The effect of trickle and furrow irrigation systems on yield and water use efficiency of garlic population of Hamedan

To examine the effect of two irrigation systems (Tape and Furrow Irrigation)، plant spacing and different Amount of nitrogen (0،60،120 kg. ha-1)، a field experiment was laid out in a randomized complete block design arranged in a split Split Plot with three replication since 2004 to 2006. system irrigation (Tape and Furrow Irrigation) were as main plot، plant distance (8 and 12 cm) and different amount of N (0،60،120 kg. ha-1) were as sub plots. The results of combined analysis over two years showed that effect of plant spacing on yield and water use efficiency were significant at 1% and 5 % level، respectively. The yield in two irrigation systems was equal approximately. The effect of Irrigation systems on yield was not significant. The effect of different treatments on number of bulb، number of skine، diameter of bulb and amount of N in bulbs were not significant. The means of water consumption in Tape and Furrow irrigation systems were 2448. 5 and 4940 m3ha-1 respectively. Water consumption in Tape irrigation decreased about 50 % compare to Furrow irrigation. The average of water use efficiency in Tape and Furrow irrigation was 5. 2 and 2. 65 kg/m3، respectively. The maximum of water use efficiency (4. 1 kg/m3) belong to 60 kgha-1 of N treatment. It was concluded that by using Tape irrigation، water consumption was decreased and water use efficiency increased about 100% compare to Furrow irrigation. So، Tape irrigation and 60 kgha-1 of nitrate in garlic cultivation are recommended.