Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut.
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137035 |
Resumo: | Seed treatment with fungicides is an important practice for the control of phytopathogens in peanut crops. However, these products can harm rhizobacteria (Bradyrhizobium) and inhibit processes such as biological nitrogen fixation. This study aimed to verify the effects of the treatment of peanut seeds cv. BR1 inoculated with Bradyrhizobium spp. with fungicides. The experiment was conducted in a greenhouse, using two combinations of fungicides [C1: carboxin (200 g L-1) + tiram (200 g L-1); C2: pyraclostrobin (25 g L-1) + thiophanate methyl (225 g L-1) + fipronil (250 g L-1)] and one control without fungicide; two inoculants based on Bradyrhizobium spp. (SEMIA 6144 and ESA 123) and one control with a nitrogen chemical source (ammonium nitrate). The experimental design was completely randomized, in a 3 (2 with fungicide and 1 without fungicide) x 4 (2 inoculations based on rhizobia, 1 N mineral source and 1 without N) x 2 (1 or 2 inoculants applications) factorial scheme, with 5 replications. The root and shoot dry mass, plant height, nodulation and leaf nitrogen accumulation were evaluated. The application of both combinations reduced the number of nodules on plant roots, mainly for C1. The vegetative growth and nitrogen in the leaves were affected by C1, whereas, for C2, there were increments higher than for the control without fungicides. ESA 123 was more tolerant to the effects of fungicides on nodulation. Regarding the number of inoculations, there was an increase in the nitrogen rate with two inoculations. C2, despite affecting the nodulation, was less toxic to the inoculants SEMIA 6144 and ESA 123. |
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Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut.Fixação biológica de nitrogênioFitopatógenoAmendoimEstirpeSementeFungicidaArachis HypogaeaInoculanteFungoBradyrhizobiumPeanutsFungicidesSeed treatment with fungicides is an important practice for the control of phytopathogens in peanut crops. However, these products can harm rhizobacteria (Bradyrhizobium) and inhibit processes such as biological nitrogen fixation. This study aimed to verify the effects of the treatment of peanut seeds cv. BR1 inoculated with Bradyrhizobium spp. with fungicides. The experiment was conducted in a greenhouse, using two combinations of fungicides [C1: carboxin (200 g L-1) + tiram (200 g L-1); C2: pyraclostrobin (25 g L-1) + thiophanate methyl (225 g L-1) + fipronil (250 g L-1)] and one control without fungicide; two inoculants based on Bradyrhizobium spp. (SEMIA 6144 and ESA 123) and one control with a nitrogen chemical source (ammonium nitrate). The experimental design was completely randomized, in a 3 (2 with fungicide and 1 without fungicide) x 4 (2 inoculations based on rhizobia, 1 N mineral source and 1 without N) x 2 (1 or 2 inoculants applications) factorial scheme, with 5 replications. The root and shoot dry mass, plant height, nodulation and leaf nitrogen accumulation were evaluated. The application of both combinations reduced the number of nodules on plant roots, mainly for C1. The vegetative growth and nitrogen in the leaves were affected by C1, whereas, for C2, there were increments higher than for the control without fungicides. ESA 123 was more tolerant to the effects of fungicides on nodulation. Regarding the number of inoculations, there was an increase in the nitrogen rate with two inoculations. C2, despite affecting the nodulation, was less toxic to the inoculants SEMIA 6144 and ESA 123.ALLEF BARBOSA DOS SANTOS, Universidade Estadual da Paraíba; TARCISIO MARCOS DE SOUZA GONDIM, CNPA; PAULO IVAN FERNANDES JUNIOR, CPATSA; LIZIANE MARIA DE LIMA, CNPA.SANTOS, A. B. dosGONDIM, T. M. de S.FERNANDES JUNIOR, P. I.LIMA, L. M. de2021-12-03T12:00:57Z2021-12-03T12:00:57Z2021-12-032021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePesquisa Agropecuária Tropical, v. 51, e69089, 2021.1983-4063http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137035enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2021-12-03T12:01:06Zoai:www.alice.cnptia.embrapa.br:doc/1137035Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542021-12-03T12:01:06falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542021-12-03T12:01:06Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. |
