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- W2159991360 abstract "Supplementary irrigation is an efficient strategy for improving yield and water use efficiency in rainfed agriculture. However, water allocation is a challenge because water resources are restricted. Therefore, water allocation management between irrigated and rainfed fields could be a viable strategy. Water resources for supplementary irrigation in rainfed fields are saved through deficit irrigation in irrigated lands. In this study, water allocation between irrigated and rainfed fields was optimized to maximize total economic income in Kermanshah and Lorestan provinces. Results showed that total income from grains and legumes increased by 443 000 and 397 000 million rials‡ in Kermanshah and Lorestan provinces, respectively. When saved water is applied used for supplementary irrigation only on grain rainfed fields, total income increased by 8.3 and 16.3%. When saved water was transported in between provinces and applied on rainfed fields, total income increased by 14.3% in both provinces. When transported water was applied as supplementary irrigation only on rainfed grain fields, total income increased by 11.3% in both provinces compared to the current situation. Copyright © 2012 John Wiley & Sons, Ltd.RESUMEL'irrigation complementaire est une strategie efficace pour ameliorer le rendement et l'efficacite d'utilisation de l'eau dans l'agriculture pluviale. Mais la repartition de l'eau pour cette pratique est le principal defi, parce que les ressources en eau sont limitees. Par consequent, la gestion repartition de l'eau entre les champs irrigues et pluviaux pourrait etre une strategie viable. Les ressources en eau pour l'irrigation d'appoint dans des domaines non irriguees sont l'eau economisee par l'irrigation deficitaire dans les terres irriguees. Dans cette etude, la repartition de l'eau entre les champs irrigues et pluviaux a ete optimisee pour maximiser le revenu brut dans les provinces Kermanshah et du Lorestan. Les resultats ont montre que le revenu total des cereales et des legumineuses ont ete augmentes de 443 000 et 397 000 millions de rials‡ a Kermanshah et les provinces du Lorestan, respectivement. Si l'eau economisee est appliquee comme irrigation d'appoint seulement sur les champs de cereales non irriguees, le revenu total est augmente de 8,3 et de 16,3% dans les deux provinces, respectivement. Si l'eau economisee est transportee entre les deux provinces et appliquee sur les champs de culture pluviale, le revenu total augmente de 14,3% dans les deux provinces. Si l'eau transportee est appliquee comme l'irrigation d'appoint seulement sur les seuls champs de cereales non irriguees le revenu total est augmente de 11,3% dans les deux provinces par rapport a la situation actuelle. Copyright © 2012 John Wiley & Sons, Ltd." @default.
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- W2159991360 date "2012-11-20" @default.
- W2159991360 modified "2023-09-27" @default.
- W2159991360 title "WATER ALLOCATION OPTIMIZATION FOR SUPPLEMENTARY IRRIGATION IN RAINFED LANDS TO INCREASE TOTAL INCOME CASE STUDY: UPSTREAM KARKHEH RIVER BASIN" @default.
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- W2159991360 doi "https://doi.org/10.1002/ird.1700" @default.
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