Absorption, metabolism and diagnosis of the state of nitrogen in potato plants.
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista de Ciências Agrárias (Belém. Online) |
Texto Completo: | https://ajaes.ufra.edu.br/index.php/ajaes/article/view/745 |
Resumo: | Summary - This revision aims to address the metabolic regulations related to the absorption and assimilation of nitrogen ( N ) as well as mention the plant parameters ( physiological or agronomic rates ) that can be used as indicators of the state of N in potato to predict the need for nitrogen topdressing . Also mentioned was the correct management of fertilizer to obtain the optimum or near optimum productivity with the goal of generating sustainable agriculture . In precision farming , diagnosis of the state of N needs to be done mainly in real time. The high consumption and inefficient use of nitrogen fertilizers continues to be problem in potato . ON is absorbed as NO3 - and NH4 + and incorporated into amino acids in roots and shoots. The NO3- is assimilated by two enzymes: nitrate reductase (NR) and nitrite reductase ( NiR ), which catalyze the reduction of NO3- to NO2 - and NH4 + to NO2- , respectively. After reduction, N metabolism has two paths , one for glutamine synthetase (GS) and glutamate synthase to another ( GOGAT ), using as source of N glutamine . Optimization of N management for each cultivar is important to maximize the productivity and quality of tubers . The N status of potato can be estimated through the analysis of N in dry matter . Alternatively , you can use rapid procedures and the content of NO3 - in the petiole , chlorophyll meter ( SPAD index and Dualex ) , color table and physiological indices for assessing the state of N in potato plants . |
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Absorption, metabolism and diagnosis of the state of nitrogen in potato plants.Absorção, metabolismo e diagnóstico do estado de nitrogênio nas plantas de batata.Summary - This revision aims to address the metabolic regulations related to the absorption and assimilation of nitrogen ( N ) as well as mention the plant parameters ( physiological or agronomic rates ) that can be used as indicators of the state of N in potato to predict the need for nitrogen topdressing . Also mentioned was the correct management of fertilizer to obtain the optimum or near optimum productivity with the goal of generating sustainable agriculture . In precision farming , diagnosis of the state of N needs to be done mainly in real time. The high consumption and inefficient use of nitrogen fertilizers continues to be problem in potato . ON is absorbed as NO3 - and NH4 + and incorporated into amino acids in roots and shoots. The NO3- is assimilated by two enzymes: nitrate reductase (NR) and nitrite reductase ( NiR ), which catalyze the reduction of NO3- to NO2 - and NH4 + to NO2- , respectively. After reduction, N metabolism has two paths , one for glutamine synthetase (GS) and glutamate synthase to another ( GOGAT ), using as source of N glutamine . Optimization of N management for each cultivar is important to maximize the productivity and quality of tubers . The N status of potato can be estimated through the analysis of N in dry matter . Alternatively , you can use rapid procedures and the content of NO3 - in the petiole , chlorophyll meter ( SPAD index and Dualex ) , color table and physiological indices for assessing the state of N in potato plants .Resumo - Esta revisão visa abordar as regulações metabólicas relacionadas à absorção e assimilação do nitrogênio (N) bem como mencionar parâmetros da planta (índices fisiológicos ou agronômicos) que possam ser utilizados como indicadores do estado de N na cultura da batata para predizer a necessidade de adubação nitrogenada em cobertura. Também foi mencionado o correto manejo dos fertilizantes para obtenção da produtividade ótima ou próxima da ótima com objetivo de gerar uma agricultura sustentável. Na agricultura de precisão, diagnóstico do estado de N precisa ser feita principalmente em tempo real. O elevado consumo e ineficiente uso dos fertilizantes nitrogenados continua ser problema na cultura da batata. O N é absorvido na forma de NO3- e NH4+ e incorporado em aminoácidos nas raízes e parte aérea. O NO3- é assimilado por duas enzimas: a nitrato redutase (NR) e nitrito redutase (NiR), que catalisam a redução do NO3- a NO2- e NO2- para NH4+, respectivamente. Após a redução, o metabolismo do N contém dois caminhos, um para a glutamina sintetase (GS) e outro para a glutamato sintase (GOGAT), utilizando como fonte de N a glutamina. A otimização do manejo do N para cada cultivar é importante para maximizar a produtividade e qualidade de tubérculos. O status de N das plantas de batata pode ser estimado por meio da análise de N na matéria seca. Em alternativa, pode-se utilizar procedimentos rápidos como o teor de NO3- no