NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL

Detalhes bibliográficos
Autor(a) principal: Sant’Ana, Edvaldo Vieira Pacheco
Data de Publicação: 2010
Outros Autores: Santos, Alberto Baêta dos, Silveira, Pedro Marques da
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/6320
Resumo: Nitrogen deficiency is one of the most limiting yield factors for dry bean. The objective of this study was to evaluate effects of topdressing nitrogen on chlorophyll and nitrogen concentrations in dry bean (BRS Horizonte cultivar) leaves and yield. The experiment was conducted at Embrapa Arroz e Feijão, in Santo Antônio de Goiás, Goiás State, Brazil, using a dystrophic dark red latosol. The experimental design was randomized blocks with four replications. The nitrogen rates used were 0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 120 kg ha-1, and 240 kg ha-1. Half of the N was applied at 10 days after emergence and half was applied at 17 days after emergence, using urea as fertilizer. Grain yield and chlorophyll concentration showed quadratic response to increasing N rates, whereas N concentration in leaves increased linearly. The chlorophyll concentration increased according to plant age, while the N concentration in leaves decreased. Chlorophyll and N concentrations in leaves were positively associated with grain yield. Chlorophyll meter readings estimated adequately chlorophyll concentrations in dry bean leaves and can be used to diagnose this nutrient in dry bean. KEY-WORDS: Phaseolus vulgaris; chlorophyll meter; nitrogen level; no-till system.
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spelling NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVELADUBAÇÃO NITROGENADA NA PRODUTIVIDADE, LEITURA SPAD E TEOR DE NITROGÊNIO EM FOLHAS DE FEIJOEIROPhaseolus vulgarischlorophyll meternitrogen levelno-till systemPhaseolus vulgarisclorofilômetroteor de nitrogênioplantio diretoNitrogen deficiency is one of the most limiting yield factors for dry bean. The objective of this study was to evaluate effects of topdressing nitrogen on chlorophyll and nitrogen concentrations in dry bean (BRS Horizonte cultivar) leaves and yield. The experiment was conducted at Embrapa Arroz e Feijão, in Santo Antônio de Goiás, Goiás State, Brazil, using a dystrophic dark red latosol. The experimental design was randomized blocks with four replications. The nitrogen rates used were 0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 120 kg ha-1, and 240 kg ha-1. Half of the N was applied at 10 days after emergence and half was applied at 17 days after emergence, using urea as fertilizer. Grain yield and chlorophyll concentration showed quadratic response to increasing N rates, whereas N concentration in leaves increased linearly. The chlorophyll concentration increased according to plant age, while the N concentration in leaves decreased. Chlorophyll and N concentrations in leaves were positively associated with grain yield. Chlorophyll meter readings estimated adequately chlorophyll concentrations in dry bean leaves and can be used to diagnose this nutrient in dry bean. KEY-WORDS: Phaseolus vulgaris; chlorophyll meter; nitrogen level; no-till system.A carência de nitrogênio é um dos fatores mais limitantes à produtividade de grãos de feijão. O objetivo deste estudo foi avaliar os efeitos de doses de nitrogênio aplicadas em cobertura sobre o teor relativo de clorofila (TRC - leitura SPAD), teor de nitrogênio nas folhas (TNF) e produtividade de grãos da cultivar BRS horizonte de feijoeiro. O experimento foi conduzido na Embrapa Arroz e Feijão, em Santo Antônio de Goiás (GO), em Latossolo Vermelho distrófico. Foi utilizado delineamento experimental de blocos ao acaso, com quatro repetições e cinco doses de nitrogênio (0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 120 kg ha-1 e 240 kg ha-1), aplicadas metade aos dez dias após a emergência (DAE) e a outra metade aos 17 DAE, na forma de ureia. A produtividade de grãos e o TRC apresentaram respostas quadráticas às doses de N e o TNF aumentou linearmente. O TRC aumentou com a idade das plantas, enquanto o TNF diminuiu, e ambos os teores foram associados à produtividade de grãos. As leituras efetuadas com clorofilômetro estimaram adequadamente o TRC e podem substituir a determinação do TNF, para diagnóstico do nível deste nutriente no feijoeiro. PALAVRAS-CHAVE: Phaseolus vulgaris; clorofilômetro; teor de nitrogênio; plantio direto.Escola de Agronomia - Universidade Federal de