Growth and gas exchange in millet under different doses and sources of nitrogen

Detalhes bibliográficos
Autor(a) principal: Costa, João Guilherme Justino da
Data de Publicação: 2020
Outros Autores: Gomes, Silas Primola, Sousa, Geocleber Gomes de, Conrado, Jefte Arnon de Almeida, Albuquerque, Andrey Lohan Barbosa, Pimentel, Patrícia Guimarães, Rocha, Amanda Cardoso, Sousa, Henderson Castelo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/4988
Resumo: The objective was to evaluate growth, dry matter production (DMP) and gas exchange of millet, according to different doses and sources of nitrogen. The design was completely randomized in a 5 x 2 factorial scheme, with five nitrogen doses (40; 60; 80; 100 and 120 kg ha-¹ of N) and two sources of N (urea and ammonium sulfate). The evaluations were carried out at 60 and 85 days after seeding (DAS). The variables leaf area (AF), plant height (AP) and DMP at 60 and 85 DAS and stem diameter (SD at 85 DAS) were influenced by the interaction of N sources and doses. The SD at 60 DAS was influenced only doses. Stomatal conductance (gs) and chlorophyll content were influenced by the interaction between sources and doses, while the rate of CO2 assimilation (A) and transpiration (E) were influenced only by the dose. The nitrogen fertilization, in both sources, influenced the growth and the DMP of the millet, in the different periods of development (60 and 85 DAS). Urea showed a better response to gas exchange than ammonium sulfate, except for stomatal conductance. Thus, up to 60 days after seeding, for grazing purpose, between 60 and 80 kg ha-1 of N is recommended, using urea as the source. For the silage production, from 60 to 85 days after seeding, fertilization between 80 and 100 kg ha-1 of N in the form of urea is recommended.
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spelling Growth and gas exchange in millet under different doses and sources of nitrogenCrecimiento e intercambio gaseoso de mijo fertilizado con diferentes dosis y fuentes de nitrógenoCrescimento e trocas gasosas em milheto sob diferentes doses e fontes de nitrogênioAdubaçãoForragemFotossíntesePennisetum glaucum L.FertilizaciónForrajeFotosíntesisPennisetum glaucum L.FertilizationForagePennisetum glaucum LPhotosynthesis.The objective was to evaluate growth, dry matter production (DMP) and gas exchange of millet, according to different doses and sources of nitrogen. The design was completely randomized in a 5 x 2 factorial scheme, with five nitrogen doses (40; 60; 80; 100 and 120 kg ha-¹ of N) and two sources of N (urea and ammonium sulfate). The evaluations were carried out at 60 and 85 days after seeding (DAS). The variables leaf area (AF), plant height (AP) and DMP at 60 and 85 DAS and stem diameter (SD at 85 DAS) were influenced by the interaction of N sources and doses. The SD at 60 DAS was influenced only doses. Stomatal conductance (gs) and chlorophyll content were influenced by the interaction between sources and doses, while the rate of CO2 assimilation (A) and transpiration (E) were influenced only by the dose. The nitrogen fertilization, in both sources, influenced the growth and the DMP of the millet, in the different periods of development (60 and 85 DAS). Urea showed a better response to gas exchange than ammonium sulfate, except for stomatal conductance. Thus, up to 60 days after seeding, for grazing purpose, between 60 and 80 kg ha-1 of N is recommended, using urea as the source. For the silage production, from 60 to 85 days after seeding, fertilization between 80 and 100 kg ha-1 of N in the form of urea is recommended.El objetivo fue evaluar el crecimiento, la producción de materia seca (PMS) y el intercambio de gases del mijo, dependiendo de las diferentes dosis y fuentes de nitrógeno. El diseño fue completamente al azar, con cinco dosis de nitrógeno (40; 60; 80; 100 y 120 kg ha-¹ de N) y dos fuentes de N (urea y sulfato de amonio). Las