The Effect of Drip Strips Irrigation (Tape) on Physical and Economic Productivity of Paddy Fields in Sari City

Document Type : Research Paper


1 Department of water Engineering, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.

2 Water Engineering, sari agricultural sciences natural resources university

3 Department of Agronomy, Faculty of Agronomy Sciences, Sari Agricultural Sciences and Natural Resources University


Population growth, climate change and improper management, have caused a water shortage crisis in the world and especially in Iran. So it is necessary to change attitudes in irrigation management from the emphasis on production per unit area to maximize production per unit of water consumption. The aim of this study was to investigate and evaluate the effect of localized irrigation tape (TIP) on water productivity (CPD) and water economic productivity (NBPD) in paddy fields. The experiment was carried out as a split plot design with three replications in 2019-2020 crop year. In this experiment, the main factor was irrigation method including flood irrigation (FI) and three levels of deficit irrigation; 25, 50 and 100 cm tape space (TP25, TP50, TP100) and the sub-factor was two rice cultivars; Amir and Fajr. Results showed that the highest values ​​of CPD of water consumption and water delivery and NBPD were corresponded to TP25 irrigation treatment for both cultivars. The highest CPD of water consumption was 0.66 and 0.94 kg/m3 in Amir and Fajr cultivars, respectively, and the highest CPD of irrigation water was 0.74 and 1.07 kg/m3 in Amir and Fajr cultivars, respectively. Also, the highest NBPD in Amir and Fajr cultivars were 32107 and 40852 Rials per cubic meter, respectively. The TP25 irrigation treatment increased NBPD in Amir and Fajr cultivars 36 and 63%, respectively. Also, in average about 4500 cubic meters per hectare of water will be saved annually. Therefore, this irrigation treatment increases water productivity of water consumption and water delivery and also economic benefits in both cultivars.


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