Vegetation index in cotton under rates of nitrogen and growth regulator

Detalhes bibliográficos
Autor(a) principal: Motomiya, Anamari Viegas de Araujo
Data de Publicação: 2014
Outros Autores: Valente, Igor Moraes Queiroz, Molin, Jose Paulo, Motomiya, Wagner Rogério, Biscaro, Guilherme Augusto, Jordan, Rodrigo Aparecido
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13025
Resumo: The increasing cost of nitrogen fertilizer, combined with high losses, demand management practices that result in high efficiency of nitrogen use by crops, considering the reduction of risks to the environment. Our objectives were to evaluate the index of normalized difference vegetation – NDVI – the variation of nitrogen and growth regulator and its relationship to foliar N and chlorophyll in cotton crops. The experiment was conducted on Distroferric Latosol (Oxisol), in Dourados, MS. We adopted a randomized block design in split plot with four replications. The main treatments consisted of doses of growth regulator (0, 0.30 and 0.60 L ha-1), the secondary treatments consisted of five N rates (0, 30, 70, 110 and 150 kg ha-1). The NDVI obtained by an active optical sensor was influenced significantly by the N and the growth regulator application, but on most of the readings the interactions between these two factors were not significant. NDVI values can be used on the diagnostic of N nutritional deficiencies for cotton.
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spelling Vegetation index in cotton under rates of nitrogen and growth regulatorÍndice de vegetação no algodoeiro sob diferentes doses de nitrogênio e regulador de crescimentoPrecision agricultureFertilization managementRemote sensing.Agricultura de precisãoManejo da adubaçãoSensoriamento remoto.5.01.03.00-8 FitotecniaThe increasing cost of nitrogen fertilizer, combined with high losses, demand management practices that result in high efficiency of nitrogen use by crops, considering the reduction of risks to the environment. Our objectives were to evaluate the index of normalized difference vegetation – NDVI – the variation of nitrogen and growth regulator and its relationship to foliar N and chlorophyll in cotton crops. The experiment was conducted on Distroferric Latosol (Oxisol), in Dourados, MS. We adopted a randomized block design in split plot with four replications. The main treatments consisted of doses of growth regulator (0, 0.30 and 0.60 L ha-1), the secondary treatments consisted of five N rates (0, 30, 70, 110 and 150 kg ha-1). The NDVI obtained by an active optical sensor was influenced significantly by the N and the growth regulator application, but on most of the readings the interactions between these two factors were not significant. NDVI values can be used on the diagnostic of N nutritional deficiencies for cotton.O custo crescente dos fertilizantes nitrogenados, aliado às elevadas perdas, aumenta a necessidade de práticas de manejo que resultem em alta eficiência de utilização do nitrogênio pelas culturas, considerando a redução de riscos ao ambiente. Nessa premissa, objetivou-se avaliar a resposta do índice de vegetação da diferença normalizada (NDVI) à variação de doses de nitrogênio e regulador de crescimento e sua relação com os teores foliares de N e de clorofila na cultura do algodoeiro. O experimento foi conduzido em um Latossolo Vermelho distroférrico, em Dourados, MS. Adotou-se um delineamento em blocos aleatorizados, no esquema de parcelas subdivididas, com 4 repetições. Os tratamentos principais consistiram de doses de regulador de crescimento (0, 0,30 e 0,60 L ha-1); os tratamentos secundários consistiram de 5 doses de N (0, 30, 70, 110 e 150 kg ha-1). O NDVI obtido através de sensor óptico ativo foi influenciado significativamente, tanto pelas doses de N quanto pela aplicação do regulador de crescimento, porém, na maior parte das leituras não houve interação significativa entre estes dois fatores. Os valores do NDVI podem ser usados para diagnosticar deficiências nutricionais relativas ao N na cultura. UEL2014-02-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1302510.5433/1679-0359.2014v35n1p169Semina: Ciências Agrárias; Vol. 35 No. 1 (2014); 169-178Semina: Ciências Agrárias; v. 35 n. 1 (2014); 169-1781679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13025/pdf_221Motomiya, Anamari Viegas de AraujoValente, Igor Moraes QueirozMolin, Jose PauloMotomiya, Wagner RogérioBiscaro, Guilherme AugustoJordan, Rodrigo Aparecidoinfo:eu-repo/semantics/openAccess2015-11-19T18:36:01Zoai:ojs.pkp.sfu.ca:article/13025Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:36:01Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Vegetation index in cotton under rates of nitrogen and growth regulator
Índice de vegetação no algodoeiro sob diferentes doses de nitrogênio e regulador de crescimento
title Vegetation index in cotton under rates of nitrogen and growth regulator
spellingShingle Vegetation index in cotton under rates of nitrogen and growth regulator
Motomiya, Anamari Viegas de Araujo
Precision agriculture
Fertilization management
Remote sensing.
