干旱区生态环境知识资源中心(Arid): GRAIN YIELD, CROP AND BASAL EVAPOTRANSPIRATION, PRODUCTION FUNCTIONS AND WATER PRODUCTIVITY RESPONSE OF DROUGHT-TOLERANT AND NON- DROUGHT-TOLERANT MAIZE HYBRIDS UNDER DIFFERENT IRRIGATION LEVELS AND POPULATION DENSITIES: PART I. IN WESTERN NEBRASKA'S SEMI-ARID ENVIRONMENTS

Arid

DOI	10.13031/aea.12870
	GRAIN YIELD, CROP AND BASAL EVAPOTRANSPIRATION, PRODUCTION FUNCTIONS AND WATER PRODUCTIVITY RESPONSE OF DROUGHT-TOLERANT AND NON- DROUGHT-TOLERANT MAIZE HYBRIDS UNDER DIFFERENT IRRIGATION LEVELS AND POPULATION DENSITIES: PART I. IN WESTERN NEBRASKA'S SEMI-ARID ENVIRONMENTS
	Mohammed, A. T.1; Irmak, S.1; Kranz, W. L.1; van Donk, S.2; Yonts, C. D.1
通讯作者	Irmak, S.
来源期刊	APPLIED ENGINEERING IN AGRICULTURE
ISSN	0883-8542
EISSN	1943-7838
出版年	2019
卷号	35 期号:1 页码:61-81
英文摘要	Grain yield, crop evapofranspiration (ETc), basal evapofranspiration (ETb), ETc-yield production functions (ETYPF), and crop water use efficiency (CWUE) response of three drought-tolerant (DT) and one non-drought-tolerant (NDT) maize (Zea mays L.) hybrids to two plant population densities (PPDs) [84,000 plants ha(-1) (high PPD) and 59,300 plants ha(-1) (low PPD)] and three irrigation levels were researched at two semi-arid locations: North Platte (WCREC) and Scottsbluff (MAL), Nebraska, in 2010, 2011, and 2012. The irrigation levels were fully irrigated (FIT), early cutoff (SCOT), and rainfed (RFT). Precipitation in 2010 was above average, 2011 was a normal year, and 2012 was one of the driest and hottest years in Nebraska's recorded history. Generally, DT hybrids performed better than the NDT hybrid. The performances of the DT hybrids were stronger in the driest year and driest location (MAL), especially with low PPD. ETc exhibited interannual variation for the same hybrid in the same location and between the two locations and also with the PPD and irrigation treatments. There were significant differences (P<0.05) between the ETc values for the same hybrids across three irrigation treatments. The grain yield response to hybrids and treatments also exhibited substantial variation for the same hybrid between the PPDs and had inter-annual variation between the years and locations. The greatest grain yields of 14.6 and 18.0 Mg ha(-1) were observed with 548 and 837 mm of ETc, which were recorded for the DT hybrid H3 (high PPD) at WCREC and MAL, respectively. There were significant differences (P<0.05) in performance among the DT hybrids in performance variables (ETc , ETb, ETYPF, CWUE). In most cases, the DT hybrids produced greater grain yield than the NDT hybrid with lower ETc. In terms of ETYPF response for individual hybrids, the slope of the production functions exhibited an inter-annual variation between the hybrids and for the same hybrids between the years and location for both high and low PPDs. All hybrids exhibited a linear yield response to increasing ETc in all years at both locations with positive slopes in all cases with DT hybrids having the greatest slopes. The ETb values also exhibited a substantial variation between the hybrids, years, locations, and PPDs. Generally, DT hybrids had sizably lower ETb values than the NDT hybrid in both PPD levels. It was concluded that DT hybrids increase the grain yield production per unit of ETc in semi-arid regions not only during very dry and hot year, but also during the growing season with favorable rainfall and climate conditions.
英文关键词	Basal evapofranspiration Drought-tolerance Maize Yield production functions
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000460407700008
WOS关键词	USE EFFICIENCY ; RISK
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/2XILL650/214254
作者单位	1.Univ Nebraska, 239 LW Chase Hall, Lincoln, NE 68583 USA; 2.Iteris Inc, North Platte, NE USA
推荐引用方式 GB/T 7714	Mohammed, A. T.,Irmak, S.,Kranz, W. L.,et al. GRAIN YIELD, CROP AND BASAL EVAPOTRANSPIRATION, PRODUCTION FUNCTIONS AND WATER PRODUCTIVITY RESPONSE OF DROUGHT-TOLERANT AND NON- DROUGHT-TOLERANT MAIZE HYBRIDS UNDER DIFFERENT IRRIGATION LEVELS AND POPULATION DENSITIES: PART I. IN WESTERN NEBRASKA'S SEMI-ARID ENVIRONMENTS[J],2019,35(1):61-81.
APA	Mohammed, A. T.,Irmak, S.,Kranz, W. L.,van Donk, S.,&Yonts, C. D..(2019).GRAIN YIELD, CROP AND BASAL EVAPOTRANSPIRATION, PRODUCTION FUNCTIONS AND WATER PRODUCTIVITY RESPONSE OF DROUGHT-TOLERANT AND NON- DROUGHT-TOLERANT MAIZE HYBRIDS UNDER DIFFERENT IRRIGATION LEVELS AND POPULATION DENSITIES: PART I. IN WESTERN NEBRASKA'S SEMI-ARID ENVIRONMENTS.APPLIED ENGINEERING IN AGRICULTURE,35(1),61-81.
MLA	Mohammed, A. T.,et al."GRAIN YIELD, CROP AND BASAL EVAPOTRANSPIRATION, PRODUCTION FUNCTIONS AND WATER PRODUCTIVITY RESPONSE OF DROUGHT-TOLERANT AND NON- DROUGHT-TOLERANT MAIZE HYBRIDS UNDER DIFFERENT IRRIGATION LEVELS AND POPULATION DENSITIES: PART I. IN WESTERN NEBRASKA'S SEMI-ARID ENVIRONMENTS".APPLIED ENGINEERING IN AGRICULTURE 35.1(2019):61-81.