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Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat

Critical nitrogen (N) dilution curves (CNDCs) have been developed to describe the dilution dynamic of N and to diagnose N status in plants. In this study, to develop a convenient alternative CNDC determination method, four field experiments involving different N rates (0–360 kg N ha(-1)) and six whe...

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Autores principales: Jiang, Jie, Wang, Cuicun, Wang, Yu, Cao, Qiang, Tian, Yongchao, Zhu, Yan, Cao, Weixing, Liu, Xiaojun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7146448/
https://www.ncbi.nlm.nih.gov/pubmed/32178244
http://dx.doi.org/10.3390/s20061577
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author Jiang, Jie
Wang, Cuicun
Wang, Yu
Cao, Qiang
Tian, Yongchao
Zhu, Yan
Cao, Weixing
Liu, Xiaojun
author_facet Jiang, Jie
Wang, Cuicun
Wang, Yu
Cao, Qiang
Tian, Yongchao
Zhu, Yan
Cao, Weixing
Liu, Xiaojun
author_sort Jiang, Jie
collection PubMed
description Critical nitrogen (N) dilution curves (CNDCs) have been developed to describe the dilution dynamic of N and to diagnose N status in plants. In this study, to develop a convenient alternative CNDC determination method, four field experiments involving different N rates (0–360 kg N ha(-1)) and six wheat varieties were performed at different eco-sites from 2014 to 2019. The normalised difference red-edge (NDRE) index extracted from the RapidSCAN CS-45 (Holland Scientific Inc., Lincoln, NE, USA) sensor was used as a driving factor instead of plant dry matter (PDM) to establish a new alternative winter wheat CNDC. The newly developed CNDC was described by the equation Nc = 0.90NDRE(−0.88), when NDRE values were ≤ 0.19 and constant Nc = 3.81%, which was independent of the NDRE values. Compared to PDM-derived CNDC (R(2) = 0.73) developed with the same dataset, a comparable precision was obtained using NDRE-derived CNDC (R(2) = 0.76) and both CNDCs could accurately discriminate wheat N status. Moreover, the NDRE could be inexpensively and rapidly measured using the active sensor. The relationship between NDRE-derived CNDC and grain yield was also analysed to facilitate in-season N management, and the R(2) value reached 0.79 and 0.87 at jointing and booting stages, respectively. The NDRE-based CNDC can be used to effectively diagnose wheat N status and as an alternative approach for non-destructive determination of crop N levels.
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spelling pubmed-71464482020-04-15 Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat Jiang, Jie Wang, Cuicun Wang, Yu Cao, Qiang Tian, Yongchao Zhu, Yan Cao, Weixing Liu, Xiaojun Sensors (Basel) Article Critical nitrogen (N) dilution curves (CNDCs) have been developed to describe the dilution dynamic of N and to diagnose N status in plants. In this study, to develop a convenient alternative CNDC determination method, four field experiments involving different N rates (0–360 kg N ha(-1)) and six wheat varieties were performed at different eco-sites from 2014 to 2019. The normalised difference red-edge (NDRE) index extracted from the RapidSCAN CS-45 (Holland Scientific Inc., Lincoln, NE, USA) sensor was used as a driving factor instead of plant dry matter (PDM) to establish a new alternative winter wheat CNDC. The newly developed CNDC was described by the equation Nc = 0.90NDRE(−0.88), when NDRE values were ≤ 0.19 and constant Nc = 3.81%, which was independent of the NDRE values. Compared to PDM-derived CNDC (R(2) = 0.73) developed with the same dataset, a comparable precision was obtained using NDRE-derived CNDC (R(2) = 0.76) and both CNDCs could accurately discriminate wheat N status. Moreover, the NDRE could be inexpensively and rapidly measured using the active sensor. The relationship between NDRE-derived CNDC and grain yield was also analysed to facilitate in-season N management, and the R(2) value reached 0.79 and 0.87 at jointing and booting stages, respectively. The NDRE-based CNDC can be used to effectively diagnose wheat N status and as an alternative approach for non-destructive determination of crop N levels. MDPI 2020-03-12 /pmc/articles/PMC7146448/ /pubmed/32178244 http://dx.doi.org/10.3390/s20061577 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Jie
Wang, Cuicun
Wang, Yu
Cao, Qiang
Tian, Yongchao
Zhu, Yan
Cao, Weixing
Liu, Xiaojun
Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat
title Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat
title_full Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat
title_fullStr Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat
title_full_unstemmed Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat
title_short Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat
title_sort using an active sensor to develop new critical nitrogen dilution curve for winter wheat
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7146448/
https://www.ncbi.nlm.nih.gov/pubmed/32178244
http://dx.doi.org/10.3390/s20061577
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