Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index
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Publication Date: | 2015 |
Other Authors: | , , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.4025/actascianimsci.v37i2.24854 http://hdl.handle.net/11449/213179 |
Summary: | The nutritional status of xaraes palisade grass with SPAD chlorophyll meter and the critical nitrogen sufficiency index (cNSI) in the dry and rainy seasons were assessed. The experiment was conducted in a completely randomized design with four treatments (50, 100, 200 and 400 kg N ha-1), three replicates and two seasons: dry and rainy. All variables had a high nonlinear relationship with their predictors (p < 0.001). Total nitrogen (TN) reached a plateau at doses 262.0 and 514.8 kg of N ha-1 and the concentration of TN in the plant was 1.88 and 1.93% respectively during the rainy and dry season. Relative chlorophyll content (RCC) reached a plateau at 46.05 and 53.65 SPAD units in the rainy and dry seasons, respectively. The production of dry matter (DM) showed maximum response to nitrogen fertilization at 209.5 and 229.1 kg N ha-1 during the rainy and dry season respectively. The nitrogen sufficiency index (NSI) reached the plateau at 0.85 and 0.99 in the rainy and dry season respectively. All variables showed high linear correlation (r = 0.71 to 0.99). The xaraés palisade grass's cNSI is 0.85 and the chlorophyll meter may be used as a nutritional N management tool for the grass. |
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Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency indexTeor relativo de clorofila na avaliação do status nutricional denitrogênio do capim-xaraés e determinação do índice de suficiência do nitrogêniocríticofertilization: Urochloa brizanthachlorophyll meter: nutritional status: SPAD.adubaçãoUrochloa brizanthaclorofilômetroestado nutricionalSPADThe nutritional status of xaraes palisade grass with SPAD chlorophyll meter and the critical nitrogen sufficiency index (cNSI) in the dry and rainy seasons were assessed. The experiment was conducted in a completely randomized design with four treatments (50, 100, 200 and 400 kg N ha-1), three replicates and two seasons: dry and rainy. All variables had a high nonlinear relationship with their predictors (p < 0.001). Total nitrogen (TN) reached a plateau at doses 262.0 and 514.8 kg of N ha-1 and the concentration of TN in the plant was 1.88 and 1.93% respectively during the rainy and dry season. Relative chlorophyll content (RCC) reached a plateau at 46.05 and 53.65 SPAD units in the rainy and dry seasons, respectively. The production of dry matter (DM) showed maximum response to nitrogen fertilization at 209.5 and 229.1 kg N ha-1 during the rainy and dry season respectively. The nitrogen sufficiency index (NSI) reached the plateau at 0.85 and 0.99 in the rainy and dry season respectively. All variables showed high linear correlation (r = 0.71 to 0.99). The xaraés palisade grass's cNSI is 0.85 and the chlorophyll meter may be used as a nutritional N management tool for the grass.Objetivou-se avaliar o estado nutricional do capim-xaraés utilizando o clorofilômetro SPAD e estabelecer o índice de suficiência crítico (ISNc) nas épocas das águas e seca. O experimento foi conduzido em um delineamento inteiramente casualizado com quatro tratamentos (50, 100, 200 e 400 kg N ha-1), três repetições, duas épocas: águas e seca. Todas as variáveis apresentaram alta relação não linear com seus preditores (p < 0,001). O nitrogênio total (NT) alcançou o platô na dose de 262,0 e 514,8 kg de N ha-1 e a concentração de NT na planta foi 1,88 e 1,93% no período das águas e seco, respectivamente. O teor relativo de clorofila (TRC) atingiu o platô a 46,05 e 53,65 unidades SPAD no período das águas e seca, respectivamente. A produção de matéria seca (MS) apresentou máxima resposta a adubação nitrogenada na dose de 209,5 e 229,1 kg N ha-1 na época das águas e seca, respectivamente. O índice de suficiência de nitrogênio (ISN) atingiu o platô em 0,85 e 0,99 na época das águas e secas respectivamente. Todas as variáveis apresentaram alta correlação linear (r= 0,71 a 0,99). O ISNc do capim-xaraés é 0,85 e o clorofilômetro pode ser utilizado como ferramenta de manejo nutricional de N para essa gramínea.Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e VeterináriasInstituto Federal do AmazonasUniversidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e VeterináriasEditora da Universidade Estadual de Maringá - EDUEMUniversidade Estadual Paulista (Unesp)Instituto Federal do AmazonasCosta, João Paulo Ramos [UNESP]Caputti, Gregory De Paula [UNESP]Galzerano, LeandroSilva, Wilton Ladeira Da [UNESP]Ruggieri, Ana Claudia [UNESP]Malheiros, Euclides Braga [UNESP]2021-07-14T10:51:15Z2021-07-14T10:51:15Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article109-114application/pdfhttp://dx.doi.org/10.4025/actascianimsci.v37i2.24854Acta Scientiarum. Animal Sciences. Editora da Universidade Estadual de Maringá - EDUEM, v. 37, n. 2, p. 109-114, 2015.1807-8672http://hdl.handle.net/11449/21317910.4025/actascianimsci.v37i2.24854S1807-86722015000200109S1807-86722015000200109.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Scientiarum. Animal Sciencesinfo:eu-repo/semantics/openAccess2024-01-15T06:25:46Zoai:repositorio.unesp.br:11449/213179Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-15T06:25:46Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index Teor relativo de clorofila na avaliação do status nutricional denitrogênio do capim-xaraés e determinação do índice de suficiência do nitrogêniocrítico |
