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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
16/02/2022 |
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Data da última atualização: |
22/04/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FERREIRA, L. A. R.; SILVA, S. R.; LOLLATO, R. P.; FERREIRA, E. B.; KÖLLN, O. T. |
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Afiliação: |
LETÍCIA APARECIDA RONQUI FERREIRA, UENP; SERGIO RICARDO SILVA, CNPT; RÔMULO PISA LOLLATO, Kansas State University; ERIC BATISTA FERREIRA, UNIFAL-MG; ORIEL TIAGO KÖLLN, UENP. |
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Título: |
Wheat nitrogen utilization efficiency and yield as affected by nitrogen management and environmental conditions. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Emirates Journal of Food and Agriculture, v. 33, n. 11, Nov. 2021. |
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DOI: |
https://doi.org/10.9755/ejfa.2021.v33.i11.2788. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Nitrogen (N) is the main nutrient for plant nutrition, however, its fertilization management is still very complex. To evaluate wheat N utilization efficiency (NUtE) and yield in response to N fertilization management considering the influence of environmental conditions, an experiment was carried out in three field conditions in Southern Brazil: Londrina in rainfed and irrigation conditions, and Ponta Grossa in rainfed. A complete (2 × 2 × 2) + 1 factorial arrangement evaluated two N rates (40 and 80 kg ha-1), two N sources (ammonium nitrate and urea), two N timings of fertilization (at sowing or at the beginning of plant tillering), and additional treatment without N fertilization. Agronomic characteristics related to wheat productivity and N plant nutrition were evaluated. Irrigation increased the density of fertile spikes and the N accumulated in the shoot dry matter at anthesis, which partially explained the better grain yield in the irrigated condition. The higher N accumulation in the shoot dry matter was essential for grain yield increase in the environments with lower water deficit, based on their higher NUtE for grain yield. Nitrogen fertilization reduced NUtE for grain yield in Londrina (in rainfed and irrigation conditions), and increased NUtE for shoot dry matter production in all environments. In a colder condition (i.e. Ponta Grossa), the use of a higher N rate at sowing provided greater grain yield, thousand-grain weight, and density of fertile spikes. Nitrogen rate can be reduced in warmer and wetter environmental conditions that favor the mineralization of soil organic matter and the decomposition of soybean straw. The choice for urea or ammonium nitrate can be based on economic criteria in environments with low water deficit and low potential for NH3 volatilization. Nitrogen fertilization carried out exclusively at wheat sowing may be suitable to supply spring wheat N requirements. MenosAbstract: Nitrogen (N) is the main nutrient for plant nutrition, however, its fertilization management is still very complex. To evaluate wheat N utilization efficiency (NUtE) and yield in response to N fertilization management considering the influence of environmental conditions, an experiment was carried out in three field conditions in Southern Brazil: Londrina in rainfed and irrigation conditions, and Ponta Grossa in rainfed. A complete (2 × 2 × 2) + 1 factorial arrangement evaluated two N rates (40 and 80 kg ha-1), two N sources (ammonium nitrate and urea), two N timings of fertilization (at sowing or at the beginning of plant tillering), and additional treatment without N fertilization. Agronomic characteristics related to wheat productivity and N plant nutrition were evaluated. Irrigation increased the density of fertile spikes and the N accumulated in the shoot dry matter at anthesis, which partially explained the better grain yield in the irrigated condition. The higher N accumulation in the shoot dry matter was essential for grain yield increase in the environments with lower water deficit, based on their higher NUtE for grain yield. Nitrogen fertilization reduced NUtE for grain yield in Londrina (in rainfed and irrigation conditions), and increased NUtE for shoot dry matter production in all environments. In a colder condition (i.e. Ponta Grossa), the use of a higher N rate at sowing provided greater grain yield, thousand-grain weight, and density of fertile spik... Mostrar Tudo |
