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DOI	10.1080/01904167.2020.1711943
	Understanding the response of sorghum cultivars to nitrogen applications in the semi-arid Nigeria using the agricultural production systems simulator
	Akinseye, Folorunso M.1,2; Ajegbe, Hakeem A.1; Kamara, Alpha Y.3; Adefisan, Elijah A.2,4; Whitbread, Anthony M.5
通讯作者	Akinseye, Folorunso M.
来源期刊	JOURNAL OF PLANT NUTRITION
ISSN	0190-4167
EISSN	1532-4087
出版年	2020
卷号	43 期号:6 页码:834-850
英文摘要	The Agricultural Production Systems simulator (APSIM) model was calibrated and evaluated using two improved sorghum varieties conducted in an experiment designed in a randomized complete block, 2014-2016 at two research stations in Nigeria. The results show that the model replicated the observed yield accounting for yield differences and variations in phenological development between the two sorghum cultivars. For early-maturing cultivar (ICSV-400), the model indicated by low accuracy with root means square error (RMSE) for biomass and grain yields of 20.3% and 23.7%. Meanwhile, Improved-Deko (medium-maturing) cultivar shows the model was calibrated with low RMSE (11.1% for biomass and 13.9% for grain). Also, the model captured yield response to varying Nitrogen (N) fertilizer applications in the three agroecological zones simulated. The N-fertilizer increased simulated grain yield by 26-52% for ICSV-400 and 19-50% for Improved-Deko compared to unfertilized treatment in Sudano-Sahelian zone. The insignificant yield differences between N-fertilizer rates of 60 and 100 kgha(-1) suggests 60 kgNha(-1) as the optimal rate for Sudano-Sahelian zone. Similarly, grain yield increased by 23-57% for ICSV-400 and 19-59% for Improved Deko compared to unfertilized N-treatment while the optimal mean grain yield was simulated at 80 kgNha(-1) in the Sudan savanna zone. In the northern Guinea savanna, mean simulated grain yield increased by 8-20% for ICSV-400 and 12-23% for Improved-Deko when N-fertilizer was applied compared to unfertilized treatment. Optimum grain yield was obtained at 40 kgha(-1). Our study suggests a review of blanket recommended fertilizer rates across semi-arid environments for sorghum to maximize productivity and eliminate fertilizer losses, means of adaptation strategies to climate variability.
英文关键词	APSIM climate variability N-fertilizer rate rain-fed agriculture water use efficiency
类型	Article
语种	英语
国家	Nigeria ; India
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000507446800001
WOS关键词	CERES-MAIZE MODEL ; USE EFFICIENCY ; APSIM-MODEL ; WATER ; WEST ; SEASON ; CROPS ; MANAGEMENT ; ECONOMICS ; BICOLOR
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
EI主题词	2020-01-14
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312477
作者单位	1.Int Crops Res Inst Semiarid Trop ICRISAT Nigeria, PMB 3491, Kano, Nigeria; 2.Fed Univ Technol Akure, Akure FUTA, Dept Meteorol & Climate Sci, Akure, Ondo State, Nigeria; 3.IITA, Kano, Nigeria; 4.African Ctr Meteorol Applicat Dev, Niamey, Niger; 5.Int Crops Res Inst Semiarid Trop ICRISAT Patanche, Hyderabad, Telangana, India
推荐引用方式 GB/T 7714	Akinseye, Folorunso M.,Ajegbe, Hakeem A.,Kamara, Alpha Y.,et al. Understanding the response of sorghum cultivars to nitrogen applications in the semi-arid Nigeria using the agricultural production systems simulator[J],2020,43(6):834-850.
APA	Akinseye, Folorunso M.,Ajegbe, Hakeem A.,Kamara, Alpha Y.,Adefisan, Elijah A.,&Whitbread, Anthony M..(2020).Understanding the response of sorghum cultivars to nitrogen applications in the semi-arid Nigeria using the agricultural production systems simulator.JOURNAL OF PLANT NUTRITION,43(6),834-850.
MLA	Akinseye, Folorunso M.,et al."Understanding the response of sorghum cultivars to nitrogen applications in the semi-arid Nigeria using the agricultural production systems simulator".JOURNAL OF PLANT NUTRITION 43.6(2020):834-850.