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Registro Completo |
Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
Data corrente: |
04/08/2015 |
Data da última atualização: |
04/08/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PIEROZAN JUNIOR, C.; FAVARIN, J. L.; ALMEIDA, R. E. M. de; OLIVEIRA, S. M. de; LAGO, B. C.; TRIVELIN, P. C. O. |
Afiliação: |
CLOVIS PIEROZAN JUNIOR, ESALQ; JOSE LAERCIO FAVARIN, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; SILAS MACIEL DE OLIVEIRA, ESALQ; BRUNO COCCO LAGO, ESALQ; PAULO CESAR OCHEUZE TRIVELIN, CENA. |
Título: |
Uptake and allocation of nitrogen applied at low rates to soybean leaves. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Plant and Soil, The Hague, v. 393, n. 1/2, p. 83-94, Aug. 2015. |
DOI: |
10.1007/s11104-015-2468-7 |
Idioma: |
Inglês |
Conteúdo: |
Background and aims: Foliar nitrogen (N) fertilization of soybean crops is a practice that is being adopted in Brazil because soybean crops require N during the reproductive stages and certain soils have low N availability and reduced biological N fixation (BNF). Thus, low rates of leaf N are being used without scientific evidence for supporting the practice. The aim of this study was to analyze the uptake efficiency and allocation of N provided by foliar applications of low rates of urea-N during the soybean reproductive stage. Methods: The study was conducted in Taquarituba, Sao Paulo State (SP), Brazil during the 2012/13 and 2013/14 crop seasons. Rates of 0, 650, 1300 and 1950 g N ha−1 applied at the R1 or R3 growth stage were analyzed. Grain yield, N extraction by the grains, shoots (including leaves + stems + pod husks), total plants (grains + shoots), N derived from fertilizer (NDFF), 15N accumulation in grains or shoots, and fertilizer N-use efficiency by plant (NUE) were measured using 15N. Results: Foliar application of 1950 g ha−1 of N increased the N content in the shoots by up to 22 kg ha−1. Regardless of the year, the application during R3 yielded the highest NDFF values in the grains that were, on average, 20 % higher than in R1. However, the highest mean values of NDFF and NUE were obtained from the R3 or R1 applications when there was less rainfall. Despite the high NUE (64 %), foliar applications of low rates of N on soybean crops did not increase the seed yield. Conclusions: Most of the fertilizer N was allocated to the grains, especially when applied at the R3 growth stage. The NUE of the soybean crop ranged from 51 to 72 %, and it was dependent on the phenological stage of the crop and climate conditions during crop growth in addition to the timing of fertilizer application. Foliar application of low rates of N on soybean crops did not increase seed yield. MenosBackground and aims: Foliar nitrogen (N) fertilization of soybean crops is a practice that is being adopted in Brazil because soybean crops require N during the reproductive stages and certain soils have low N availability and reduced biological N fixation (BNF). Thus, low rates of leaf N are being used without scientific evidence for supporting the practice. The aim of this study was to analyze the uptake efficiency and allocation of N provided by foliar applications of low rates of urea-N during the soybean reproductive stage. Methods: The study was conducted in Taquarituba, Sao Paulo State (SP), Brazil during the 2012/13 and 2013/14 crop seasons. Rates of 0, 650, 1300 and 1950 g N ha−1 applied at the R1 or R3 growth stage were analyzed. Grain yield, N extraction by the grains, shoots (including leaves + stems + pod husks), total plants (grains + shoots), N derived from fertilizer (NDFF), 15N accumulation in grains or shoots, and fertilizer N-use efficiency by plant (NUE) were measured using 15N. Results: Foliar application of 1950 g ha−1 of N increased the N content in the shoots by up to 22 kg ha−1. Regardless of the year, the application during R3 yielded the highest NDFF values in the grains that were, on average, 20 % higher than in R1. However, the highest mean values of NDFF and NUE were obtained from the R3 or R1 applications when there was less rainfall. Despite the high NUE (64 %), foliar applications of low r... Mostrar Tudo |
Palavras-Chave: |
Foliar nitrogen; N derived from fertilizer. |
Thesagro: |
Glycine max; Nitrogênio; Soja. |
Thesaurus Nal: |
Nutrient use efficiency. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02755naa a2200265 a 4500 001 2021309 005 2015-08-04 008 2015 bl uuuu u00u1 u #d 024 7 $a10.1007/s11104-015-2468-7$2DOI 100 1 $aPIEROZAN JUNIOR, C. 245 $aUptake and allocation of nitrogen applied at low rates to soybean leaves.$h[electronic resource] 260 $c2015 520 $aBackground and aims: Foliar nitrogen (N) fertilization of soybean crops is a practice that is being adopted in Brazil because soybean crops require N during the reproductive stages and certain soils have low N availability and reduced biological N fixation (BNF). Thus, low rates of leaf N are being used without scientific evidence for supporting the practice. The aim of this study was to analyze the uptake efficiency and allocation of N provided by foliar applications of low rates of urea-N during the soybean reproductive stage. Methods: The study was conducted in Taquarituba, Sao Paulo State (SP), Brazil during the 2012/13 and 2013/14 crop seasons. Rates of 0, 650, 1300 and 1950 g N ha−1 applied at the R1 or R3 growth stage were analyzed. Grain yield, N extraction by the grains, shoots (including leaves + stems + pod husks), total plants (grains + shoots), N derived from fertilizer (NDFF), 15N accumulation in grains or shoots, and fertilizer N-use efficiency by plant (NUE) were measured using 15N. Results: Foliar application of 1950 g ha−1 of N increased the N content in the shoots by up to 22 kg ha−1. Regardless of the year, the application during R3 yielded the highest NDFF values in the grains that were, on average, 20 % higher than in R1. However, the highest mean values of NDFF and NUE were obtained from the R3 or R1 applications when there was less rainfall. Despite the high NUE (64 %), foliar applications of low rates of N on soybean crops did not increase the seed yield. Conclusions: Most of the fertilizer N was allocated to the grains, especially when applied at the R3 growth stage. The NUE of the soybean crop ranged from 51 to 72 %, and it was dependent on the phenological stage of the crop and climate conditions during crop growth in addition to the timing of fertilizer application. Foliar application of low rates of N on soybean crops did not increase seed yield. 650 $aNutrient use efficiency 650 $aGlycine max 650 $aNitrogênio 650 $aSoja 653 $aFoliar nitrogen 653 $aN derived from fertilizer 700 1 $aFAVARIN, J. L. 700 1 $aALMEIDA, R. E. M. de 700 1 $aOLIVEIRA, S. M. de 700 1 $aLAGO, B. C. 700 1 $aTRIVELIN, P. C. O. 773 $tPlant and Soil, The Hague$gv. 393, n. 1/2, p. 83-94, Aug. 2015.
