Abstract

In this study, three different types of distributor head (T, funnel and Y) were tested at three air velocities of 26, 31 and 36 ms^-1, and three different fertilizing rates were selected as 12, 16 and 20 kg da^-1 for two different fertilizers having nitrogen (calcium ammonium nitrate and urea). The best results of flow evenness were obtained with the T type distributor head at the air velocity of 26 m s^-1 and fertilizing rate of 20 kg da^-1 for both calcium ammonium nitrate and urea. In addition, an increase in fertilizing rate had a positive effect on flow evenness.

Key words: Air velocity, distributor head, fertilizing rate, flow evenness, fertilizer.