干旱区生态环境知识资源中心(Arid): Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Arid

DOI	10.1515/opag-2017-0065
	Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia
	Zemichael, Beyenesh; Dechassa, Nigussie; Abay, Fetien
通讯作者	Zemichael, B
来源期刊	OPEN AGRICULTURE
ISSN	2391-9531
出版年	2017
卷号	2 期号:1 页码:611-624
英文摘要	Wheat is an important staple crop in arid and semi-arid areas of the Tigray region of Ethiopia. However, the yield and quality of the crop is markedly constrained by low soil fertility, inappropriate rate and timing of nitrogen application. Therefore, an experiment was conducted to elucidate the effect of different rates and timing of nitrogen fertilizer application on the yield, quality, and nitrogen use efficiency of bread wheat varieties during 2013 and 2014 main cropping seasons. The treatments consisted of four rates of nitrogen (23, 46, 69, and 92 kg N ha(-1)), three timing of N application (1/2 at sowing + 1/2 at tillering, 1/4 at sowing + 1/2 at tillering + 1/4 at anthesis, and 1/3rd at sowing + 1/3 rd at tillering + 1/3rd at anthesis) and two bread wheat varieties (Picaflor and Mekelle I) and 0 kg N ha(-1) (control). The experiment was laid out as a randomized complete block design in a factorial arrangement with three replications. During both cropping years, increasing the rate of nitrogen application up to 69 kg N ha(-1) significantly (P< 0.01) increased the total aboveground biomass and grain yields of the crop and decreased with further increase of applied N fertilizer. The highest aboveground biomass (6871 kg ha(-1)) and grain yields (2775 kg ha(-1)) of the crop were obtained in response to the application of 69 kg N ha(-1), in 2013. The equivalent value for total aboveground biomass and grain yields during 2014 cropping season were (8815 kg ha(-1) and 3695 kg ha(-1)), respectively. The highest apparent recovery efficiency of 75% was obtained in response to the rate of 69 kg N ha-1applied in three splits of 1/4 at planting, 1/2 at tillering, and 1/4 at anthesis. The equivalent values for the highest apparent recovery was 81% in the 2014 cropping season. The highest agronomic efficiency of 25 kg kg(-1) and utilization efficiency of 55 kg kg(-1) were recorded at the rate of 46 kg N ha(-1) in three splits of 1/4 at planting, 1/2 at tillering and 1/4 at anthesis. The equivalent values in 2014 were 34 kg kg(-1) and 78 kg kg(-1), respectively. Grain protein concentration increased from 10.57% to 11.82% in 2013 and from 8.97% to 9.84% in 2014 cropping season as the rate increased from 23 kg N ha(-1) to 69 kg N ha(-1). The acceptable marginal rate of return (1618%) and highest net benefit (34141ETB ha(-1)) was obtained from 69 kg N ha(-1) for the variety Picaflor. In conclusion, applying 69 kg N ha(-1) in three splits of 1/4 at planting, 1/2 at tillering and 1/4 at anthesis resulted in optimum grain yield, protein concentration and economic return of the crop.
英文关键词	agronomic nitrogen efficiency grain yield nitrogen recovery efficiency nitrogen utilization efficiency protein concentration
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000432144500065
WOS关键词	LOWLAND RICE ; MANAGEMENT ; FERTILIZATION
WOS类目	Agriculture, Multidisciplinary
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/2XILL650/332575
作者单位	[Zemichael, Beyenesh] Tigray Agr Res Inst, POB 498, Mekelle, Tigray, Ethiopia; [Dechassa, Nigussie] Haramaya Univ, Coll Agr & Environm Sci, POB 138, Dire Dawa, Ethiopia; [Abay, Fetien] Mekelle Univ, Dept Dry Land Crop & Hort Sci, POB 231, Mekelle, Ethiopia
推荐引用方式 GB/T 7714	Zemichael, Beyenesh,Dechassa, Nigussie,Abay, Fetien. Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia[J],2017,2(1):611-624.
APA	Zemichael, Beyenesh,Dechassa, Nigussie,&Abay, Fetien.(2017).Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia.OPEN AGRICULTURE,2(1),611-624.
MLA	Zemichael, Beyenesh,et al."Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia".OPEN AGRICULTURE 2.1(2017):611-624.