Optimization of Cropping Pattern and Water Resources at Different Levels of Irrigation for Hot and Dry Areas (Case study: Dehloran Plains, Ilam Province)

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SHAKARI HAMIDREZA; Najarchi Mohsen; JAAFARNIA REZA; MOKHTARI SHAHROO; ALIZADEH HAMZEH ALI

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Journal: Iranian Journal of Soil and Water Research Year:2019 | Volume:50 | Issue:6 Page(s): 1351-1361

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Title

Optimization of Cropping Pattern and Water Resources at Different Levels of Irrigation for Hot and Dry Areas (Case study: Dehloran Plains, Ilam Province)

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Keywords

Hot and dry climateQ1

Nonlinear programmingQ2

Water use efficiencyQ1

Application efficiencyQ1

Irrigation levelsQ2

Abstract

The objective of this research was to save water resources, using Nonlinear programming model to optimize the crop pattern under full and deficit irrigation techniques in eight observation fields for eleven predominant irrigated crops, including winter wheat, barley, rapeseed, autumn sugar beet, corn, sorghum, tomato, onion and potatoes, bean and autumn watermelon in the downstream lands of Doyraj Dehloran reservoir located in the southwest of Iran. The yield reduction and net income of each crop were calculated for 50, 60, 70, 80, 90 and 100% of water requirements during the growing season. The objective function for maximizing net profit with different constraints including constant cultivated area was determined for the existing cropping pattern, the policies of the Ministry of Agriculture Jihad and the proposed pattern. In the case of full irrigation, the results showed that the net profit of the Ministry of Agriculture Jihad cropping pattern was increased 1. 33, 1. 19 and 1. 05% for 100, 90 and 80% of water requirement, respectively. Under deficit irrigation conditions (90 and 80%), water resources are saved 18 and 34%, respectively. The proposed cropping pattern, including four crops of wheat, canola, autumn sugar beet and grain corn increased the net profit of 60, 70, 80 and 90% of the crop water requirement treatments by 14. 4, 33. 6, 54 and 74. 7%, respectively, as compared to the existing cropping pattern. In the proposed deficit irrigation treatments, the water resources were saved 60%, 49%, 35% and 19%, respectively. The results of nonlinear programing model showed that the optimization of cropping pattern with deficit irrigation technique, not only increases the net profits, but also it can be effective in conserving surface and ground water resources.

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APA: Copy

SHAKARI, HAMIDREZA, Najarchi, Mohsen, JAAFARNIA, REZA, MOKHTARI, SHAHROO, & ALIZADEH, HAMZEH ALI. (2019). Optimization of Cropping Pattern and Water Resources at Different Levels of Irrigation for Hot and Dry Areas (Case study: Dehloran Plains, Ilam Province). IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 50(6 ), 1351-1361. SID. https://sid.ir/paper/225865/en

Vancouver: Copy

SHAKARI HAMIDREZA, Najarchi Mohsen, JAAFARNIA REZA, MOKHTARI SHAHROO, ALIZADEH HAMZEH ALI. Optimization of Cropping Pattern and Water Resources at Different Levels of Irrigation for Hot and Dry Areas (Case study: Dehloran Plains, Ilam Province). IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2019;50(6 ):1351-1361. Available from: https://sid.ir/paper/225865/en

IEEE: Copy

HAMIDREZA SHAKARI, Mohsen Najarchi, REZA JAAFARNIA, SHAHROO MOKHTARI, and HAMZEH ALI ALIZADEH, “Optimization of Cropping Pattern and Water Resources at Different Levels of Irrigation for Hot and Dry Areas (Case study: Dehloran Plains, Ilam Province),” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 50, no. 6 , pp. 1351–1361, 2019, [Online]. Available: https://sid.ir/paper/225865/en

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