Bijanzadeh, E., Tarazkar, M. H., Emam, Y. (2021). Water Productivity and Virtual Water of Barley Cultivars under Different Irrigation Regimes. , 23(3), 603-616.
E. Bijanzadeh; M. H. Tarazkar; Y. Emam. "Water Productivity and Virtual Water of Barley Cultivars under Different Irrigation Regimes". , 23, 3, 2021, 603-616.
Bijanzadeh, E., Tarazkar, M. H., Emam, Y. (2021). 'Water Productivity and Virtual Water of Barley Cultivars under Different Irrigation Regimes', , 23(3), pp. 603-616.
Bijanzadeh, E., Tarazkar, M. H., Emam, Y. Water Productivity and Virtual Water of Barley Cultivars under Different Irrigation Regimes. , 2021; 23(3): 603-616.

Water Productivity and Virtual Water of Barley Cultivars under Different Irrigation Regimes

Journal of Agricultural Science and Technology
Article 9, Volume 23, Issue 3, 2021, Pages 603-616    PDF (808.87 K)
Document Type: Original Research
Authors
E. Bijanzadeh* 1; M. H. Tarazkar2; Y. Emam3
1Department of Agroecology, College of Agriculture and Natural Resources of Darab, Shiraz University, Shiraz, Islamic Republic of Iran.
2Department of Agricultural Economics, School of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
3Department of Plant Production and Genetics, School of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
Abstract
To remain viable in facing with increasing costs, farmers need to increase irrigation Water Productivity (WP) and save Virtual Water (VW). To evaluate the WP and VW for five barley cultivars (Reyhan, Nimrooz, Valfajr, Zehak, and Yusof) under different irrigation regimes [well-watered (100% Field Capacity; FC), mild water stress (75% FC), severe water stress (50% FC), and extremely severe water stress (25% FC)], a two-year field experiment was laid out in Darab, Fars Province, Iran, during 2014 and 2015 growing seasons. Results showed that change in moisture stress from well-watered to extremely severe water stress, was associated with a significant increase in WP and Economic Water Productivity (EWP) for straw and biological yield. A positive linear relationship was found between grain yield and VW, and the lowest VW was found in the range of 3,314 to 3,451 kg ha-1 of grain yield. Interestingly, for all irrigation regimes, Zehak and Yusof cultivars had greater WP for the grain yield. Furthermore, VW for biological yield of Yusof cultivar sharply decreased from 0.410 m3 kg-1 in well-watered treatment to 0.164 m3 kg-1 under extremely water stress conditions in both years. Comparison of Zehak and Yusof cultivars with Reyhan, Nimrooz and Valfajr showed that under water stress conditions, the first two cultivars showed significantly lower VW for the grain yield than the other cultivars. Indeed, Yusof and Zehak cultivars showed the lowest Economic Virtual Water (EVW), which was in the range of 0.054 to 0.091 m3 1,000 Rials-1, under extremely water stress conditions. Thus, to achieve optimum EWP and EVW and attaining stable yields under semi-arid conditions, suitable barley cultivars such as Zehak and Yusof could be irrigated with less water (i.e. 25 to 50% FC).
Keywords
Biological yield; Economic virtual water; Water productivity of grain yield; cv. Yusof; cv. Zehak
References
Statistics
Article View: 172
PDF Download: 126
Statistics
Number of Journals45
Number of Issues2,174
Number of Articles24,685
Article View25,079,610
PDF Download17,778,415