title |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. |
spellingShingle |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. SANTOS, A. B. dos Fixação biológica de nitrogênio Fitopatógeno Amendoim Estirpe Semente Fungicida Arachis Hypogaea Inoculante Fungo Bradyrhizobium Peanuts Fungicides |
title_short |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. |
title_full |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. |
title_fullStr |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. |
title_full_unstemmed |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. |
title_sort |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut. |
author |
SANTOS, A. B. dos |
author_facet |
SANTOS, A. B. dos GONDIM, T. M. de S. FERNANDES JUNIOR, P. I. LIMA, L. M. de |
author_role |
author |
author2 |
GONDIM, T. M. de S. FERNANDES JUNIOR, P. I. LIMA, L. M. de |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
ALLEF BARBOSA DOS SANTOS, Universidade Estadual da Paraíba; TARCISIO MARCOS DE SOUZA GONDIM, CNPA; PAULO IVAN FERNANDES JUNIOR, CPATSA; LIZIANE MARIA DE LIMA, CNPA. |
dc.contributor.author.fl_str_mv |
SANTOS, A. B. dos GONDIM, T. M. de S. FERNANDES JUNIOR, P. I. LIMA, L. M. de |
dc.subject.por.fl_str_mv |
Fixação biológica de nitrogênio Fitopatógeno Amendoim Estirpe Semente Fungicida Arachis Hypogaea Inoculante Fungo Bradyrhizobium Peanuts Fungicides |
topic |
Fixação biológica de nitrogênio Fitopatógeno Amendoim Estirpe Semente Fungicida Arachis Hypogaea Inoculante Fungo Bradyrhizobium Peanuts Fungicides |
description |
Seed treatment with fungicides is an important practice for the control of phytopathogens in peanut crops. However, these products can harm rhizobacteria (Bradyrhizobium) and inhibit processes such as biological nitrogen fixation. This study aimed to verify the effects of the treatment of peanut seeds cv. BR1 inoculated with Bradyrhizobium spp. with fungicides. The experiment was conducted in a greenhouse, using two combinations of fungicides [C1: carboxin (200 g L-1) + tiram (200 g L-1); C2: pyraclostrobin (25 g L-1) + thiophanate methyl (225 g L-1) + fipronil (250 g L-1)] and one control without fungicide; two inoculants based on Bradyrhizobium spp. (SEMIA 6144 and ESA 123) and one control with a nitrogen chemical source (ammonium nitrate). The experimental design was completely randomized, in a 3 (2 with fungicide and 1 without fungicide) x 4 (2 inoculations based on rhizobia, 1 N mineral source and 1 without N) x 2 (1 or 2 inoculants applications) factorial scheme, with 5 replications. The root and shoot dry mass, plant height, nodulation and leaf nitrogen accumulation were evaluated. The application of both combinations reduced the number of nodules on plant roots, mainly for C1. The vegetative growth and nitrogen in the leaves were affected by C1, whereas, for C2, there were increments higher than for the control without fungicides. ESA 123 was more tolerant to the effects of fungicides on nodulation. Regarding the number of inoculations, there was an increase in the nitrogen rate with two inoculations. C2, despite affecting the nodulation, was less toxic to the inoculants SEMIA 6144 and ESA 123. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-03T12:00:57Z 2021-12-03T12:00:57Z 2021-12-03 2021 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Pesquisa Agropecuária Tropical, v. 51, e69089, 2021. 1983-4063 http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137035 |
identifier_str_mv |
Pesquisa Agropecuária Tropical, v. 51, e69089, 2021. 1983-4063 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137035 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503513044156416 |