Investigation of water productivity of wheat in some irrigation and drainage networks of Khuzestan

Crop water productivity is one of the indexes which are widely used in the issues related to crop productivity and water and is defined as the ratio of the amount of crop yield to the amount of water consumed by the crop. The water consumed by the crop may be supplied by rain, irrigation, or even ir...

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Bibliographic Details
Published in:Arabian journal of geosciences 2023, Vol.16 (6), Article 381
Main Authors: Mohtadi, Mohammad, Albaji, Mohammad, Nasab, Saeed Boroomand
Format: Article
Language:English
Subjects:
Agricultural production
Cereal crops
Crop production
Crop yield
Crops
Drainage patterns
Earth and Environmental Science
Earth science
Earth Sciences
Irrigation
Moisture content
Networks
Productivity
Rainfall
Review Paper
Water
Water content
Wheat
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Summary:Crop water productivity is one of the indexes which are widely used in the issues related to crop productivity and water and is defined as the ratio of the amount of crop yield to the amount of water consumed by the crop. The water consumed by the crop may be supplied by rain, irrigation, or even irrigation plus precipitation. In fact, crop water productivity is an indicator of the amount of production for each unit of consumed water. In this study, the amount of annual crop water productivity was indicated according to the available information and a 6-year data-set, and then the mean value was reported for network’s crop water productivity. In this practice, nine networks, namely, Avan, Dez, Shavoor, Maroon, Fajr and Jaizan, Gotvand, Karkhe, Ramshir, and Shadegan, were studied. Crop water productivity of the networks was estimated according to the crop yield and the volume of consumed water. The highest rates belonged to Avan, Gotvand, and Shadegan, being 1.03, 0.98, and 0.85 (kg·m −3 ) while Ramshir with an average crop water productivity of about 0.44 (kg·m −3 ) had the least value. An analysis over the relationship between crop yield and irrigation shows that wheat crop yield will increase until the time that the crop’s water requirement is supplied, but it does not change or even decreases when the amount of applied water goes beyond the crop’s water requirement; thus as a result, the crop water productivity decreases.
ISSN:1866-7511
1866-7538
DOI:10.1007/s12517-023-11436-8