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Palavras-Chave: |
Adubação nitrogenada; Fonte de nitrogênio de fertilizante; Nitrogen source of fertilizer; Nitrogen timing of fertilization. |
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Thesagro: |
Abacate; Nitrato de Amônio; Triticum Aestivum; Uréia. |
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Thesaurus Nal: |
Ammonium nitrate; Spring wheat; Urea. |
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Categoria do assunto: |
-- |
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Marc: |
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Registro original: |
Embrapa Trigo (CNPT) |
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| Registros recuperados : 10 | |
| 1. |  | LEAL, A. C.; RAMOS, A. L. M. Introducao e avaliacao preliminar de especies florestais de uso multiplo no Norte do Parana. In: CONGRESSO BRASILEIRO SOBRE SISTEMAS AGROFLORESTAIS, 1., ENCONTRO SOBRE SISTEMAS AGROFLORESTAIS NOS PAÍSES DO MERCOSUL, 1., 1994, Porto Velho. Anais. Colombo: EMBRAPA-CNPF, 1994. v. 2, p. 229-232. (EMBRAPA-CNPF. Documentos, 27).| Biblioteca(s): Embrapa Florestas. |
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| 3. | | PEREIRA, J. de P.; ANDROCIOLI FILHO, A.; LEAL, A. C.; RAMOS, A. L. M. Consorciacao de seringueira e cafeeiro em fase terminal e o seu efeito na reducao do periodo de imaturidade do seringal. In: CONGRESSO BRASILEIRO SOBRE SISTEMAS AGROFLORESTAIS, 1.; ENCONTRO SOBRE SISTEMAS AGROFLORESTAIS NOS PAÍSES DO MERCOSUL, 1., 1994, Porto Velho. Anais. Colombo: EMBRAPA-CNPF, 1994. v. 2, p. 103-112. (EMBRAPA-CNPF. Documentos, 27).| Biblioteca(s): Embrapa Florestas. |
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| 4. | | PEREIRA, J. da P.; LEAL, A. C.; RAMOS, A. L. M. Perspectivas da heveicultura no Noroeste do Estado do Parana. In: CONGRESSO BRASILEIRO SOBRE SISTEMAS AGROFLORESTAIS, 1.; ENCONTRO SOBRE SISTEMAS AGROFLORESTAIS NOS PAÍSES DO MERCOSUL, 1., 1994, Porto Velho. Anais. Colombo: EMBRAPA-CNPF, 1994. v. 2, p. 253-254. (EMBRAPA-CNPF. Documentos, 27).| Biblioteca(s): Embrapa Florestas. |
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| 8. | | CARAMONI, P. H.; LEAL, A. C.; MORAIS, H.; HUGO, R. G.; KATHOUNIAN, C. A.; GRODZKI, L.; SILVA, V. P. da. Indicadores biofísicos de sistemas agroflorestais. In: MONTOYA VILCAHUAMAN, L. J.; RIBASKI, J.; MACHADO, A. M. B. (Ed.). Sistemas agroflorestais e desenvolvimento com proteção ambiental: perspectivas, análises e tendências. Colombo: Embrapa Florestas, 2006. p. 115-128.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Florestas. |
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| 9. | | CARAMORI, P. H.; LEAL, A. C.; MORAIS, H.; HUGO, R. G.; KATHOUNIAN. A.; GRODZKI, L.; PORFIRIO-DA-SILVA, V. Indicadores biofísicos de sistemas agroflorestais. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 5., 2004, Curitiba. SAFs: desenvolvimento com proteção ambiental. Colombo: Embrapa Florestas, 2004. Embrapa Florestas. Documentos, 98). Palestra.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Florestas. |
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| 10. | | NAGASHIMA, R. K.; CARDOSO, H. C.; LEAL, A. C. T.; MONTEIRO, E. A. B.; BARROS, M. de L. C.; FELIZZOLA, J. F.; NEU, V. Avaliação dos parâmetros físico-químicos e biológicos da água da chuva em uma ilha no estuário do Rio Pará. In: SIMPÓSIO BRASILEIRO DE RECURSOS HÍDRICOS, 25., 2023, Aracaju. Anais [...]. Porto Alegre: Associação Brasileira de Recursos Hídricos, 2023.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 10 | |
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