Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil

Detalhes bibliográficos
Autor(a) principal: Vargas, Milton Alexandre T.
Data de Publicação: 2014
Outros Autores: Suhet, Allert Rosa
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/16578
Resumo: A field experiment was carried out with soybean (Glycine max (L.) Merrill) variety IAC-2, in order to study the effect of inoculant levels and four inoculants, two of them commercial and the others prepared in the laboratory. One of the commercial inoculants was recommended for the variety IAC-2, and the other one was a general non-specific inoculant for the remaining soybean varieties. The two laboratory-prepared inoculants were pure strains of 29 W and 965. Two treatments of 400 kg/ha of N divided into five side-dressing applications were included. One of those treatments received foliar applications of urea (46 kg/ha of N). The best inoculant treatment was the one prepared in the laboratory with the strain 29 W, followed by the commercial inoculant for the variety IAC-2. Levels of the latter inoculant had a significant effect on nodulation and nitrogenase activity but only a small effect on total N and grain yield. The foliar N application increased slightly the percentual N in the seeds, but had no effect on grain yield. Apparently, the variety IAC-2 tends to require specific Rhizobium strains and the strains and inoculants tested did not allow maximum expression of yield potential.
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spelling Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soilEfeito de tipos e níveis de inoculantes na soja cultivada em um solo de cerradossoybean; levels of inoculant; strains; foliar fertilizationsoja; níveis de inoculação; estirpes; adubação foliarA field experiment was carried out with soybean (Glycine max (L.) Merrill) variety IAC-2, in order to study the effect of inoculant levels and four inoculants, two of them commercial and the others prepared in the laboratory. One of the commercial inoculants was recommended for the variety IAC-2, and the other one was a general non-specific inoculant for the remaining soybean varieties. The two laboratory-prepared inoculants were pure strains of 29 W and 965. Two treatments of 400 kg/ha of N divided into five side-dressing applications were included. One of those treatments received foliar applications of urea (46 kg/ha of N). The best inoculant treatment was the one prepared in the laboratory with the strain 29 W, followed by the commercial inoculant for the variety IAC-2. Levels of the latter inoculant had a significant effect on nodulation and nitrogenase activity but only a small effect on total N and grain yield. The foliar N application increased slightly the percentual N in the seeds, but had no effect on grain yield. Apparently, the variety IAC-2 tends to require specific Rhizobium strains and the strains and inoculants tested did not allow maximum expression of yield potential.Foi conduzido um experimento de campo em um solo de primeiro ano de cultivo com a soja (Glycine max (L.)Merrill), variedade IAC-2, visando a estudar o efeito de níveis de inoculantes e o comportamento de quatro inoculantes, sendo dois comerciais e dois preparados em laboratório. Um dos comerciais é recomendado para a cultivar IAC-2 e o outro é indicado para as demais cultivares de soja. Dos inoculantes fabricados em laboratório, um foi preparado com a estirpe 965 e o outro com a estirpe 29 W. Incluíram-se dois tratamentos com 400 kg/ha de N divididos em cinco aplicações em cobertura. Em um destes tratamentos, foram feitas aplicações suplementares de N via foliar (46 kg/ha de N divididos em cinco aplicações semanais a partir do início de formação dos grãos). O melhor tratamento de inoculação foi o do inoculante preparado em laboratório com a estirpe 29 W. Seguiu-se a este o tratamento com o inoculante recomendado para a variedade IAC-2. Os níveis de inoculante exerceram efeito significativo na nodulação e atividade da nitrogenase e um pequeno efeito no N total e produção de grãos. Os tratamentos com N mineral proporcionaram um rendimento de grãos e N total superiores aos obtidos nos tratamentos de inoculação. O N foliar apresentou um pequeno efeito no N percentual dos grãos. Depreende-se, dos resultados obtidos, que a variedade IAC-2 apresenta especificidade em relação às estirpes de Rhizobium, e que as estirpes testadas não apresentam grau de eficiência suficiente para permitir às plantas expressarem todo o seu potencial de produção.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraVargas, Milton Alexandre T.Suhet, Allert Rosa2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16578Pesquisa Agropecuaria Brasileira; v.15, n.3, mar. 1980; 343-347Pesquisa Agropecuária Brasileira; v.15, n.3, mar. 1980; 343-3471678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16578/10861info:eu-repo/semantics/openAccess2014-04-15T19:32:36Zoai:ojs.seer.sct.embrapa.br:article/16578Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T19:32:36Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
Efeito de tipos e níveis de inoculantes na soja cultivada em um solo de cerrados
title Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
spellingShingle Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
Vargas, Milton Alexandre T.
soybean; levels of inoculant; strains; foliar fertilization
soja; níveis de inoculação; estirpes; adubação foliar
title_short Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
title_full Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
title_fullStr Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
title_full_unstemmed Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
title_sort Effect of levels and kinds of inoculant on soybean cultivated on a "cerrado" soil
author Vargas, Milton Alexandre T.
author_facet Vargas, Milton Alexandre T.
Suhet, Allert Rosa
author_role author
author2 Suhet, Allert Rosa
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Vargas, Milton Alexandre T.
Suhet, Allert Rosa
dc.subject.por.fl_str_mv soybean; levels of inoculant; strains; foliar fertilization
soja; níveis de inoculação; estirpes; adubação foliar
topic soybean; levels of inoculant; strains; foliar fertilization
soja; níveis de inoculação; estirpes; adubação foliar
description A field experiment was carried out with soybean (Glycine max (L.) Merrill) variety IAC-2, in order to study the effect of inoculant levels and four inoculants, two of them commercial and the others prepared in the laboratory. One of the commercial inoculants was recommended for the variety IAC-2, and the other one was a general non-specific inoculant for the remaining soybean varieties. The two laboratory-prepared inoculants were pure strains of 29 W and 965. Two treatments of 400 kg/ha of N divided into five side-dressing applications were included. One of those treatments received foliar applications of urea (46 kg/ha of N). The best inoculant treatment was the one prepared in the laboratory with the strain 29 W, followed by the commercial inoculant for the variety IAC-2. Levels of the latter inoculant had a significant effect on nodulation and nitrogenase activity but only a small effect on total N and grain yield. The foliar N application increased slightly the percentual N in the seeds, but had no effect on grain yield. Apparently, the variety IAC-2 tends to require specific Rhizobium strains and the strains and inoculants tested did not allow maximum expression of yield potential.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-15
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/16578
url https://seer.sct.embrapa.br/index.php/pab/article/view/16578
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/16578/10861
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.15, n.3, mar. 1980; 343-347
Pesquisa Agropecuária Brasileira; v.15, n.3, mar. 1980; 343-347
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)
instacron_str EMBRAPA
institution EMBRAPA
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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