Nitrogen management and application of Azospirillum brasilense in corn

Detalhes bibliográficos
Autor(a) principal: Contardi, Lucymara Merquides
Data de Publicação: 2020
Outros Autores: Alvarez, Rita de Cássia Félix, Lima, Sebastião Ferreira de, Paiva Neto, Vespasiano Borges de, Brasil, Marivaine da Silva, Ramires, Roberta de Vasconcelos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/5791
Resumo: The objective of this work was to evaluate the use of Azospirillum brasilense applied in seeds and in the sowing furrow, associated with the use of nitrogen in sowing and cover over the corn crop. The experiment used a randomized block design, with 19 treatments and four repetitions, constituting application modes of A. brasilense (seeds and planting furrow) associated with nitrogen fertilization of sowing and cover. The number of ears per plant, the mass of grains per ear, the mass of one hundred grains, the grain yield, the total nitrogen content and the quantification of diazotrophic bacteria were evaluated. The application of the 300 mL p.c. ha-1 of the inoculant in the planting furrow associated with 20 kg ha-1 of N at sowing and 120 kg ha-1 of N in cover provided the highest grain yield. The productivity of corn grains, the mass of one hundred grains and the N content in the grains are benefited by the use of the bacterium, applied in the seeds or in the cultivation furrow, however, it does not substitute the application of nitrogen, in order to reach high productivity. Seed inoculation in the presence of nitrogen fertilization promoted a greater population of diazotrophic bacteria per gram of root. The amount of Azospirillum sp. per gram of fresh root mass is not correlated with grain yield.
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spelling Nitrogen management and application of Azospirillum brasilense in cornManejo de nitrógeno y aplicación de Azospirillum brasilense en maízManejo de nitrogênio e modo de aplicação de Azospirillum brasilense em milhoZea maysAdubação nitrogenadaBactérias diazotróficasPromotores de crescimento.Zea maysFertilización nitrogenadaBacterias diazotróficasPromotores de crecimiento.Zea maysNitrogen fertilizationDiazotrophic bacteriaGrowth promoters.The objective of this work was to evaluate the use of Azospirillum brasilense applied in seeds and in the sowing furrow, associated with the use of nitrogen in sowing and cover over the corn crop. The experiment used a randomized block design, with 19 treatments and four repetitions, constituting application modes of A. brasilense (seeds and planting furrow) associated with nitrogen fertilization of sowing and cover. The number of ears per plant, the mass of grains per ear, the mass of one hundred grains, the grain yield, the total nitrogen content and the quantification of diazotrophic bacteria were evaluated. The application of the 300 mL p.c. ha-1 of the inoculant in the planting furrow associated with 20 kg ha-1 of N at sowing and 120 kg ha-1 of N in cover provided the highest grain yield. The productivity of corn grains, the mass of one hundred grains and the N content in the grains are benefited by the use of the bacterium, applied in the seeds or in the cultivation furrow, however, it does not substitute the application of nitrogen, in order to reach high productivity. Seed inoculation in the presence of nitrogen fertilization promoted a greater population of diazotrophic bacteria per gram of root. The amount of Azospirillum sp. per gram of fresh root mass is not correlated with grain yield.El objetivo de este trabajo fue evaluar el uso de Azospirillum brasilense aplicado en semillas y en el surco de siembra, asociado con el uso de nitrógeno em la siembra y cobertura sobre el cultivo de maíz. El experimento utilizó un diseño de bloques al azar, con 19 tratamientos y cuatro repeticiones, que constituyen modos de aplicación de A. brasilense (semillas y surcos de siembra) asociados con la fertilización nitrogenada de la siembra y la cubierta. Se evaluó el número de mazorcas por planta, la masa de granos por mazorca, la masa de cien granos, el rendimiento de grano, el contenido total de nitrógeno y la cuantificación de bacterias diazotróficas. La aplicación de 300 ml p.c. ha-1 del inoculante en el surco de siembra asociado con 20 kg ha-1 de N en la siembra y 120 kg ha-1 de N en cubierta proporcionaron el mayor rendimiento de grano. La productividad de los granos de maíz, la masa de cien granos y el contenido de N en los granos se ven beneficiados por el uso de la bacteria, aplicada en las semillas o en el surco de cultivo, sin embargo, no sustituye la aplicación de nitrógeno, para alcanzar una alta productividad. La inoculación de semillas en presencia de fertilización nitrogenada promovió una mayor población de bacterias diazotróficas por gramo de raíz. La cantidad de Azospirillum sp. por gramo de masa de raíz fresca no está correlacionado con el rendimiento de grano.O objetivo desse trabalho foi avaliar o uso de Azospirillum brasilense aplicado em sementes e no sulco de semeadura, associado ao uso de nitrogênio em semeadura e cobertura sobre a cultura do milho. O experimento utilizou o delineamento experimental em blocos casualizados, com 19 tratamentos e quatro repetições, constituindo-se de modos de aplicação de A. brasilense (sementes e sulco de plantio) associado à adubação nitrogenada de semeadura e cobertura. Foram avaliados o número de espiga por planta, a massa de grãos por espiga, a massa de cem grãos, a produtividade de grãos, o teor de nitrogênio total e a quantificação das bactérias diazotróficas. A aplicação da dose de 300 mL p.c. ha-1 do inoculante no sulco de plantio associado a 20 kg ha-1 de N na semeadura e 120 kg