pecíolo, clorofilômetro (índice SPAD e Dualex), tabela de cor e índices fisiológicos para avaliação do estado de N nas plantas de batata. Universidade Federal Rural da Amazônia/UFRA2013-08-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/745Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 56 No 3 (2013): RCA; 185-195Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 56 n. 3 (2013): RCA; 185-1952177-87601517-591Xreponame:Revista de Ciências Agrárias (Belém. Online)instname:Universidade Federal Rural da Amazônia (UFRA)instacron:UFRAporhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/745/378Braun, HederCoelho, Fabrício SilvaSilva, Marcelo Cleón de CastroFontes, Paulo Cezar RezendeCecon, Paulo RobertoBusato, Camiloinfo:eu-repo/semantics/openAccess2017-07-18T18:49:47Zoai:ojs.www.periodicos.ufra.edu.br:article/745Revistahttps://ajaes.ufra.edu.br/index.php/ajaes/PUBhttps://ajaes.ufra.edu.br/index.php/ajaes/oaiallan.lobato@ufra.edu.br || ajaes.suporte@gmail.com2177-87601517-591Xopendoar:2017-07-18T18:49:47Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA)false |
dc.title.none.fl_str_mv |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. Absorção, metabolismo e diagnóstico do estado de nitrogênio nas plantas de batata. |
title |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. |
spellingShingle |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. Braun, Heder |
title_short |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. |
title_full |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. |
title_fullStr |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. |
title_full_unstemmed |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. |
title_sort |
Absorption, metabolism and diagnosis of the state of nitrogen in potato plants. |
author |
Braun, Heder |
author_facet |
Braun, Heder Coelho, Fabrício Silva Silva, Marcelo Cleón de Castro Fontes, Paulo Cezar Rezende Cecon, Paulo Roberto Busato, Camilo |
author_role |
author |
author2 |
Coelho, Fabrício Silva Silva, Marcelo Cleón de Castro Fontes, Paulo Cezar Rezende Cecon, Paulo Roberto Busato, Camilo |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Braun, Heder Coelho, Fabrício Silva Silva, Marcelo Cleón de Castro Fontes, Paulo Cezar Rezende Cecon, Paulo Roberto Busato, Camilo |
description |
Summary - This revision aims to address the metabolic regulations related to the absorption and assimilation of nitrogen ( N ) as well as mention the plant parameters ( physiological or agronomic rates ) that can be used as indicators of the state of N in potato to predict the need for nitrogen topdressing . Also mentioned was the correct management of fertilizer to obtain the optimum or near optimum productivity with the goal of generating sustainable agriculture . In precision farming , diagnosis of the state of N needs to be done mainly in real time. The high consumption and inefficient use of nitrogen fertilizers continues to be problem in potato . ON is absorbed as NO3 - and NH4 + and incorporated into amino acids in roots and shoots. The NO3- is assimilated by two enzymes: nitrate reductase (NR) and nitrite reductase ( NiR ), which catalyze the reduction of NO3- to NO2 - and NH4 + to NO2- , respectively. After reduction, N metabolism has two paths , one for glutamine synthetase (GS) and glutamate synthase to another ( GOGAT ), using as source of N glutamine . Optimization of N management for each cultivar is important to maximize the productivity and quality of tubers . The N status of potato can be estimated through the analysis of N in dry matter . Alternatively , you can use rapid procedures and the content of NO3 - in the petiole , chlorophyll meter ( SPAD index and Dualex ) , color table and physiological indices for assessing the state of N in potato plants . |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-08-22 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/745 |
url |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/745 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/745/378 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
dc.source.none.fl_str_mv |
Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 56 No 3 (2013): RCA; 185-195 Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 56 n. 3 (2013): RCA; 185-195 2177-8760 1517-591X reponame:Revista de Ciências Agrárias (Belém. Online) instname:Universidade Federal Rural da Amazônia (UFRA) instacron:UFRA |
instname_str |
Universidade Federal Rural da Amazônia (UFRA) |
instacron_str |
UFRA |
institution |
UFRA |
reponame_str |
Revista de Ciências Agrárias (Belém. Online) |
collection |
Revista de Ciências Agrárias (Belém. Online) |
repository.name.fl_str_mv |
Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA) |
repository.mail.fl_str_mv |
allan.lobato@ufra.edu.br || ajaes.suporte@gmail.com |
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1797231627438391296 |