干旱区生态环境知识资源中心(Arid): Impacts of rainfall and temperature on photoperiod insensitive sorghum cultivar : model evaluation and sensitivity analysis

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	Impacts of rainfall and temperature on photoperiod insensitive sorghum cultivar : model evaluation and sensitivity analysis
	Akinseye, F. M.; Folorunsho, A. H.; Ajeigbe; Hakeem, A.; Agele, S. O.
通讯作者	Akinseye, FM (corresponding author), Int Crops Res Inst Semiarid Trop ICRISAT Nigeria, PMB 3491, Kano, Nigeria. ; Akinseye, FM (corresponding author), Fed Univ & Technol, PMB 704, Akure, Ondo State, Nigeria.
来源期刊	JOURNAL OF AGROMETEOROLOGY
ISSN	0972-1665
出版年	2019
卷号	21 期号:3 页码:262-269
英文摘要	A combination of local-scale climate and crop simulation model were used to investigate the impacts of change in temperature and rainfall on photoperiod insensitive sorghum in the Sudanian zone of Mali. In this study, the response of temperature and rainfall to yield patterns of photoperiod insensitive sorghum (Sorghum bicolor L. Moench) using the Agricultural Production Systems Simulator (APSIM) model was evaluated. Following model calibration of the cultivar at varying sowing dates over two growing seasons (2013 and 2014), a long-term simulation was run using historical weather data (1981-2010) to determine the impacts of temperature and rainfall on grain yield, total biomass and water use efficiency at varying nitrogen fertilizer applications. The results showed that model performance was excellent with the lowest mean bias error (MBE) of -2.2 days for flowering and 1.4 days for physiological maturity. Total biomass and grain yield were satisfactorily reproduced, indicating fairly low RMSE values of 21.3% for total biomass and very low RMSE of 11.2 % for grain yield of the observed mean. Simulations at varying N-fertilizer application rate with increased temperature of 2 degrees C, 4 degrees C and 6 degrees C and decreased rainfall by 25 and 50 % (W-25% and W-50%) posed a highly significant risk to low yield compared to increase in rainfall. However, the magnitude of temperature changes showed a decline in grain yield by 10%, while a decrease in rainfall by W-25% and W-50% resulted in yield decline between 5% and 37%, respectively. Thus, climate-smart site-specific utilization of the photoperiod insensitive sorghum cultivar suggests more resilient and productive farming systems for sorghum in semi-arid regions of Mali.
英文关键词	Crop simulation model photoperiod insensitive sorghum rainfall temperature
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000595339900004
WOS关键词	SIMULATION ; APSIM
WOS类目	Agronomy ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369477
作者单位	[Akinseye, F. M.; Ajeigbe; Hakeem, A.] Int Crops Res Inst Semiarid Trop ICRISAT Nigeria, PMB 3491, Kano, Nigeria; [Akinseye, F. M.; Folorunsho, A. H.; Agele, S. O.] Fed Univ & Technol, PMB 704, Akure, Ondo State, Nigeria
推荐引用方式 GB/T 7714	Akinseye, F. M.,Folorunsho, A. H.,Ajeigbe,et al. Impacts of rainfall and temperature on photoperiod insensitive sorghum cultivar : model evaluation and sensitivity analysis[J],2019,21(3):262-269.
APA	Akinseye, F. M.,Folorunsho, A. H.,Ajeigbe,Hakeem, A.,&Agele, S. O..(2019).Impacts of rainfall and temperature on photoperiod insensitive sorghum cultivar : model evaluation and sensitivity analysis.JOURNAL OF AGROMETEOROLOGY,21(3),262-269.
MLA	Akinseye, F. M.,et al."Impacts of rainfall and temperature on photoperiod insensitive sorghum cultivar : model evaluation and sensitivity analysis".JOURNAL OF AGROMETEOROLOGY 21.3(2019):262-269.