Agricultura de precisão
Manejo da adubação
Sensoriamento remoto.
5.01.03.00-8 Fitotecnia
title_short Vegetation index in cotton under rates of nitrogen and growth regulator
title_full Vegetation index in cotton under rates of nitrogen and growth regulator
title_fullStr Vegetation index in cotton under rates of nitrogen and growth regulator
title_full_unstemmed Vegetation index in cotton under rates of nitrogen and growth regulator
title_sort Vegetation index in cotton under rates of nitrogen and growth regulator
author Motomiya, Anamari Viegas de Araujo
author_facet Motomiya, Anamari Viegas de Araujo
Valente, Igor Moraes Queiroz
Molin, Jose Paulo
Motomiya, Wagner Rogério
Biscaro, Guilherme Augusto
Jordan, Rodrigo Aparecido
author_role author
author2 Valente, Igor Moraes Queiroz
Molin, Jose Paulo
Motomiya, Wagner Rogério
Biscaro, Guilherme Augusto
Jordan, Rodrigo Aparecido
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Motomiya, Anamari Viegas de Araujo
Valente, Igor Moraes Queiroz
Molin, Jose Paulo
Motomiya, Wagner Rogério
Biscaro, Guilherme Augusto
Jordan, Rodrigo Aparecido
dc.subject.por.fl_str_mv Precision agriculture
Fertilization management
Remote sensing.
Agricultura de precisão
Manejo da adubação
Sensoriamento remoto.
5.01.03.00-8 Fitotecnia
topic Precision agriculture
Fertilization management
Remote sensing.
Agricultura de precisão
Manejo da adubação
Sensoriamento remoto.
5.01.03.00-8 Fitotecnia
description The increasing cost of nitrogen fertilizer, combined with high losses, demand management practices that result in high efficiency of nitrogen use by crops, considering the reduction of risks to the environment. Our objectives were to evaluate the index of normalized difference vegetation – NDVI – the variation of nitrogen and growth regulator and its relationship to foliar N and chlorophyll in cotton crops. The experiment was conducted on Distroferric Latosol (Oxisol), in Dourados, MS. We adopted a randomized block design in split plot with four replications. The main treatments consisted of doses of growth regulator (0, 0.30 and 0.60 L ha-1), the secondary treatments consisted of five N rates (0, 30, 70, 110 and 150 kg ha-1). The NDVI obtained by an active optical sensor was influenced significantly by the N and the growth regulator application, but on most of the readings the interactions between these two factors were not significant. NDVI values can be used on the diagnostic of N nutritional deficiencies for cotton.
publishDate 2014
dc.date.none.fl_str_mv 2014-02-26
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa Empírica de Campo
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13025
10.5433/1679-0359.2014v35n1p169
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13025
identifier_str_mv 10.5433/1679-0359.2014v35n1p169
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/13025/pdf_221
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 UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 35 No. 1 (2014); 169-178
Semina: Ciências Agrárias; v. 35 n. 1 (2014); 169-178
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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