干旱区生态环境知识资源中心(Arid): Evaluating the performance of the CCCI-CNI index for estimating N status of winter wheat

Arid

DOI	10.1016/j.eja.2021.126346
	Evaluating the performance of the CCCI-CNI index for estimating N status of winter wheat
	Palka, M.; Manschadi, A. M.; Koppensteiner, L.; Neubauer, T.; Fitzgerald, G. J.
通讯作者	Palka, M (corresponding author), Univ Nat Resources & Life Sci, Inst Agron, Dept Crop Sci, Konrad Lorenz Str 24, A-3430 Vienna, Austria.
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2021
卷号	130
英文摘要	Spectral vegetation indices have proved versatile for rapid, non-destructive estimation of different canopy parameters. A combination of the canopy chlorophyll content index (CCCI) and the canopy nitrogen index (CNI) was used in previous studies to predict the canopy nitrogen (N) status of wheat until the end of stem elongation (Zadoks stage 13-37). The objective of this study was to evaluate and extend the CCCI-CNI approach to the end of booting (Zadoks 49) for winter wheat grown in temperate, high-yielding regions of Austria, where growing conditions, management practices, and N fertilization windows differ from the semi-arid cropping systems where the indices were developed. A comprehensive data set consisting of a time series of crop biomass, N concentration (%N), and spectral reflection measurements from three field experiment conducted during the growing seasons 2017/18, 2018/2019, 2019/20 with four winter wheat cultivars grown under four different N fertilisation levels in Tulln, Austria, was used for this study. While prediction of crop %N and N content (N-cont) using the original parameter values was not satisfactory, modification of the regression model between CCCI and CNI resulted in a skilful prediction of a broad range of %N and N-cont, with R-2 values of 0.81 (RMSE = 0.72 %) and 0.96 (RMSE = 0.83 g m(-2)) for %N and N-cont, respectively. The results indicate that CCCI-CNI is a promising index for estimating N-cont of winter wheat of Austrian winter wheat until Zadoks stage 49, i.e. the end of the time when farmers make decisions about top dress N fertilization.
英文关键词	Winter wheat Remote sensing Vegetation index Nitrogen fertilisation
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000693094600001
WOS关键词	CANOPY CHLOROPHYLL CONTENT ; NITROGEN USE EFFICIENCY ; REMOTE ESTIMATION ; NUTRITION INDEX ; SPECTRAL REFLECTANCE ; CROP YIELD ; MAIZE ; GROWTH ; SENSITIVITIES ; PARAMETERS
WOS类目	Agronomy
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/2XILL650/368419
作者单位	[Palka, M.; Manschadi, A. M.; Koppensteiner, L.] Univ Nat Resources & Life Sci, Inst Agron, Dept Crop Sci, Konrad Lorenz Str 24, A-3430 Vienna, Austria; [Neubauer, T.] TU Wien, Informat & Software Engn Res Div, Inst Informat Syst Engn, Vienna, Austria; [Fitzgerald, G. J.] Agr Victoria, Dept Jobs Precincts & Reg, Horsham, Vic, Australia; [Fitzgerald, G. J.] Univ Melbourne, Sch Agr & Food, Ctr Agr Innovat, Fac Vet & Agr Sci, Melbourne, Vic, Australia
推荐引用方式 GB/T 7714	Palka, M.,Manschadi, A. M.,Koppensteiner, L.,et al. Evaluating the performance of the CCCI-CNI index for estimating N status of winter wheat[J],2021,130.
APA	Palka, M.,Manschadi, A. M.,Koppensteiner, L.,Neubauer, T.,&Fitzgerald, G. J..(2021).Evaluating the performance of the CCCI-CNI index for estimating N status of winter wheat.EUROPEAN JOURNAL OF AGRONOMY,130.
MLA	Palka, M.,et al."Evaluating the performance of the CCCI-CNI index for estimating N status of winter wheat".EUROPEAN JOURNAL OF AGRONOMY 130(2021).