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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
15/05/2018 |
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Data da última atualização: |
05/02/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, S. M. de; ALMEIDA, R. E. M. de; CIAMPITTI, I. A.; PIEROZAN JUNIOR, C.; LAGO, B. C.; TRIVELIN, P. C. O.; FAVARIN, J. L. |
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Afiliação: |
SILAS MACIEL DE OLIVEIRA, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; IGNACIO A. CIAMPITTI, KANSAS STATE UNIVERSITY; CLOVIS PIEROZAN JUNIOR, ESALQ; BRUNO COCCO LAGO, ESALQ; PAULO CESAR OCHEUZE TRIVELIN, CENA; JOSE LAERCIO FAVARIN, ESALQ. |
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Título: |
Understanding N timing in corn yield and fertilizer N recovery: an insight from an isotopic labeled-N determination. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
PLoS One, v. 13, n. 2, e0192776, Feb. 2018. |
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ISSN: |
1932-6203 |
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DOI: |
10.1371/journal.pone.0192776 |
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Idioma: |
Inglês |
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Conteúdo: |
Early fertilizer nitrogen (N) application on cover crops or their residues during the off-season is a practice adopted in Brazil subtropical conditions under no-tillage corn (Zea mays L.) systems. However, the effect of early N application on yield, plant N content, and N recovery efficiency (NRE) for corn is not yet well documented. Five fertilizer N timings in an oat-corn system were evaluated in two studies utilizing an isotopic-labeled N determination, 15N isotope. The N fertilization timings were: (i) oat tillering, (ii) 15 days before corn planting time, over the oat residues, (iii) at corn planting time, (iv) in-season at the three-leaf growth stage (V3), and (v) in-season split application at V3 and six-leaf (V6) growth stages. Based on the statistical analysis, the N fertilization timings were separated into three groups: 1) N-OATS, designated to N applied at oat; 2) N-PLANT, referred to pre-plant and planting N applications; and 3) N-CORN, designated to in-season corn N applications. Corn yield was not affected by the N fertilization timing. However, the N-CORN N fertilization timings enhanced NRE by 17% and 35% and final N recovery system (plant plus soil) by 16% and 24% all relative to N-OATS and N-PLANT groups, respectively. Overall, N-OATS resulted in the largest N derived from fertilizer (NDFF) amount in the deeper soil layer, in overall a delta of 10 kg N ha-1 relative to the rest of the groups. Notwithstanding corn yield was not affected, early N fertilization under subtropical conditions is not a viable option since NRE was diminished and the non-recovery N increased relative to the in-season N applications. MenosEarly fertilizer nitrogen (N) application on cover crops or their residues during the off-season is a practice adopted in Brazil subtropical conditions under no-tillage corn (Zea mays L.) systems. However, the effect of early N application on yield, plant N content, and N recovery efficiency (NRE) for corn is not yet well documented. Five fertilizer N timings in an oat-corn system were evaluated in two studies utilizing an isotopic-labeled N determination, 15N isotope. The N fertilization timings were: (i) oat tillering, (ii) 15 days before corn planting time, over the oat residues, (iii) at corn planting time, (iv) in-season at the three-leaf growth stage (V3), and (v) in-season split application at V3 and six-leaf (V6) growth stages. Based on the statistical analysis, the N fertilization timings were separated into three groups: 1) N-OATS, designated to N applied at oat; 2) N-PLANT, referred to pre-plant and planting N applications; and 3) N-CORN, designated to in-season corn N applications. Corn yield was not affected by the N fertilization timing. However, the N-CORN N fertilization timings enhanced NRE by 17% and 35% and final N recovery system (plant plus soil) by 16% and 24% all relative to N-OATS and N-PLANT groups, respectively. Overall, N-OATS resulted in the largest N derived from fertilizer (NDFF) amount in the deeper soil layer, in overall a delta of 10 kg N ha-1 relative to the rest of the groups. Notwithstanding corn yield was not affected, early N fertilizati... Mostrar Tudo |
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Thesagro: |
Fertilizante Nitrogenado; Milho; Planta de Cobertura; Plantio Direto; Zea Mays. |
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Thesaurus Nal: |
Corn; Cover crops; Nitrogen fertilizers; No-tillage. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/176845/1/CNPASA-2018-plosone.pdf
