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Use of consumer-grade cameras to assess wheat N status and grain yield
Wheat Grain Yield (GY) and quality are particularly susceptible to nitrogen (N) fertilizer management. However, in rain-fed Mediterranean environments, crop N requirements might be variable due to the effects of water availability on crop growth. Therefore, in-season crop N status assessment is need...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6377115/ https://www.ncbi.nlm.nih.gov/pubmed/30768611 http://dx.doi.org/10.1371/journal.pone.0211889 |
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author | Fernández, Enric Gorchs, Gil Serrano, Lydia |
author_facet | Fernández, Enric Gorchs, Gil Serrano, Lydia |
author_sort | Fernández, Enric |
collection | PubMed |
description | Wheat Grain Yield (GY) and quality are particularly susceptible to nitrogen (N) fertilizer management. However, in rain-fed Mediterranean environments, crop N requirements might be variable due to the effects of water availability on crop growth. Therefore, in-season crop N status assessment is needed in order to apply N fertilizer in a cost-effective way while reducing environmental impacts. Remote sensing techniques might be useful at assessing in-season crop N status. In this study, we evaluated the capacity of vegetation indices formulated using blue (B), green (G), red (R) and near-infrared (NIR) bands obtained with a consumer-grade camera to assess wheat N status. Chlorophyll Content Index (CCI) and fractional intercepted PAR (fIPAR) were measured at three phenological stages and GY and biomass were determined at harvest. Indices formulated using RG bands and the normalized difference vegetation index (NDVI) were significantly correlated with both CCI and fIPAR at the different phenological stage (0.71 < r < 0.81, P < 0.01). Moreover, indices formulated using RG bands were capable at differentiating unfertilized and fertilized plots. In addition, RGB indices and NDVI were found to be related to both crop biomass and GY at harvest, particularly when data were obtained at initial grain filling stage (r > 0.80, P < 0.01). Finally, RGB indices and NDVI obtained with a consumer-grade camera showed comparable capacity at assessing chlorophyll content and predicting both crop biomass and GY at harvest than those obtained with a spectroradiometer. This study highlights the potential of standard and modified consumer-grade cameras at assessing canopy traits related to crop N status and GY in wheat under Mediterranean conditions. |
format | Online Article Text |
id | pubmed-6377115 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-63771152019-03-01 Use of consumer-grade cameras to assess wheat N status and grain yield Fernández, Enric Gorchs, Gil Serrano, Lydia PLoS One Research Article Wheat Grain Yield (GY) and quality are particularly susceptible to nitrogen (N) fertilizer management. However, in rain-fed Mediterranean environments, crop N requirements might be variable due to the effects of water availability on crop growth. Therefore, in-season crop N status assessment is needed in order to apply N fertilizer in a cost-effective way while reducing environmental impacts. Remote sensing techniques might be useful at assessing in-season crop N status. In this study, we evaluated the capacity of vegetation indices formulated using blue (B), green (G), red (R) and near-infrared (NIR) bands obtained with a consumer-grade camera to assess wheat N status. Chlorophyll Content Index (CCI) and fractional intercepted PAR (fIPAR) were measured at three phenological stages and GY and biomass were determined at harvest. Indices formulated using RG bands and the normalized difference vegetation index (NDVI) were significantly correlated with both CCI and fIPAR at the different phenological stage (0.71 < r < 0.81, P < 0.01). Moreover, indices formulated using RG bands were capable at differentiating unfertilized and fertilized plots. In addition, RGB indices and NDVI were found to be related to both crop biomass and GY at harvest, particularly when data were obtained at initial grain filling stage (r > 0.80, P < 0.01). Finally, RGB indices and NDVI obtained with a consumer-grade camera showed comparable capacity at assessing chlorophyll content and predicting both crop biomass and GY at harvest than those obtained with a spectroradiometer. This study highlights the potential of standard and modified consumer-grade cameras at assessing canopy traits related to crop N status and GY in wheat under Mediterranean conditions. Public Library of Science 2019-02-15 /pmc/articles/PMC6377115/ /pubmed/30768611 http://dx.doi.org/10.1371/journal.pone.0211889 Text en © 2019 Fernández et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Fernández, Enric Gorchs, Gil Serrano, Lydia Use of consumer-grade cameras to assess wheat N status and grain yield |
title | Use of consumer-grade cameras to assess wheat N status and grain yield |
title_full | Use of consumer-grade cameras to assess wheat N status and grain yield |
title_fullStr | Use of consumer-grade cameras to assess wheat N status and grain yield |
title_full_unstemmed | Use of consumer-grade cameras to assess wheat N status and grain yield |
title_short | Use of consumer-grade cameras to assess wheat N status and grain yield |
title_sort | use of consumer-grade cameras to assess wheat n status and grain yield |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6377115/ https://www.ncbi.nlm.nih.gov/pubmed/30768611 http://dx.doi.org/10.1371/journal.pone.0211889 |
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