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Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer
Humic acid (HA), not only promote the growth of crop roots, they can be combined with nitrogen (N) to increase fertilizer use efficiency and yield. However, the effects of HA urea fertilizer (HA-N) on root growth and yield of sweet potato has not been widely investigated. Xushu 28 was used as the ex...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5734739/ https://www.ncbi.nlm.nih.gov/pubmed/29253886 http://dx.doi.org/10.1371/journal.pone.0189715 |
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author | Chen, Xiaoguang Kou, Meng Tang, Zhonghou Zhang, Aijun Li, Hongmin Wei, Meng |
author_facet | Chen, Xiaoguang Kou, Meng Tang, Zhonghou Zhang, Aijun Li, Hongmin Wei, Meng |
author_sort | Chen, Xiaoguang |
collection | PubMed |
description | Humic acid (HA), not only promote the growth of crop roots, they can be combined with nitrogen (N) to increase fertilizer use efficiency and yield. However, the effects of HA urea fertilizer (HA-N) on root growth and yield of sweet potato has not been widely investigated. Xushu 28 was used as the experimental crop to investigate the effects of HA-N on root morphology, active oxygen metabolism and yield under field conditions. Results showed that nitrogen application alone was not beneficial for root growth and storage root formation during the early growth stage. HA-N significantly increased the dry weight of the root system, promoted differentiation from adventitious root to storage root, and increased the overall root activity, total root length, root diameter, root surface area, as well as root volume. HA-N thus increased the activity of superoxide dismutase (SOD), peroxidase (POD), and Catalase (CAT) as well as increasing the soluble protein content of roots and decreasing the malondialdehyde (MDA) content. HA-N significantly increased both the number of storage roots per plant increased by 14.01%, and the average fresh weight per storage root increased by 13.7%, while the yield was also obviously increased by 29.56%. In this study, HA-N increased yield through a synergistic increase of biological yield and harvest index. |
format | Online Article Text |
id | pubmed-5734739 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-57347392017-12-22 Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer Chen, Xiaoguang Kou, Meng Tang, Zhonghou Zhang, Aijun Li, Hongmin Wei, Meng PLoS One Research Article Humic acid (HA), not only promote the growth of crop roots, they can be combined with nitrogen (N) to increase fertilizer use efficiency and yield. However, the effects of HA urea fertilizer (HA-N) on root growth and yield of sweet potato has not been widely investigated. Xushu 28 was used as the experimental crop to investigate the effects of HA-N on root morphology, active oxygen metabolism and yield under field conditions. Results showed that nitrogen application alone was not beneficial for root growth and storage root formation during the early growth stage. HA-N significantly increased the dry weight of the root system, promoted differentiation from adventitious root to storage root, and increased the overall root activity, total root length, root diameter, root surface area, as well as root volume. HA-N thus increased the activity of superoxide dismutase (SOD), peroxidase (POD), and Catalase (CAT) as well as increasing the soluble protein content of roots and decreasing the malondialdehyde (MDA) content. HA-N significantly increased both the number of storage roots per plant increased by 14.01%, and the average fresh weight per storage root increased by 13.7%, while the yield was also obviously increased by 29.56%. In this study, HA-N increased yield through a synergistic increase of biological yield and harvest index. Public Library of Science 2017-12-18 /pmc/articles/PMC5734739/ /pubmed/29253886 http://dx.doi.org/10.1371/journal.pone.0189715 Text en © 2017 Chen 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 Chen, Xiaoguang Kou, Meng Tang, Zhonghou Zhang, Aijun Li, Hongmin Wei, Meng Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer |
title | Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer |
title_full | Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer |
title_fullStr | Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer |
title_full_unstemmed | Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer |
title_short | Responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer |
title_sort | responses of root physiological characteristics and yield of sweet potato to humic acid urea fertilizer |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5734739/ https://www.ncbi.nlm.nih.gov/pubmed/29253886 http://dx.doi.org/10.1371/journal.pone.0189715 |
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