ha-1 de N em cobertura proporcionaram a maior produtividade de grãos. A produtividade de grãos de milho, a massa de cem grãos e o teor de N nos grãos são beneficiados pelo uso da bactéria, aplicada nas sementes ou no sulco de cultivo, no entanto, não substitui a aplicação de nitrogênio, para se atingir altas produtividades. A inoculação de sementes na presença de adubação nitrogenada promoveu maior população de bactérias diazotróficas por grama de raiz. A quantidade de Azospirillum sp. por grama de massa fresca de raiz não está correlacionada a produtividade de grãos.Research, Society and Development2020-07-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/579110.33448/rsd-v9i8.5791Research, Society and Development; Vol. 9 No. 8; e553985791Research, Society and Development; Vol. 9 Núm. 8; e553985791Research, Society and Development; v. 9 n. 8; e5539857912525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/5791/5152Copyright (c) 2020 Lucymara Merquides Contardi, Rita de Cássia Félix Alvarez, Sebastião Ferreira de Lima, Vespasiano Borges de Paiva Neto, Marivaine da Silva Brasil, Roberta de Vasconcelos Ramireshttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessContardi, Lucymara MerquidesAlvarez, Rita de Cássia FélixLima, Sebastião Ferreira dePaiva Neto, Vespasiano Borges deBrasil, Marivaine da SilvaRamires, Roberta de Vasconcelos2020-08-20T18:00:17Zoai:ojs.pkp.sfu.ca:article/5791Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:29:11.900373Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Nitrogen management and application of Azospirillum brasilense in corn
Manejo de nitrógeno y aplicación de Azospirillum brasilense en maíz
Manejo de nitrogênio e modo de aplicação de Azospirillum brasilense em milho
title Nitrogen management and application of Azospirillum brasilense in corn
spellingShingle Nitrogen management and application of Azospirillum brasilense in corn
Contardi, Lucymara Merquides
Zea mays
Adubação nitrogenada
Bactérias diazotróficas
Promotores de crescimento.
Zea mays
Fertilización nitrogenada
Bacterias diazotróficas
Promotores de crecimiento.
Zea mays
Nitrogen fertilization
Diazotrophic bacteria
Growth promoters.
title_short Nitrogen management and application of Azospirillum brasilense in corn
title_full Nitrogen management and application of Azospirillum brasilense in corn
title_fullStr Nitrogen management and application of Azospirillum brasilense in corn
title_full_unstemmed Nitrogen management and application of Azospirillum brasilense in corn
title_sort Nitrogen management and application of Azospirillum brasilense in corn
author Contardi, Lucymara Merquides
author_facet Contardi, Lucymara Merquides
Alvarez, Rita de Cássia Félix
Lima, Sebastião Ferreira de
Paiva Neto, Vespasiano Borges de
Brasil, Marivaine da Silva
Ramires, Roberta de Vasconcelos
author_role author
author2 Alvarez, Rita de Cássia Félix
Lima, Sebastião Ferreira de
Paiva Neto, Vespasiano Borges de
Brasil, Marivaine da Silva
Ramires, Roberta de Vasconcelos
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Contardi, Lucymara Merquides
Alvarez, Rita de Cássia Félix
Lima, Sebastião Ferreira de
Paiva Neto, Vespasiano Borges de
Brasil, Marivaine da Silva
Ramires, Roberta de Vasconcelos
dc.subject.por.fl_str_mv Zea mays
Adubação nitrogenada
Bactérias diazotróficas
Promotores de crescimento.
Zea mays
Fertilización nitrogenada
Bacterias diazotróficas
Promotores de crecimiento.
Zea mays
Nitrogen fertilization
Diazotrophic bacteria
Growth promoters.
topic Zea mays
Adubação nitrogenada
Bactérias diazotróficas
Promotores de crescimento.
Zea mays
Fertilización nitrogenada
Bacterias diazotróficas
Promotores de crecimiento.
Zea mays
Nitrogen fertilization
Diazotrophic bacteria
Growth promoters.
description The objective of this work was to evaluate the use of Azospirillum brasilense applied in seeds and in the sowing furrow, associated with the use of nitrogen in sowing and cover over the corn crop. The experiment used a randomized block design, with 19 treatments and four repetitions, constituting application modes of A. brasilense (seeds and planting furrow) associated with nitrogen fertilization of sowing and cover. The number of ears per plant, the mass of grains per ear, the mass of one hundred grains, the grain yield, the total nitrogen content and the quantification of diazotrophic bacteria were evaluated. The application of the 300 mL p.c. ha-1 of the inoculant in the planting furrow associated with 20 kg ha-1 of N at sowing and 120 kg ha-1 of N in cover provided the highest grain yield. The productivity of corn grains, the mass of one hundred grains and the N content in the grains are benefited by the use of the bacterium, applied in the seeds or in the cultivation furrow, however, it does not substitute the application of nitrogen, in order to reach high productivity. Seed inoculation in the presence of nitrogen fertilization promoted a greater population of diazotrophic bacteria per gram of root. The amount of Azospirillum sp. per gram of fresh root mass is not correlated with grain yield.
publishDate 2020
dc.date.none.fl_str_mv 2020-07-16
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/5791
10.33448/rsd-v9i8.5791
url https://rsdjournal.org/index.php/rsd/article/view/5791
identifier_str_mv 10.33448/rsd-v9i8.5791
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/5791/5152
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0
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. 8; e553985791
Research, Society and Development; Vol. 9 Núm. 8; e553985791
Research, Society and Development; v. 9 n. 8; e553985791
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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