Arid
DOI10.13031/trans.12048
SIMULATING EVAPOTRANSPIRATION AND YIELD RESPONSE OF SELECTED CORN VARIETIES UNDER FULL AND LIMITED IRRIGATION IN THE TEXAS HIGH PLAINS USING DSSAT-CERES-MAIZE
Marek, G. W.1; Marek, T. H.2; Xue, Q.2; Gowda, P. H.3; Evett, S. R.1; Brauer, D. K.1
通讯作者Marek, G. W.
来源期刊TRANSACTIONS OF THE ASABE
ISSN2151-0032
EISSN2151-0040
出版年2017
卷号60期号:3页码:837-846
英文摘要

Water scarcity due to drought and groundwater depletion has led to increased interest in deficit irrigation strategies that reduce irrigation requirements while maintaining profitable yields. This has resulted in an increase in the number of modeling studies aimed at evaluating crop response to limited irrigation strategies. However, the ability of widely used crop simulation models to accurately represent responses to limited irrigation has not been thoroughly evaluated. The primary objective of this study was to determine the efficacy of DSSAT-CERES-Maize (ver. 4.6.1.0) to simulate leaf area index (LAI), crop evapotranspiration (ET), and yield response to full (100%) and limited (75% and 50%) irrigation regimes for two corn varieties. Comparisons of simulated and measured data from full and limited irrigation treatments of` two drought-tolerant corn hybrids (DuPont Pioneer AQUAmax P1151HR and Pioneer 33D49) grown in the Texas Panhandle in 2013 and 2014 were evaluated. Simulated in-season daily crop ET values for P1151HR grown in 2013 were also compared to those measured by precision large weighing lysimeters at Bushland, Texas. Additionally, a comparison of simulated and measured soil water content (SWC) within the root zone was performed for P1151HR grown in 2013. Simulated LAI for fully irrigated treatments approximated measured values reasonably well, although manipulation of plant genetic parameters failed to match measured LAI during the period between maximum LAI and the beginning of crop senescence in the 50% irrigation treatments. Similarly, simulated yield values approximated measured values for the fully irrigated treatments, while considerable overestimation of yield occurred in the limited irrigation treatments for both varieties. However, consistent overestimation of both LAI and yield for the limited irrigation treatments suggests a functional relationship between LAI and yield. Further, DSSAT overestimated crop ET by 16% for fully irrigated P1151HR and by 40% for limited irrigation treatments in 2013 as compared to measured lysimeter values. Corresponding underestimations of SWC were also observed in neutron probe measurements for both treatments. Overestimation of ET and yield and corresponding underestimation of SWC in limited irrigation treatments were mainly due to overestimation of LAI in those treatments, indicating a potential deficiency in the water stress algorithms. Additional comparisons of agronomic and lysimeter-based water balance data are needed to corroborate the findings of this study. Further investigations into the calculation of reference evapotranspiration (ETo), crop coefficients, and water stress functions in DSSAT are needed in order to provide suggestions for model improvement.


英文关键词CERES-Maize Crop modeling DSSAT Evapotranspiration Limited irrigation Lysimeters Maize Semi-arid Sprinkler irrigation Weighing lysimeters
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000404839000024
WOS关键词WEIGHING LYSIMETER ; SWAT MODEL ; UNCERTAINTY ; CALIBRATION ; ENVIRONMENT ; CHINA ; FIELD
WOS类目Agricultural Engineering
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/202706
作者单位1.ARS, USDA, Conservat & Prod Res Lab, Bushland, TX USA;
2.Texas A&M AgriLife Res, Amarillo, TX USA;
3.ARS, USDA, Grazinglands Res Lab, El Reno, OK USA
推荐引用方式
GB/T 7714
Marek, G. W.,Marek, T. H.,Xue, Q.,et al. SIMULATING EVAPOTRANSPIRATION AND YIELD RESPONSE OF SELECTED CORN VARIETIES UNDER FULL AND LIMITED IRRIGATION IN THE TEXAS HIGH PLAINS USING DSSAT-CERES-MAIZE[J],2017,60(3):837-846.
APA Marek, G. W.,Marek, T. H.,Xue, Q.,Gowda, P. H.,Evett, S. R.,&Brauer, D. K..(2017).SIMULATING EVAPOTRANSPIRATION AND YIELD RESPONSE OF SELECTED CORN VARIETIES UNDER FULL AND LIMITED IRRIGATION IN THE TEXAS HIGH PLAINS USING DSSAT-CERES-MAIZE.TRANSACTIONS OF THE ASABE,60(3),837-846.
MLA Marek, G. W.,et al."SIMULATING EVAPOTRANSPIRATION AND YIELD RESPONSE OF SELECTED CORN VARIETIES UNDER FULL AND LIMITED IRRIGATION IN THE TEXAS HIGH PLAINS USING DSSAT-CERES-MAIZE".TRANSACTIONS OF THE ASABE 60.3(2017):837-846.
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