Article (Scientific journals)
Plasticity of wheat yield components in response to N fertilization
Lenoir, Arthur; Slafer, Gustavo A; Siah, Ali et al.
2023In European Journal of Agronomy
Peer Reviewed verified by ORBi
 

Files


Full Text
Accepted manuscript_author_version.pdf
Author preprint (2.01 MB) Creative Commons License - Attribution, Non-Commercial, No Derivative
L'article est disponible à ce DOI : https://doi.org/10.1016/j.eja.2023.126933
Download
Annexes
mmc1.pdf
(705.66 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
nitrogen fertilization; triticum aestivum; yield components; phenotypic plasticity; N fertilization strategy
Abstract :
[en] Nitrogen fertilization is one of the major issues of crop productions in west-Europe. Every year, large quantities of synthetic nitrogen are used to fertilize crops, such as winter wheat (Triticum aestivum), and ensure them high yielding conditions. In return, substantial amount of nitrogen ends up in the environment where it generates pollutions. The combination of strategic and tactical approaches has been suggested to improve the accuracy of nitrogen fertilization decisions and their implementation. Combining strategic and tactical approaches requires a detailed understanding of the dynamic of nitrogen use by the plant to both anticipate and adapt fertilization practices. Inspired by the concept of yield component phenotypic plasticity, this study aimed to analyze the influence of nitrogen fertilization dynamics on yield elaboration and infer strategic decision rules dedicated to wheat yield optimization in a Belgian context. The analysis, implemented from ten-year experiment, was conducted in two different steps. (1) We characterized the effect of nitrogen fertilization on yield and yield components when the crop was submitted to different agro-pedo-climatic contexts, (2) we analyzed the specific influence of nitrogen fertilization dynamic on yield elaboration, normalizing the variables of the experiment to exclude genetic and environmental influences. The study revealed that highest nitrogen fertilization did not automatically lead to the highest yields. High nitrogen fertilization contributed to increase the negative trade-offs between yield components, which limited the efficiency of nitrogen supplies. Conversely, a balanced dynamic of nitrogen supplies was essential to reach high yields while supplying effective amount of nitrogen. From this Belgian dataset, optimal nitrogen fertilization strategies supposed early nitrogen supplies split in two applications to support the initiation phases of grains per m² and another nitrogen supply at flag leaf stage to maintain components of grain per m² while still allowing grain filling. This fertilization structures, adapted to different pedoclimatic contexts would support strategic approach in crop nitrogen nutrition.
Research Center/Unit :
TERRA Research Centre. Plant Sciences - ULiège
Disciplines :
Agriculture & agronomy
Author, co-author :
Lenoir, Arthur  ;  Université de Liège - ULiège > TERRA Research Centre
Slafer, Gustavo A;  UdL - University of Lleida [ES] > Department of Agricultural and Forest Sciences and Engineering ; CREA (Catalonian Institution for Research and Advanced Studies), Barcelona, Spain
Siah, Ali;  Unité Mixte de Recherche transfrontalière 1158 BioEcoAgro > JUNIA
Dumont, Benjamin  ;  Université de Liège - ULiège > TERRA Research Centre > Plant Sciences
Language :
English
Title :
Plasticity of wheat yield components in response to N fertilization
Publication date :
02 August 2023
Journal title :
European Journal of Agronomy
ISSN :
1161-0301
Publisher :
Elsevier, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 12 August 2023

Statistics


Number of views
176 (23 by ULiège)
Number of downloads
164 (21 by ULiège)

Scopus citations®
 
12
Scopus citations®
without self-citations
10
OpenAlex citations
 
12

Bibliography


Similar publications



Contact ORBi