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: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/69089 |
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. KEYWORDS: Arachis hypogaea L., inoculants, biological nitrogen fixation, phytopathogens. |
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Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanutEfeito de fungicidas na simbiose entre estirpes de Bradyrhizobium e amendoimSeed 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. KEYWORDS: Arachis hypogaea L., inoculants, biological nitrogen fixation, phytopathogens.O tratamento de sementes com fungicidas é uma prática importante para o controle de fitopatógenos na cultura do amendoim. Todavia, esses produtos podem prejudicar rizobactérias (Bradyrhizobium) e inibir processos como a fixação biológica de nitrogênio. Objetivou-se verificar os efeitos do tratamento de sementes de amendoim cv. BR1 inoculadas com estirpes de Bradyrhizobium spp. com fungicidas. O experimento foi conduzido em casa-de-vegetação, utilizando-se duas combinações de fungicidas [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)] e uma testemunha sem fungicida; dois inoculantes à base de Bradyrhizobium spp. (SEMIA 6144 e ESA 123) e uma testemunha com fonte química nitrogenada (nitrato de amônio). O delineamento experimental foi inteiramente casualizado, em esquema fatorial 3 (2 com fungicida e 1 sem fungicida) x 4 (2 inoculações à base de rizóbios, 1 fonte mineral de N e 1 sem N) x 2 (1 ou 2 aplicações de inoculantes), com 5 repetições. Foram avaliados a massa seca da raiz e da parte aérea, altura de plantas, nodulação e acúmulo de nitrogênio nas folhas. A aplicação de ambas as combinações reduziu o número de nódulos nas raízes das plantas, principalmente para C1. O crescimento vegetativo e o nitrogênio nas folhas foram afetados por C1, enquanto, para C2, houve incrementos superiores aos da testemunha sem fungicidas. ESA 123 foi mais tolerante aos efeitos dos fungicidas na nodulação. Em relação ao número de inoculações, observou-se incremento na taxa de N com duas inoculações. C2, apesar de afetar a nodulação, foi menos tóxica aos inoculantes SEMIA 6144 e ESA 123. PALAVRAS-CHAVE: Arachis hypogaea L., inoculantes, fixação biológica de nitrogênio, fitopatógenos.Escola de Agronomia - Universidade Federal de Goiás2021-10-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/69089Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 51 (2021); e69089Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 51 (2021); e69089Pesquisa Agropecuária Tropical; v. 51 (2021); e690891983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/69089/37273Copyright (c) 2021 Pesquisa Agropecuária Tropicalinfo:eu-repo/semantics/openAccessSantos, Allef Barbosa dosGondim, Tarcísio Marcos de Souza Fernandes Júnior, Paulo IvanLima, Liziane Maria de2021-10-07T19:23:15Zoai:ojs.revistas.ufg.br:article/69089Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:33.016348Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut Efeito de fungicidas na simbiose entre estirpes de Bradyrhizobium e amendoim |
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, Allef Barbosa dos |
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, Allef Barbosa dos |
author_facet |
Santos, Allef Barbosa dos Gondim, Tarcísio Marcos de Souza Fernandes Júnior, Paulo Ivan Lima, Liziane Maria de |
author_role |
author |
author2 |
Gondim, Tarcísio Marcos de Souza Fernandes Júnior, Paulo Ivan Lima, Liziane Maria de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Santos, Allef Barbosa dos Gondim, Tarcísio Marcos de Souza Fernandes Júnior, Paulo Ivan Lima, Liziane Maria de |
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. KEYWORDS: Arachis hypogaea L., inoculants, biological nitrogen fixation, phytopathogens. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-10-06 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/69089 |
url |
https://revistas.ufg.br/pat/article/view/69089 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/69089/37273 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Pesquisa Agropecuária Tropical info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Pesquisa Agropecuária Tropical |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 51 (2021); e69089 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 51 (2021); e69089 Pesquisa Agropecuária Tropical; v. 51 (2021); e69089 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874821099618304 |