Evaluation of AquaCrop Model for the Simulation of Potato Yield and Water Use Efficiency under Different Water Stress Values in Different Growth Cycles

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Ansari M. A.; Egdernezhad A.; Ebrahimipak N. A.

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Journal: Journal of Water and Soil Science Year:2020 | Volume:23 | Issue:4 Page(s): 383-394

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Information Journal Paper

Title

Evaluation of AquaCrop Model for the Simulation of Potato Yield and Water Use Efficiency under Different Water Stress Values in Different Growth Cycles

Author(s)

Ansari M. A. | Egdernezhad A. | Ebrahimipak N. A. | Issue Writer Certificate

Keywords

AquaCrop modelQ2

Potato yieldQ1

Crop modelingQ1

Water stressQ1

Abstract

This study was conducted to evaluate AquaCrop for the simulation of Potato yield and water use efficiency (WUE) under different Water stress values at five levels (E0, E1, E2, E3 and E4, indicating 100, 85, 70, 50 and 30 percent of crop water needed, respectively) in three times during growth cycles (T1, T2, and T3, indicating 50, 100, and 150 days after sowing, respectively). The results showed that AquaCrop had overestimated and underestimated error for the simulation of yield and WUE, respectively. Based on RMSE and NRMSE values, the errors for yield and WUE were acceptable. The maximum and minimum error were also 0. 3 (E1T3) and 3. 15 (E1T2), respectively. The results obtained for WUE showed that the maximum and minimum were 0. 53 (E3T2) and 0. 03 (E4T2), respectively. The average differences between simulated and observed results (ADSO) of WUE for E1, E2, E3 and E4 were 0. 24, 0. 25, 0. 19, and 0. 44 ton. ha-1, respectively; the ADSO of yield for T1, T2, and T3 was 0. 19, 0. 36, and 0. 22 ton. ha-1, respectively. Therefore, AquaCrop showed a high error for WUE when Water stress was increased and crop was in its initial crop growth.

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APA: Copy

Ansari, M. A., Egdernezhad, A., & Ebrahimipak, N. A.. (2020). Evaluation of AquaCrop Model for the Simulation of Potato Yield and Water Use Efficiency under Different Water Stress Values in Different Growth Cycles. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 23(4 ), 383-394. SID. https://sid.ir/paper/362879/en

Vancouver: Copy

Ansari M. A., Egdernezhad A., Ebrahimipak N. A.. Evaluation of AquaCrop Model for the Simulation of Potato Yield and Water Use Efficiency under Different Water Stress Values in Different Growth Cycles. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2020;23(4 ):383-394. Available from: https://sid.ir/paper/362879/en

IEEE: Copy

M. A. Ansari, A. Egdernezhad, and N. A. Ebrahimipak, “Evaluation of AquaCrop Model for the Simulation of Potato Yield and Water Use Efficiency under Different Water Stress Values in Different Growth Cycles,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 23, no. 4 , pp. 383–394, 2020, [Online]. Available: https://sid.ir/paper/362879/en

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