Methybacterium symbioticum e adubação nitrogenada em milho e cevada
Պահպանված է:
| Հիմնական հեղինակ: | |
|---|---|
| Հրապարակման ամսաթիվ: | 2025 |
| Ձևաչափ: | Master thesis |
| Լեզու: | por |
| Աղբյուր: | Repositório Institucional da UPF |
| Download full: | https://repositorio.upf.br/handle/123456789/9677 |
Ամփոփում: | Barley (Hordeum vulgare) and maize (Zea mays) require a significant amount of nitrogen throughout their development cycle. Although essential, the processes involved in the production of nitrogen fertilizers demand high energy inputs and lead to the emission of greenhouse gases. In addition, they are subject to losses through volatilization and leaching. As a result, microbial alternatives for biological nitrogen fixation have been sought, among them Methylobacterium symbioticum SB23, a new bacterial strain. The objective of this study was to evaluate possible changes in the growth and grain yield of maize and barley under different topdressing nitrogen rates combined with foliar application of Methylobacterium symbioticum. Four experiments were conducted: two with maize (in Coxilha–RS and Carazinho–RS) and two with barley (in Espumoso–RS, 2023, and Coxilha–RS, 2024). Different nitrogen doses were assessed for each crop, with or without foliar application of Methylobacterium symbioticum. Evaluated variables included physiological traits, such as photosynthetic activity and chlorophyll content; morphological traits, such as plant height and stem diameter; and productive traits, including fresh biomass, dry biomass, and grain yield. There was no interaction between the bacterium and nitrogen doses for any of the variables assessed in maize and barley. Results indicated that nitrogen supply enhances the photosynthetic activity of barley plants, positively affecting their morphological and productive components. Methylobacterium symbioticum improved the photosynthetic activity in the BRS Cauê cultivar and increased chlorophyll content and biomass in ABI Valente plants. Foliar application of Methylobacterium symbioticum can promote increases in grain yield, chlorophyll content, plant height, and stem diameter in maize. |
| _version_ | 1871607641387565056 |
|---|---|
| author | Gallina, Alessandra |
| author_browse | Gallina, Alessandra |
| author_facet | Gallina, Alessandra |
| author_role | author |
| collection | Repositório Institucional da UPF |
| dc.contributor.author.fl_str_mv | Gallina, Alessandra |
| dc.contributor.none.fl_str_mv | Bortoluzzi, Mateus Possebon Escosteguy, Pedro Alexandre Varella |
| dc.date.none.fl_str_mv | 2025-12-04T13:38:02Z 2025 2025-04-11 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.uri.fl_str_mv | GALLINA, Alessandra. Methybacterium symbioticum e adubação nitrogenada em milho e cevada. 2025. 94 f. Dissertação (Mestrado em Agronomia) - Universidade de Passo Fundo, 2025. https://repositorio.upf.br/handle/123456789/9677 |
| dc.language.iso.fl_str_mv | por |
| dc.publisher.none.fl_str_mv | Universidade de Passo Fundo Brasil UPF Programa de Pós-Graduação em Agronomia Escola de Ciências Agrárias, Inovação e Negócios |
| dc.rights.driver.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.source.none.fl_str_mv | reponame:Repositório Institucional da UPF instname:Universidade de Passo Fundo (UPF) instacron:UPF |
| dc.subject.por.fl_str_mv | Fertilizantes de nitrogênio Milho - Cultivo Cevada - Cultivo Ciências Agrárias |
| dc.title.none.fl_str_mv | Methybacterium symbioticum e adubação nitrogenada em milho e cevada |
| dc.type.driver.fl_str_mv | info:eu-repo/semantics/masterThesis |
| dc.type.status.fl_str_mv | info:eu-repo/semantics/publishedVersion |
