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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
03/12/2018 |
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Data da última atualização: |
09/01/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GARCIA FUENTES, L. F.; SOUZA, L. C. F. de; SERRA, A. P.; RECH, J.; VITORINO, A. C. T. |
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Afiliação: |
Luis Felipe Garcia Fuentes, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia; Luiz Carlos Ferreira de Souza, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia; ADEMAR PEREIRA SERRA, CNPGC; Jerusa Rech, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia; Antonio Carlos Tadeu Vitorino, Universidade Federal da Grande Dourados - UFGD/Faculdade de Agronomia. |
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Título: |
Corn agronomic traits and recovery of nitrogen from fertilizer during crop season and off-season. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, v. 10, p. 1158-1166, Oct. 2018 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Características agronômicas do milho e recuperação de nitrogênio do fertilizante durante a safra e a safrinha. |
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Conteúdo: |
The objective of this work was to evaluate corn agronomic traits in a cultivation subjected to different N rates, during the fall?winter (off-season) and spring?summer crop seasons, and N recovery from fertilizer. The experiment was set up in a randomized complete block design with four replicates, in a 5x2 factorial arrangement, with the following treatments: five N topdressing rates ? 0, 30, 60, 90, and 120 kg ha-1 ?, using urea as source; and two crop seasons, fall?winter and spring?summer. The following variables were determined: plant height, height of the first ear insertion, number of grains per ear, diameter and length of ear, 1,000-grain weight, N concentration in the leaves and grains, grain-protein concentration, grain yield, N recovery from fertilizer, and soil-N supply. Nitrogen rates in the fertilizer in the fall?winter season had no effect on grain yield, although corn agronomic traits showed a greater reliance on fertilizer-N rates in that season than in the spring?summer, which is a season associated to a greater capacity of soil-N supply to plants. The quantification of soil-N supply enabled knowing the nutrient dynamics during the fall?winter and the spring?summer seasons, which may be useful to guide N fertilization of corn. |
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Palavras-Chave: |
De N pelo solo; Manejo da adubação nitrogenada; N-fertilizer management; Nutrição de plantas; Soil-N supply. |
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Thesagro: |
Fertilidade do Solo; Zea Mays. |
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Thesaurus Nal: |
Plant nutrition; Soil fertility. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/187582/1/Corn-agronomic-traits.pdf
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Marc: |
LEADER 02294naa a2200289 a 4500
001 2100588
005 2019-01-09
008 2018 bl uuuu u00u1 u #d
100 1 $aGARCIA FUENTES, L. F.
245 $aCorn agronomic traits and recovery of nitrogen from fertilizer during crop season and off-season.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Características agronômicas do milho e recuperação de nitrogênio do fertilizante durante a safra e a safrinha.
520 $aThe objective of this work was to evaluate corn agronomic traits in a cultivation subjected to different N rates, during the fall?winter (off-season) and spring?summer crop seasons, and N recovery from fertilizer. The experiment was set up in a randomized complete block design with four replicates, in a 5x2 factorial arrangement, with the following treatments: five N topdressing rates ? 0, 30, 60, 90, and 120 kg ha-1 ?, using urea as source; and two crop seasons, fall?winter and spring?summer. The following variables were determined: plant height, height of the first ear insertion, number of grains per ear, diameter and length of ear, 1,000-grain weight, N concentration in the leaves and grains, grain-protein concentration, grain yield, N recovery from fertilizer, and soil-N supply. Nitrogen rates in the fertilizer in the fall?winter season had no effect on grain yield, although corn agronomic traits showed a greater reliance on fertilizer-N rates in that season than in the spring?summer, which is a season associated to a greater capacity of soil-N supply to plants. The quantification of soil-N supply enabled knowing the nutrient dynamics during the fall?winter and the spring?summer seasons, which may be useful to guide N fertilization of corn.
650 $aPlant nutrition
650 $aSoil fertility
650 $aFertilidade do Solo
650 $aZea Mays
653 $aDe N pelo solo
653 $aManejo da adubação nitrogenada
653 $aN-fertilizer management
653 $aNutrição de plantas
653 $aSoil-N supply
700 1 $aSOUZA, L. C. F. de
700 1 $aSERRA, A. P.
700 1 $aRECH, J.