evaluaciones se llevaron a cabo a los 60 y 85 días después de la siembra (DDS). Las variables área foliar (AF), altura de la planta (AP) y PMS a 60 y 85 DDS y diámetro del tallo (DT a 85 DDS) fueron influenciadas por las fuentes y las dosis de N. La DT a 60 DDS fue influenciada solamente dosis. Conductancia estomática - (gs) y el contenido de clorofila fueron influenciados por las fuentes y las dosis, mientras que la tasa de asimilación de CO2 (A) y la transpiración (E) fueron influenciadas solo por la dosis. La fertilización nitrogenada, en ambas fuentes, influyó en el crecimiento y el PMS del mijo, en los diferentes períodos (60 y 85 DDS). La urea mostró una mejor respuesta al intercambio de gases en comparación con el sulfato de amonio, excepto por la gs. Por lo tanto, hasta 60 DDS, con fines de pastoreo, se recomiendan entre 60 y 80 kg ha-1 de N, utilizando urea como fuente. Para la producción de ensilaje, de 60 a 85 DDS, se recomienda la fertilización entre 80 y 100 kg ha-1 de N en forma de urea.Objetivou-se avaliar o crescimento, a produção de matéria seca (PMS) e as trocas gasosas do milheto, em função de diferentes doses e fontes de nitrogênio. O delineamento foi inteiramente casualizado em esquema fatorial 5 x 2, sendo cinco doses de nitrogênio (40; 60; 80; 100 e 120 kg ha-¹ de N) e duas fontes de N (ureia e sulfato de amônio). As avaliações foram realizadas aos 60 e 85 dias após a semeadura (DAS). As variáveis área foliar (AF), altura de plantas (AP) e PMS aos 60 e 85 DAS e o diâmetro do colmo (DC aos 85 DAS) foram influenciadas pela interação fontes e doses de N. O DC aos 60 DAS sofreu influência somente das doses. A condutância estomática –(gs) e o teor de clorofila foram influenciados pela interação fontes e doses, enquanto que a taxa de assimilação de CO2 (A) e transpiração (E) foram influenciadas somente pela dose. A adubação nitrogenada, em ambas as fontes, influenciou o crescimento e a PMS do milheto, nos períodos distintos de desenvolvimento (60 e 85 DAS). A ureia mostrou melhor resposta para as trocas gasosas em relação ao sulfato de amônio, com exceção para a condutância estomática. Assim, até 60 dias após a semeadura, com a finalidade de pastejo, recomenda-se entre 60 e 80 kg ha-1 de N, usando como fonte a ureia. Para a produção de silagem, dos 60 aos 85 dias após a semeadura, recomenda-se adubação entre 80 e 100 kg ha-1 de N na forma de ureia.Research, Society and Development2020-06-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/498810.33448/rsd-v9i7.4988Research, Society and Development; Vol. 9 No. 7; e820974988Research, Society and Development; Vol. 9 Núm. 7; e820974988Research, Society and Development; v. 9 n. 7; e8209749882525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/4988/4245Copyright (c) 2020 João Guilherme Justino da Costa, Silas Primola Gomes, Geocleber Gomes de Sousa, Jefte Arnon de Almeida Conrado, Andrey Lohan Barbosa Albuquerque, Patrícia Guimarães Pimentel, Amanda Cardoso Rocha, Henderson Castelo Sousainfo:eu-repo/semantics/openAccessCosta, João Guilherme Justino daGomes, Silas PrimolaSousa, Geocleber Gomes deConrado, Jefte Arnon de AlmeidaAlbuquerque, Andrey Lohan BarbosaPimentel, Patrícia GuimarãesRocha, Amanda CardosoSousa, Henderson Castelo2020-08-20T18:05:03Zoai:ojs.pkp.sfu.ca:article/4988Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:28:39.773142Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Growth and gas exchange in millet under different doses and sources of nitrogen
Crecimiento e intercambio gaseoso de mijo fertilizado con diferentes dosis y fuentes de nitrógeno
Crescimento e trocas gasosas em milheto sob diferentes doses e fontes de nitrogênio
title Growth and gas exchange in millet under different doses and sources of nitrogen
spellingShingle Growth and gas exchange in millet under different doses and sources of nitrogen
Costa, João Guilherme Justino da
Adubação
Forragem
Fotossíntese
Pennisetum glaucum L.