Goiás2010-12-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Experimentalapplication/savehttps://revistas.ufg.br/pat/article/view/6320Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 40, n. 4, Oct./Dec. 2010; 491-496Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 40, n. 4, out./dez. 2010; 491-496Pesquisa Agropecuária Tropical; v. 40, n. 4, out./dez. 2010; 491-4961983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/6320/8339Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessSant’Ana, Edvaldo Vieira PachecoSantos, Alberto Baêta dosSilveira, Pedro Marques da2020-07-09T18:03:11Zoai:ojs.revistas.ufg.br:article/6320Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:55:43.494195Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
ADUBAÇÃO NITROGENADA NA PRODUTIVIDADE, LEITURA SPAD E TEOR DE NITROGÊNIO EM FOLHAS DE FEIJOEIRO
title NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
spellingShingle NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
Sant’Ana, Edvaldo Vieira Pacheco
Phaseolus vulgaris
chlorophyll meter
nitrogen level
no-till system
Phaseolus vulgaris
clorofilômetro
teor de nitrogênio
plantio direto
title_short NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
title_full NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
title_fullStr NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
title_full_unstemmed NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
title_sort NITROGEN FERTILIZATION ON DRY BEAN LEAVES YIELD, SPAD READING, AND NITROGEN LEVEL
author Sant’Ana, Edvaldo Vieira Pacheco
author_facet Sant’Ana, Edvaldo Vieira Pacheco
Santos, Alberto Baêta dos
Silveira, Pedro Marques da
author_role author
author2 Santos, Alberto Baêta dos
Silveira, Pedro Marques da
author2_role author
author
dc.contributor.author.fl_str_mv Sant’Ana, Edvaldo Vieira Pacheco
Santos, Alberto Baêta dos
Silveira, Pedro Marques da
dc.subject.por.fl_str_mv Phaseolus vulgaris
chlorophyll meter
nitrogen level
no-till system
Phaseolus vulgaris
clorofilômetro
teor de nitrogênio
plantio direto
topic Phaseolus vulgaris
chlorophyll meter
nitrogen level
no-till system
Phaseolus vulgaris
clorofilômetro
teor de nitrogênio
plantio direto
description Nitrogen deficiency is one of the most limiting yield factors for dry bean. The objective of this study was to evaluate effects of topdressing nitrogen on chlorophyll and nitrogen concentrations in dry bean (BRS Horizonte cultivar) leaves and yield. The experiment was conducted at Embrapa Arroz e Feijão, in Santo Antônio de Goiás, Goiás State, Brazil, using a dystrophic dark red latosol. The experimental design was randomized blocks with four replications. The nitrogen rates used were 0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 120 kg ha-1, and 240 kg ha-1. Half of the N was applied at 10 days after emergence and half was applied at 17 days after emergence, using urea as fertilizer. Grain yield and chlorophyll concentration showed quadratic response to increasing N rates, whereas N concentration in leaves increased linearly. The chlorophyll concentration increased according to plant age, while the N concentration in leaves decreased. Chlorophyll and N concentrations in leaves were positively associated with grain yield. Chlorophyll meter readings estimated adequately chlorophyll concentrations in dry bean leaves and can be used to diagnose this nutrient in dry bean. KEY-WORDS: Phaseolus vulgaris; chlorophyll meter; nitrogen level; no-till system.
publishDate 2010
dc.date.none.fl_str_mv 2010-12-20
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa Experimental
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/6320
url https://revistas.ufg.br/pat/article/view/6320
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/6320/8339
dc.rights.driver.fl_str_mv Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/save
dc.publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
dc.source.none.fl_str_mv Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 40, n. 4, Oct./Dec. 2010; 491-496
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 40, n. 4, out./dez. 2010; 491-496
Pesquisa Agropecuária Tropical; v. 40, n. 4, out./dez. 2010; 491-496
1983-4063
reponame:Pesquisa Agropecuária Tropical (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Pesquisa Agropecuária Tropical (Online)
collection Pesquisa Agropecuária Tropical (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv aseleguini.pat@gmail.com||mgoes@agro.ufg.br
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