700 1 $aVITORINO, A. C. T.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 53, v. 10, p. 1158-1166, Oct. 2018
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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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: |
25/04/2003 |
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Data da última atualização: |
25/04/2003 |
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Autoria: |
BAYER, C.; MARTIN-NETO, L.; MIELNICZUK, J.; SAAB, S. da C. MILORI, D. M. P.; BAGNATO, V. S. |
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Afiliação: |
UFRGS-Departamento de Solos, Porto Alegre, RS; Embrapa Instrumentação Agropecuária, São Carlos, SP; UEPG-Departamento de Física, Ponta Grossa, PR; USP-Instituto de Física, São Carlos, SP. |
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Título: |
Tillage and cropping system effects on soil humic acid characteristics as determined by electron spin resonance and fluorescence spectroscopies. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Geoderma, Amsterdam, v. 105, p. 81-92, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
long-term (- and 9-year) effects were evaluated of two tillage regimes (conventional tillage: CT; and no-tillage: NT) and two cropping systems (oat/maize: O/M; and oat + vetch / maize + cowpea: O + V/M+C) on characteristics of humic acids (HAs) from surface layer (0 to 25 mm) of subtropical Brazilian Paleudult soil. Generally, soil HA samples from conservation management systems with no soil disturbance (NT) and high crop residue addition (O+V/M+C) showed lowest humification degree, as demonstrated by lowest concentration of semiquinone-type free radicals, determined by electron spin resonance (ESR_, and lowest total fluorescence (TF), which is proportional to area under fluorescence spectrum; however, cropping systems had less effect than tillage regimes on two spectroscopic parameters. Since all HA samples presented a maximum fluorescence emission peak around 518nm, when excited with blue light, we believe that differences in the fluorescence intensity could be attributed to concentration of similar condensed aromatic moiety. This assumption was consistent with strong correlation with stable semiquinone-type free radicals (r=0.84, P<0.01), which are believed to be stabilized in humic substances by condensed aromatic structures. The results showed positive effects of conservation management in evaluating management system quality. |
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Palavras-Chave: |
Aromatic groups; Brazilian soils; Espectroscopia; Fluorescência; Humidade; Humification degree; Semiquinone free radicals. |
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Thesagro: |
Matéria Orgânica; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02191naa a2200277 a 4500
001 1024608
005 2003-04-25
008 2002 bl --- 0-- u #d
100 1 $aBAYER, C.
245 $aTillage and cropping system effects on soil humic acid characteristics as determined by electron spin resonance and fluorescence spectroscopies.
260 $c2002
520 $along-term (- and 9-year) effects were evaluated of two tillage regimes (conventional tillage: CT; and no-tillage: NT) and two cropping systems (oat/maize: O/M; and oat + vetch / maize + cowpea: O + V/M+C) on characteristics of humic acids (HAs) from surface layer (0 to 25 mm) of subtropical Brazilian Paleudult soil. Generally, soil HA samples from conservation management systems with no soil disturbance (NT) and high crop residue addition (O+V/M+C) showed lowest humification degree, as demonstrated by lowest concentration of semiquinone-type free radicals, determined by electron spin resonance (ESR_, and lowest total fluorescence (TF), which is proportional to area under fluorescence spectrum; however, cropping systems had less effect than tillage regimes on two spectroscopic parameters. Since all HA samples presented a maximum fluorescence emission peak around 518nm, when excited with blue light, we believe that differences in the fluorescence intensity could be attributed to concentration of similar condensed aromatic moiety. This assumption was consistent with strong correlation with stable semiquinone-type free radicals (r=0.84, P<0.01), which are believed to be stabilized in humic substances by condensed aromatic structures. The results showed positive effects of conservation management in evaluating management system quality.
650 $aMatéria Orgânica
650 $aSolo
653 $aAromatic groups
653 $aBrazilian soils
653 $aEspectroscopia
653 $aFluorescência
653 $aHumidade
653 $aHumification degree
653 $aSemiquinone free radicals
700 1 $aMARTIN-NETO, L.
700 1 $aMIELNICZUK, J.
700 1 $aSAAB, S. da C. MILORI, D. M. P.
700 1 $aBAGNATO, V. S.
773 $tGeoderma, Amsterdam$gv. 105, p. 81-92, 2002.
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