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Responses of Yield and Protein Composition of Wheat to Climate Change
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Modelling Climate Change Impact on Irrigation Water Requirement and Yield of Winter Wheat (Triticum aestivum L.), Barley (Hordeum vulgare L.), and Fodder Maize (Zea mays L.) in the Semi-Arid Qazvin Plateau, Iran

1
Department of Water Engineering, Faculty of Engineering and Technology, Imam Khomeini International University, Qazvin 3414896818, Iran
2
Department of Biogeochemistry of Agroecosystems, Faculty of Agricultural Sciences, Georg-August University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
3
Department of Water and Soil, Faculty of Agricultural Engineering, Shahrood University of Technology, Shahrood 3619995161, Iran
*
Author to whom correspondence should be addressed.
Agriculture 2020, 10(3), 60; https://doi.org/10.3390/agriculture10030060
Received: 15 January 2020 / Revised: 27 February 2020 / Accepted: 29 February 2020 / Published: 3 March 2020
It is very important to determine the irrigation water requirement (IR) of crops for optimal irrigation scheduling under the changing climate. This study aimed to investigate the impact of climate change on the future IR and yield of three strategic crops (winter wheat, barley, fodder maize) in the semi-arid Qazvin Plateau, Iran, for the periods 2016–2040, 2041–2065, and 2066–2090. The Canadian Earth System Model (CanESM2), applying IPCC scenarios rcp2.6, rcp4.5, and rcp8.5, was used to project the monthly maximum and minimum temperatures and monthly precipitation of the region. The results indicated that the maximum and minimum temperatures will increase by 1.7 °C and 1.2 °C, respectively, under scenario rcp8.5 in the period 2066–2090. The precipitation will decrease (1%–13%) under all scenarios in all months of the future periods, except in August, September, and October. The IR of winter wheat and barley will increase by 38%–79% under scenarios rcp2.6 and rcp8.5 in the future periods. The increase in the IR of fodder maize will be very slight (0.7%–4.1%). The yield of winter wheat and barley will decrease by ~50%–100% under scenarios rcp2.6 and rcp8.5 in the future periods. The reduction in the yield of maize will be ~4%. Serious attention has to be paid to the water resources management of the region. The use of drought-tolerant cultivars in the region can be a good strategy to deal with the predicted future climatic conditions. View Full-Text
Keywords: climate change; irrigation water requirement; precipitation; temperature; yield climate change; irrigation water requirement; precipitation; temperature; yield
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Mirgol, B.; Nazari, M.; Eteghadipour, M. Modelling Climate Change Impact on Irrigation Water Requirement and Yield of Winter Wheat (Triticum aestivum L.), Barley (Hordeum vulgare L.), and Fodder Maize (Zea mays L.) in the Semi-Arid Qazvin Plateau, Iran. Agriculture 2020, 10, 60.

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