| description | Barley (Hordeum vulgare) and maize (Zea mays) require a significant amount of nitrogen throughout their development cycle. Although essential, the processes involved in the production of nitrogen fertilizers demand high energy inputs and lead to the emission of greenhouse gases. In addition, they are subject to losses through volatilization and leaching. As a result, microbial alternatives for biological nitrogen fixation have been sought, among them Methylobacterium symbioticum SB23, a new bacterial strain. The objective of this study was to evaluate possible changes in the growth and grain yield of maize and barley under different topdressing nitrogen rates combined with foliar application of Methylobacterium symbioticum. Four experiments were conducted: two with maize (in Coxilha–RS and Carazinho–RS) and two with barley (in Espumoso–RS, 2023, and Coxilha–RS, 2024). Different nitrogen doses were assessed for each crop, with or without foliar application of Methylobacterium symbioticum. Evaluated variables included physiological traits, such as photosynthetic activity and chlorophyll content; morphological traits, such as plant height and stem diameter; and productive traits, including fresh biomass, dry biomass, and grain yield. There was no interaction between the bacterium and nitrogen doses for any of the variables assessed in maize and barley. Results indicated that nitrogen supply enhances the photosynthetic activity of barley plants, positively affecting their morphological and productive components. Methylobacterium symbioticum improved the photosynthetic activity in the BRS Cauê cultivar and increased chlorophyll content and biomass in ABI Valente plants. Foliar application of Methylobacterium symbioticum can promote increases in grain yield, chlorophyll content, plant height, and stem diameter in maize. |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| id | UPF_be1add2da60fb8a9b12bb699aba0e97b |
| identifier_str_mv | GALLINA, Alessandra. Methybacterium symbioticum e adubação nitrogenada em milho e cevada. 2025. 94 f. Dissertação (Mestrado em Agronomia) - Universidade de Passo Fundo, 2025. |
| instacron_str | UPF |
| institution | UPF |
| instname_str | Universidade de Passo Fundo (UPF) |
| language | por |
| network_acronym_str | UPF |
| network_name_str | Repositório Institucional da UPF |
| oai_identifier_str | oai:repositorio.upf.br:123456789/9677 |
| publishDate | 2025 |
| publishDateSort | 2025 |
| publisher.none.fl_str_mv | Universidade de Passo Fundo Brasil UPF Programa de Pós-Graduação em Agronomia Escola de Ciências Agrárias, Inovação e Negócios |
| reponame_str | Repositório Institucional da UPF |
| repository.mail.fl_str_mv | jucelei@upf.br||biblio@upf.br |
| repository.name.fl_str_mv | Repositório Institucional da UPF - Universidade de Passo Fundo (UPF) |
| repository_id_str | 1610 |
| spelling | Methybacterium symbioticum e adubação nitrogenada em milho e cevadaFertilizantes de nitrogênioMilho - CultivoCevada - CultivoCiências AgráriasBarley (Hordeum vulgare) and maize (Zea mays) require a significant amount of nitrogen throughout their development cycle. Although essential, the processes involved in the production of nitrogen fertilizers demand high energy inputs and lead to the emission of greenhouse gases. In addition, they are subject to losses through volatilization and leaching. As a result, microbial alternatives for biological nitrogen fixation have been sought, among them Methylobacterium symbioticum SB23, a new bacterial strain. The objective of this study was to evaluate possible changes in the growth and grain yield of maize and barley under different topdressing nitrogen rates combined with foliar application of Methylobacterium symbioticum. Four experiments were conducted: two with maize (in Coxilha–RS and Carazinho–RS) and two with barley (in Espumoso–RS, 2023, and Coxilha–RS, 2024). Different nitrogen doses were assessed for each crop, with or without foliar application of Methylobacterium symbioticum. Evaluated variables included physiological traits, such as photosynthetic activity and chlorophyll content; morphological traits, such as plant height and stem diameter; and productive traits, including fresh biomass, dry biomass, and grain yield. There was no interaction between the bacterium and nitrogen doses for any of the variables assessed in maize and barley. Results indicated that nitrogen supply enhances the photosynthetic activity of barley plants, positively affecting their morphological