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Embrapa Pesca e Aquicultura (CNPASA) |
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Registros recuperados : 67 | |
3. | | MOREIRA, F. R. B. Goiaba: direto na seiva. Cultivar HF, Pelotas, v. 2, n. 8, p. 27-28, jun./jul. 2001. Número especial.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Embrapa Semiárido. |
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4. | | MOREIRA, F. R. B. Goiaba: fitossanidade. Brasília: Embrapa Informação Tecnológica; Petrolina: Embrapa Semi-Árido, 2001. 63 p. il.color. (Frutas do Brasil, 18).Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Semiárido. |
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6. | | MOREIRA, F. R. B. Pragas. In: MOUCO, M. A. do C. (Ed.). Cultivo da mangueira. Petrolina: Embrapa Semi-Árido, 2004. (Sistemas de Produção, 2) O nome da autora do artigo está errado. O sobrenome da mesma é BARBOSA.Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Semiárido. |
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10. | | MOREIRA, W. A.; HENRIQUE NETO, D.; MOREIRA, F. R. B. Avaliação do controle químico na malformação da mangueira irrigada, no Submédio do Vale do rio São Francisco, Brasil. In: O AGRONEGÓCIO manga: produção e mercado. Vitória da Conquista: Universidade Estadual do Sudoeste da Bahia, DFZ, 2002. 1 CD-ROM. Trabalhos apresentados no I Simpósio Latino Americano sobre Produção de Manga, 1999, Vitória da Conquista, BA.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Semiárido. |
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11. | | MOREIRA, F. R. B.; LIMA, M. F. (ed.). A cultura da goiaba. 2. ed. rev. e ampl. Brasília, DF: Embrapa Informação Tecnológica: Petrolina: Embrapa Semiárido, 2010. 180 p. (Coleção plantar, 66). Autores: Adriane Luciana da Silva, Alessandra Monteiro S. Mendes, Anderson Ramos de Oliveira, Beatriz Aguiar Jordão Paranhos, Carlos Antonio Fernades Santos, Davi José Silva, Débora Costa Bastos, Diógenes da Cruz Batista, Flávia Rabelo...Tipo: Autoria/Organização/Edição de Livros |
Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Semiárido; Embrapa Unidades Centrais. |
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12. | | MOREIRA, W. A.; LOPES, D. B.; MOREIRA, F. R. B. Eficiência de fungicidas no controle de fungos que depreciam a qualidade de frutos de manga. Fitopatologia Brasileira, Brasília, DF, v. 27, p.222, ago. 2002. Suplemento. Edição dos Resumos do 35 Congresso Brasileiro de Fitopatologia, Recife, 2002.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Semiárido. |
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15. | | OLIVEIRA, M. D. de; CONCEIÇÃO, J. L. A.; MOREIRA, F. R. B.; LIMA, L. L. de. Controle do Psilídeo-da-goiabeira (Triozoida limbata) com silício, nim e imidacloprido. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 22., 2008, Uberlândia. Ciência, tecnologia e inovação : anais. Viçosa, MG: UFV, 2008. 1 CD-ROM. Resumo 840-2.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Semiárido. |
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16. | | MOREIRA, F. R. B.; CARVALHO, G. K. de L; GONZAGA NETO, L. Controle da cochonilha Ortézia Orthezia praelonga (Hemiptera: Ortheziidae), em aceroleira, medidas culturais e calda sulfocálcica, no Vale do São Francisco. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 21., 2006, Recife. Resumos... Recife: SEB; UFRPE, 2006. 1 CD-ROM.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Semiárido. |
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18. | | MOREIRA, F. R. B.; FERNANDES, P. M.; MOREIRA, W. A.; SANTOS, G. Efeito de inseticidas na infeccao natural da lagarta-da-soja por Nomuraea Rileyi. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 32, n. 2, p. 133-136, fev. 1997.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Embrapa Semiárido. |
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Registros recuperados : 67 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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