Fertilización
Forraje
Fotosíntesis
Pennisetum glaucum L.
Fertilization
Forage
Pennisetum glaucum L
Photosynthesis.
title_short Growth and gas exchange in millet under different doses and sources of nitrogen
title_full Growth and gas exchange in millet under different doses and sources of nitrogen
title_fullStr Growth and gas exchange in millet under different doses and sources of nitrogen
title_full_unstemmed Growth and gas exchange in millet under different doses and sources of nitrogen
title_sort Growth and gas exchange in millet under different doses and sources of nitrogen
author Costa, João Guilherme Justino da
author_facet Costa, João Guilherme Justino da
Gomes, Silas Primola
Sousa, Geocleber Gomes de
Conrado, Jefte Arnon de Almeida
Albuquerque, Andrey Lohan Barbosa
Pimentel, Patrícia Guimarães
Rocha, Amanda Cardoso
Sousa, Henderson Castelo
author_role author
author2 Gomes, Silas Primola
Sousa, Geocleber Gomes de
Conrado, Jefte Arnon de Almeida
Albuquerque, Andrey Lohan Barbosa
Pimentel, Patrícia Guimarães
Rocha, Amanda Cardoso
Sousa, Henderson Castelo
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Costa, João Guilherme Justino da
Gomes, Silas Primola
Sousa, Geocleber Gomes de
Conrado, Jefte Arnon de Almeida
Albuquerque, Andrey Lohan Barbosa
Pimentel, Patrícia Guimarães
Rocha, Amanda Cardoso
Sousa, Henderson Castelo
dc.subject.por.fl_str_mv Adubação
Forragem
Fotossíntese
Pennisetum glaucum L.
Fertilización
Forraje
Fotosíntesis
Pennisetum glaucum L.
Fertilization
Forage
Pennisetum glaucum L
Photosynthesis.
topic Adubação
Forragem
Fotossíntese
Pennisetum glaucum L.
Fertilización
Forraje
Fotosíntesis
Pennisetum glaucum L.
Fertilization
Forage
Pennisetum glaucum L
Photosynthesis.
description The objective was to evaluate growth, dry matter production (DMP) and gas exchange of millet, according to different doses and sources of nitrogen. The design was completely randomized in a 5 x 2 factorial scheme, with five nitrogen doses (40; 60; 80; 100 and 120 kg ha-¹ of N) and two sources of N (urea and ammonium sulfate). The evaluations were carried out at 60 and 85 days after seeding (DAS). The variables leaf area (AF), plant height (AP) and DMP at 60 and 85 DAS and stem diameter (SD at 85 DAS) were influenced by the interaction of N sources and doses. The SD at 60 DAS was influenced only doses. Stomatal conductance (gs) and chlorophyll content were influenced by the interaction between sources and doses, while the rate of CO2 assimilation (A) and transpiration (E) were influenced only by the dose. The nitrogen fertilization, in both sources, influenced the growth and the DMP of the millet, in the different periods of development (60 and 85 DAS). Urea showed a better response to gas exchange than ammonium sulfate, except for stomatal conductance. Thus, up to 60 days after seeding, for grazing purpose, between 60 and 80 kg ha-1 of N is recommended, using urea as the source. For the silage production, from 60 to 85 days after seeding, fertilization between 80 and 100 kg ha-1 of N in the form of urea is recommended.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-16
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://rsdjournal.org/index.php/rsd/article/view/4988
10.33448/rsd-v9i7.4988
url https://rsdjournal.org/index.php/rsd/article/view/4988
identifier_str_mv 10.33448/rsd-v9i7.4988
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/4988/4245
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 Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 9 No. 7; e820974988
Research, Society and Development; Vol. 9 Núm. 7; e820974988
Research, Society and Development; v. 9 n. 7; e820974988
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
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