and productive components. Methylobacterium symbioticum improved the photosynthetic activity in the BRS Cauê cultivar and increased chlorophyll content and biomass in ABI Valente plants. Foliar application of Methylobacterium symbioticum can promote increases in grain yield, chlorophyll content, plant height, and stem diameter in maize.CAPESA cevada (Hordeum vulgare) e o milho (Zea mays) exigem uma quantidade significativa de nitrogênio durante o ciclo de desenvolvimento. Embora muito importantes, os processos para obtenção de fertilizantes nitrogenados utilizam elevada quantidade de energia e ocorre a liberação de gases de efeito estufa. Além disso, apresentam perdas por volatilização e por lixiviação. Em razão disso, têm-se buscado microrganismos para a fixação biológica de nitrogênio, dentre eles, Methylobacterium symbioticum SB23, que é uma nova cepa da bactéria. Objetivou-se verificar possíveis alterações no crescimento e na produtividade de grãos de milho e cevada sob diferentes doses de nitrogênio em cobertura e com a utilização de Methylobacterium symbioticum, aplicado via foliar. Foram conduzidos dois experimentos com milho (Coxilha - RS e Carazinho ¿ RS) e dois experimentos com cevada (Espumoso - RS, 2023; Coxilha - RS, 2024), em que foram avaliadas diferentes doses de nitrogênio para cada cultura associada à aplicação ou não de Methylobacterium symbioticum. As variáveis avaliadas foram desde características fisiológicas, como atividade fotossintética e clorofila, morfológicas como altura de plantas e diâmetro de colmo, até características produtivas, como a produção de massa de matéria úmida, massa de matéria seca e produtividade de grãos. Não houve interação entre a bactéria e as doses de nitrogênio para as variáveis avaliadas para a cultura do milho e cevada. Os resultados apontam que o incremento de nitrogênio melhora a atividade fotossintética de plantas de cevada, refletindo nos seus componentes morfológicos e produtivos. A bactéria Methylobacterium symbioticum proporcionou melhoria na atividade fotossintética da cultivar BRS Cauê e teor de clorofila e biomassa nas plantas da cultivar ABI Valente. O uso Methylobacterium symbioticum aplicado via foliar pode promover aumento da produtividade de grãos, clorofila, altura de planta e diâmetro de colmo de plantas de milho.Universidade de Passo FundoBrasilUPFPrograma de Pós-Graduação em AgronomiaEscola de Ciências Agrárias, Inovação e NegóciosBortoluzzi, Mateus PossebonEscosteguy, Pedro Alexandre VarellaGallina, Alessandra2025-12-04T13:38:02Z20252025-04-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfGALLINA, Alessandra. Methybacterium symbioticum e adubação nitrogenada em milho e cevada. 2025. 94 f. Dissertação (Mestrado em Agronomia) - Universidade de Passo Fundo, 2025.https://repositorio.upf.br/handle/123456789/9677porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UPFinstname:Universidade de Passo Fundo (UPF)instacron:UPF2025-12-30T20:17:43Zoai:repositorio.upf.br:123456789/9677Repositório InstitucionalPRIhttp://repositorio.upf.br/oai/requestjucelei@upf.br||biblio@upf.bropendoar:16102025-12-30T20:17:43Repositório Institucional da UPF - Universidade de Passo Fundo (UPF) |
| spellingShingle | Methybacterium symbioticum e adubação nitrogenada em milho e cevada Gallina, Alessandra Fertilizantes de nitrogênio Milho - Cultivo Cevada - Cultivo Ciências Agrárias |
| status_str | publishedVersion |
| title | Methybacterium symbioticum e adubação nitrogenada em milho e cevada |
| title_full | Methybacterium symbioticum e adubação nitrogenada em milho e cevada |
| title_fullStr | Methybacterium symbioticum e adubação nitrogenada em milho e cevada |
| title_full_unstemmed | Methybacterium symbioticum e adubação nitrogenada em milho e cevada |
| title_short | Methybacterium symbioticum e adubação nitrogenada em milho e cevada |
| title_sort | Methybacterium symbioticum e adubação nitrogenada em milho e cevada |
| topic | Fertilizantes de nitrogênio Milho - Cultivo Cevada - Cultivo Ciências Agrárias |
| url | https://repositorio.upf.br/handle/123456789/9677 |