干旱区生态环境知识资源中心(Arid): Factors Contributing to the Benefits of Foliar Nitrogen Application for Wheat in a Sub-Tropical Winter Environment

Arid

DOI	10.1300/J411v21n01_05
	Factors Contributing to the Benefits of Foliar Nitrogen Application for Wheat in a Sub-Tropical Winter Environment
	Zhu, Grant Xinhong; Midmore, David J.; Doughton, John A.; Cupitt, Damien A.; Lever, Tessa
通讯作者	Zhu, GX
来源期刊	JOURNAL OF CROP IMPROVEMENT
ISSN	1542-7528
EISSN	1542-7536
出版年	2008
卷号	21 期号:1 页码:55-78
英文摘要	Beneficial effects of foliar N application to cereal crops have been widely believed to rely on subsequent rainfall or irrigation in the semi-arid region where in-crop rain is insufficient and unreliable. To verify this, factors contributing to the effects of foliar N application were assessed by implementing foliar N application in trials on three farmers' properties in central Queensland, Australia. Solutions of CRN35 (30 kg N ha(-1) at 1.94 N % w v(-1)), urea and UAN (both 26, 2.25%), and urea (20, 20%; 40, 20%) and UAN (20, 20%; 40, 40%), were applied to wheat at anthesis respectively at the three properties (sites). Adjuvant chemical agents were also applied in mixture form with the N at the latter two sites. At the first site, with foliar N (CRN35) application, grain protein content on average increased by 1.07 percentage points, and by 1.6 in the presence of basal superphosphate. Superphosphate alone also increased grain yield. At the second site, while the applications of UAN and urea increased grain protein content by 1.3 and 0.9 percentage points, respectively, UAN showed superiority to urea in N recovery. At the third site, foliar N applications with or without chemical adjuvant did not affect grain protein content, but due to the higher concentration in the N solution, some of them (excluding UAN40) had negative effects on grain yield, compared to the water only control. Based on our data and supporting literature, to ensure the positive effect on wheat grain protein content, subsequent irrigation or rainfall may not be critical provided that foliar N concentration is lower than 5%. It is also suggested that UAN is superior to urea as an N source for foliar application. For alkaline/sodic soils, while the application of basal superphosphate increased grain yield, the added foliar N ensured an increase of grain protein content. (C) 2008 by The Haworth Press. All rights reserved.
英文关键词	Foliar N application N concentration grain yield an protein content NUE N source chemical agents
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000452688700005
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329144
作者单位	[Zhu, Grant Xinhong] Univ Melbourne, Dept Civil & Environm Engn, Parkville, Vic 3010, Australia; [Midmore, David J.] Cent Queensland Univ, Plant Sci, Rockhampton, Qld 4702, Australia; [Doughton, John A.; Cupitt, Damien A.; Lever, Tessa] QDPI&F, Toowoomba, Qld 4350, Australia
推荐引用方式 GB/T 7714	Zhu, Grant Xinhong,Midmore, David J.,Doughton, John A.,et al. Factors Contributing to the Benefits of Foliar Nitrogen Application for Wheat in a Sub-Tropical Winter Environment[J],2008,21(1):55-78.
APA	Zhu, Grant Xinhong,Midmore, David J.,Doughton, John A.,Cupitt, Damien A.,&Lever, Tessa.(2008).Factors Contributing to the Benefits of Foliar Nitrogen Application for Wheat in a Sub-Tropical Winter Environment.JOURNAL OF CROP IMPROVEMENT,21(1),55-78.
MLA	Zhu, Grant Xinhong,et al."Factors Contributing to the Benefits of Foliar Nitrogen Application for Wheat in a Sub-Tropical Winter Environment".JOURNAL OF CROP IMPROVEMENT 21.1(2008):55-78.