality of the products. We cannot draw many conclusions on side flow amounts for fish based on the results. The reasons for fish side flow are mainly diseases and predators.