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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pesca e Aquicultura. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
04/08/2015 |
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Data da última atualização: |
04/08/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PIEROZAN JUNIOR, C.; FAVARIN, J. L.; ALMEIDA, R. E. M. de; OLIVEIRA, S. M. de; LAGO, B. C.; TRIVELIN, P. C. O. |
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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. |
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Título: |
Uptake and allocation of nitrogen applied at low rates to soybean leaves. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Plant and Soil, The Hague, v. 393, n. 1/2, p. 83-94, Aug. 2015. |
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DOI: |
10.1007/s11104-015-2468-7 |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Foliar nitrogen; N derived from fertilizer. |
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Thesagro: |
Glycine max; Nitrogênio; Soja. |
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Thesaurus Nal: |
Nutrient use efficiency. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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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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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
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URL |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
02/10/2018 |
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Data da última atualização: |
17/12/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BERNARDO, M. P.; GUIMARÃES, G. G. F.; MAJARON, V. F.; OLIVEIRA, C. R. de. |
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Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Controlled release of phosphate from layered double hydroxide structures: dynamics in soil and application as smart fertilizer. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
ACS Sustainable Chemistry & Engineering, v. 6, n. 4, p. 5152-5161, 2018. |
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Páginas: |
5152-5161 |
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DOI: |
10.1021/acssuschemeng.7b04806 |
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Idioma: |
Inglês |
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Palavras-Chave: |
Controlled release; Memory effect; Nanofertilizer; Slow release. |
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Thesaurus NAL: |
Hydrotalcite; Soil pH. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 00789naa a2200241 a 4500
001 2096700
005 2018-12-17
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1021/acssuschemeng.7b04806$2DOI
100 1 $aBERNARDO, M. P.
245 $aControlled release of phosphate from layered double hydroxide structures$bdynamics in soil and application as smart fertilizer.$h[electronic resource]
260 $c2018
300 $a5152-5161
650 $aHydrotalcite
650 $aSoil pH
653 $aControlled release
653 $aMemory effect
653 $aNanofertilizer
653 $aSlow release
700 1 $aGUIMARÃES, G. G. F.
700 1 $aMAJARON, V. F.
700 1 $aOLIVEIRA, C. R. de
773 $tACS Sustainable Chemistry & Engineering$gv. 6, n. 4, p. 5152-5161, 2018.
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