Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil

Detalhes bibliográficos
Autor(a) principal: Melo, Shirlanny Ribeiro de
Data de Publicação: 2010
Outros Autores: Zilli, Jerri Édson
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/2000
Resumo: The objective of this work was to evaluate the biological nitrogen fixation (BNF) in five cowpea cultivars: BR 17 Gurguéia, BRS Guariba, BRS Mazagão, UFRR Grão Verde and Pretinho Precoce 1. In 2007, one greenhouse and one field experiment were performed using a factorial design with five cowpea cultivars and four nitrogen sources: urea fertilization (50 kg ha-1 of N), inoculation with BR 3262 or BR 3267 Bradyrhizobium strains, and absolute control. Thirty-five days after plant emergency, the number and dry weight of nodules, the dry matter weight and the total N of the shoots, the nodule efficiency in greenhouse plants and the grain yield for the field experiment plants were evaluated. In the greenhouse, high nodulation and nodule efficiency were observed for both strains in all cultivars. In the field, the nodulation and total N were lower for all cultivars in comparison with the greenhouse experiment, which indicates the interference of edaphoclimatic factors in the BNF. An increase in grain yield was observed for all cultivars as a consequence of the inoculation, especially for the BR 3262 strain.
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spelling Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, BrazilFixação biológica de nitrogênio em cultivares de feijão‑caupi recomendadas para o Estado de RoraimaBradyrhizobium; Vigna unguiculata; biological nitrogen fixationBradyrhizobium; Vigna unguiculata; fixação biológica de nitrogênioThe objective of this work was to evaluate the biological nitrogen fixation (BNF) in five cowpea cultivars: BR 17 Gurguéia, BRS Guariba, BRS Mazagão, UFRR Grão Verde and Pretinho Precoce 1. In 2007, one greenhouse and one field experiment were performed using a factorial design with five cowpea cultivars and four nitrogen sources: urea fertilization (50 kg ha-1 of N), inoculation with BR 3262 or BR 3267 Bradyrhizobium strains, and absolute control. Thirty-five days after plant emergency, the number and dry weight of nodules, the dry matter weight and the total N of the shoots, the nodule efficiency in greenhouse plants and the grain yield for the field experiment plants were evaluated. In the greenhouse, high nodulation and nodule efficiency were observed for both strains in all cultivars. In the field, the nodulation and total N were lower for all cultivars in comparison with the greenhouse experiment, which indicates the interference of edaphoclimatic factors in the BNF. An increase in grain yield was observed for all cultivars as a consequence of the inoculation, especially for the BR 3262 strain.O objetivo deste trabalho foi avaliar a fixação biológica de nitrogênio (FBN) em cinco cultivares de feijão-caupi: BR 17 Gurguéia, BRS Guariba, BRS Mazagão, UFRR Grão Verde e Pretinho Precoce 1. Em 2007, foram conduzidos um experimento em casa de vegetação e outro em campo, em esquema fatorial com cinco cultivares de feijão-caupi e quatro fontes de nitrogênio: adubação com ureia (50 kg ha-1 de N), inoculação com a estirpe de Bradyrhizobium BR 3262 ou BR 3267 e um controle absoluto. Aos 35 dias após a emergência das plantas, foram avaliados número e massa de nódulos secos, massa de matéria seca e N total da parte aérea, eficiência nodular em casa de vegetação e rendimento de grãos na colheita em campo. Em casa de vegetação, foi observada alta nodulação e eficiência nodular para ambas as estirpes em todas as cultivares. Em campo, a nodulação e o N total foram menores para todas as cultivares, comparativamente à casa de vegetação, o que indica interferência de fatores edafoclimáticos na FBN. Ocorreu aumento no rendimento de grãos em todas as cultivares em decorrência da inoculação, especialmente com a estirpe BR 3262.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraEmbrapaMelo, Shirlanny Ribeiro deZilli, Jerri Édson2010-11-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/2000Pesquisa Agropecuaria Brasileira; v.44, n.9, set. 2009; 1177-1183Pesquisa Agropecuária Brasileira; v.44, n.9, set. 2009; 1177-11831678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/2000/5819https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2000/1387info:eu-repo/semantics/openAccess2012-06-17T11:52:36Zoai:ojs.seer.sct.embrapa.br:article/2000Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-06-17T11:52:36Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
Fixação biológica de nitrogênio em cultivares de feijão‑caupi recomendadas para o Estado de Roraima
title Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
spellingShingle Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
Melo, Shirlanny Ribeiro de
Bradyrhizobium; Vigna unguiculata; biological nitrogen fixation
Bradyrhizobium; Vigna unguiculata; fixação biológica de nitrogênio
title_short Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
title_full Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
title_fullStr Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
title_full_unstemmed Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
title_sort Biological nitrogen fixation in cowpea cultivars recommended for Roraima state, Brazil
author Melo, Shirlanny Ribeiro de
author_facet Melo, Shirlanny Ribeiro de
Zilli, Jerri Édson
author_role author
author2 Zilli, Jerri Édson
author2_role author
dc.contributor.none.fl_str_mv
Embrapa
dc.contributor.author.fl_str_mv Melo, Shirlanny Ribeiro de
Zilli, Jerri Édson
dc.subject.por.fl_str_mv Bradyrhizobium; Vigna unguiculata; biological nitrogen fixation
Bradyrhizobium; Vigna unguiculata; fixação biológica de nitrogênio
topic Bradyrhizobium; Vigna unguiculata; biological nitrogen fixation
Bradyrhizobium; Vigna unguiculata; fixação biológica de nitrogênio
description The objective of this work was to evaluate the biological nitrogen fixation (BNF) in five cowpea cultivars: BR 17 Gurguéia, BRS Guariba, BRS Mazagão, UFRR Grão Verde and Pretinho Precoce 1. In 2007, one greenhouse and one field experiment were performed using a factorial design with five cowpea cultivars and four nitrogen sources: urea fertilization (50 kg ha-1 of N), inoculation with BR 3262 or BR 3267 Bradyrhizobium strains, and absolute control. Thirty-five days after plant emergency, the number and dry weight of nodules, the dry matter weight and the total N of the shoots, the nodule efficiency in greenhouse plants and the grain yield for the field experiment plants were evaluated. In the greenhouse, high nodulation and nodule efficiency were observed for both strains in all cultivars. In the field, the nodulation and total N were lower for all cultivars in comparison with the greenhouse experiment, which indicates the interference of edaphoclimatic factors in the BNF. An increase in grain yield was observed for all cultivars as a consequence of the inoculation, especially for the BR 3262 strain.
publishDate 2010
dc.date.none.fl_str_mv 2010-11-29
dc.type.none.fl_str_mv
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://seer.sct.embrapa.br/index.php/pab/article/view/2000
url https://seer.sct.embrapa.br/index.php/pab/article/view/2000
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/2000/5819
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/2000/1387
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.44, n.9, set. 2009; 1177-1183
Pesquisa Agropecuária Brasileira; v.44, n.9, set. 2009; 1177-1183
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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