Technical and Economical Comparison of Two Irrigation Systems, Tape and Furrow Irrigation and Different Levels of Nitrogen on Yield, Water use Efficiency of Garlic Product

Recent droughts and water crisis require the use of modern irrigation systems In order to properly use and increase the productivity of water resources. Therefore, this study was carried out to investigate the effect of two irrigation systems (Tape and Furrow Irrigation system) and different nitrogen levels (0,60,120 kg .ha-1) on yield, water use efficiency of garlic product at Ekbatan station, Hamedan Agricultural and Natural Resources Research Center. Experiment was laid out in a randomized complete block design arranged in a split plot with three replication. Two irrigation systems (Tape and Furrow Irrigation) were as main plot and different amount of N (0, 60, 120 kg.ha-1) were as sub plots. The results of analysis showed that effect of different irrigation system on yield and bulb weight wasn’t significant and the yield was equal in two irrigation systems approximately. The average of water productivity in two irrigation systems was 5.6 and 2.4 Kg. m-3. Water consumption in Tape irrigation relative to Furrow irrigation decreased about 54 %. The amount of water productivity in tape irrigation was increased about 103 percent relative to furrow irrigation. Respectively. The maximum of water productivity (4.27 kg/m3) related to 60 kg.ha-1 of N treatment. Considering that the cost-benefit ratio in two scenarios: increasing the area under cultivation and preservation of water resources was 2.84 and 2.54 respectively, therefore the use of drip irrigation system is economical for the garlic product.