title |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index |
spellingShingle |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index Costa, João Paulo Ramos [UNESP] fertilization: Urochloa brizantha chlorophyll meter: nutritional status: SPAD. adubação Urochloa brizantha clorofilômetro estado nutricional SPAD |
title_short |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index |
title_full |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index |
title_fullStr |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index |
title_full_unstemmed |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index |
title_sort |
Relative chlorophyll contents in the evaluation of the nutritional status of nitrogen from xaraes palisade grass and determination of critical nitrogen sufficiency index |
author |
Costa, João Paulo Ramos [UNESP] |
author_facet |
Costa, João Paulo Ramos [UNESP] Caputti, Gregory De Paula [UNESP] Galzerano, Leandro Silva, Wilton Ladeira Da [UNESP] Ruggieri, Ana Claudia [UNESP] Malheiros, Euclides Braga [UNESP] |
author_role |
author |
author2 |
Caputti, Gregory De Paula [UNESP] Galzerano, Leandro Silva, Wilton Ladeira Da [UNESP] Ruggieri, Ana Claudia [UNESP] Malheiros, Euclides Braga [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Instituto Federal do Amazonas |
dc.contributor.author.fl_str_mv |
Costa, João Paulo Ramos [UNESP] Caputti, Gregory De Paula [UNESP] Galzerano, Leandro Silva, Wilton Ladeira Da [UNESP] Ruggieri, Ana Claudia [UNESP] Malheiros, Euclides Braga [UNESP] |
dc.subject.por.fl_str_mv |
fertilization: Urochloa brizantha chlorophyll meter: nutritional status: SPAD. adubação Urochloa brizantha clorofilômetro estado nutricional SPAD |
topic |
fertilization: Urochloa brizantha chlorophyll meter: nutritional status: SPAD. adubação Urochloa brizantha clorofilômetro estado nutricional SPAD |
description |
The nutritional status of xaraes palisade grass with SPAD chlorophyll meter and the critical nitrogen sufficiency index (cNSI) in the dry and rainy seasons were assessed. The experiment was conducted in a completely randomized design with four treatments (50, 100, 200 and 400 kg N ha-1), three replicates and two seasons: dry and rainy. All variables had a high nonlinear relationship with their predictors (p < 0.001). Total nitrogen (TN) reached a plateau at doses 262.0 and 514.8 kg of N ha-1 and the concentration of TN in the plant was 1.88 and 1.93% respectively during the rainy and dry season. Relative chlorophyll content (RCC) reached a plateau at 46.05 and 53.65 SPAD units in the rainy and dry seasons, respectively. The production of dry matter (DM) showed maximum response to nitrogen fertilization at 209.5 and 229.1 kg N ha-1 during the rainy and dry season respectively. The nitrogen sufficiency index (NSI) reached the plateau at 0.85 and 0.99 in the rainy and dry season respectively. All variables showed high linear correlation (r = 0.71 to 0.99). The xaraés palisade grass's cNSI is 0.85 and the chlorophyll meter may be used as a nutritional N management tool for the grass. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 2021-07-14T10:51:15Z 2021-07-14T10:51:15Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4025/actascianimsci.v37i2.24854 Acta Scientiarum. Animal Sciences. Editora da Universidade Estadual de Maringá - EDUEM, v. 37, n. 2, p. 109-114, 2015. 1807-8672 http://hdl.handle.net/11449/213179 10.4025/actascianimsci.v37i2.24854 S1807-86722015000200109 S1807-86722015000200109.pdf |
url |
http://dx.doi.org/10.4025/actascianimsci.v37i2.24854 http://hdl.handle.net/11449/213179 |
identifier_str_mv |
Acta Scientiarum. Animal Sciences. Editora da Universidade Estadual de Maringá - EDUEM, v. 37, n. 2, p. 109-114, 2015. 1807-8672 10.4025/actascianimsci.v37i2.24854 S1807-86722015000200109 S1807-86722015000200109.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Scientiarum. Animal Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
109-114 application/pdf |
dc.publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá - EDUEM |
publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá - EDUEM |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965629585817600 |