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Marc: |
LEADER 02608naa a2200325 a 4500
001 2091450
005 2019-02-05
008 2018 bl uuuu u00u1 u #d
022 $a1932-6203
024 7 $a10.1371/journal.pone.0192776$2DOI
100 1 $aOLIVEIRA, S. M. de
245 $aUnderstanding N timing in corn yield and fertilizer N recovery$ban insight from an isotopic labeled-N determination.$h[electronic resource]
260 $c2018
520 $aEarly fertilizer nitrogen (N) application on cover crops or their residues during the off-season is a practice adopted in Brazil subtropical conditions under no-tillage corn (Zea mays L.) systems. However, the effect of early N application on yield, plant N content, and N recovery efficiency (NRE) for corn is not yet well documented. Five fertilizer N timings in an oat-corn system were evaluated in two studies utilizing an isotopic-labeled N determination, 15N isotope. The N fertilization timings were: (i) oat tillering, (ii) 15 days before corn planting time, over the oat residues, (iii) at corn planting time, (iv) in-season at the three-leaf growth stage (V3), and (v) in-season split application at V3 and six-leaf (V6) growth stages. Based on the statistical analysis, the N fertilization timings were separated into three groups: 1) N-OATS, designated to N applied at oat; 2) N-PLANT, referred to pre-plant and planting N applications; and 3) N-CORN, designated to in-season corn N applications. Corn yield was not affected by the N fertilization timing. However, the N-CORN N fertilization timings enhanced NRE by 17% and 35% and final N recovery system (plant plus soil) by 16% and 24% all relative to N-OATS and N-PLANT groups, respectively. Overall, N-OATS resulted in the largest N derived from fertilizer (NDFF) amount in the deeper soil layer, in overall a delta of 10 kg N ha-1 relative to the rest of the groups. Notwithstanding corn yield was not affected, early N fertilization under subtropical conditions is not a viable option since NRE was diminished and the non-recovery N increased relative to the in-season N applications.
650 $aCorn
650 $aCover crops
650 $aNitrogen fertilizers
650 $aNo-tillage
650 $aFertilizante Nitrogenado
650 $aMilho
650 $aPlanta de Cobertura
650 $aPlantio Direto
650 $aZea Mays
700 1 $aALMEIDA, R. E. M. de
700 1 $aCIAMPITTI, I. A.
700 1 $aPIEROZAN JUNIOR, C.
700 1 $aLAGO, B. C.
700 1 $aTRIVELIN, P. C. O.
700 1 $aFAVARIN, J. L.
773 $tPLoS One$gv. 13, n. 2, e0192776, Feb. 2018.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
15/05/2013 |
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Data da última atualização: |
06/09/2017 |
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Autoria: |
GONZÁLES MOLINA, L.; MORENO PÉREZ, E. del C.; KRISHNAMURTY, L. R.; BAÉZ PÉREZ, A.; MIRELES MIGUEL, A. |
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Afiliação: |
LUCILA GONZÁLES MOLINA, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias -INIFAP; ESAÚ del C. MORENO PÉREZ, Universidad Autónoma Chapingo; LAKSMI REDDIAR KRISHNAMURTY, Universidad Autónoma Chapingo; AURELIO BAÉZ PÉREZ, INIFAP/Campo Experimental Bajío; ACOSTA MIRELES MIGUEL, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias -INIFAP. |
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Título: |
Simulación de los cambios de carbono orgánico del suelo en sistema de cultivo con higuerilla por el modelo RothC. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 11, p. 1647-1654, nov. 2012. |
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ISSN: |
0100-204X |
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Idioma: |
Espanhol |
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Notas: |
Título em inglês: Simulation of soil organic carbon changes in crop systems with castor bean using the RothC model. |
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Conteúdo: |
El objetivo del presente trabajo fue la simulación de los cambios del carbono orgánico del suelo (COS), por el modelo RothC, en razón del cambio de uso de suelo del sistema tradicional ? asociación maíz‑calabaza (TMC) ? a sistemas con higuerilla (Ricinus communis): multiestratos (MUL), callejones (CALL) y monocultivo de higuerilla (HIG). Las simulaciones del COS se hicieron para las profundidades de suelo 0?20 y 0?40 cm, para el periodo de 1980?2040, considerándose como línea base al sistema TMC. Las tasas de cambio de COS estimadas con el RothC, en ambas profundidades de suelo, estuvieron en 0,5?1,2, 0,4?0,8, 0,3?0,5 y 0,04?0,1 Mg ha‑1 de C por año en los sistemas HIG, MUL, CALL y TMC, respectivamente, y fueron consistentes con las reportadas en la literatura. El desempeño del RothC tuvo 89% de eficiencia (EF), con R2=0,9, lo que muestra que este modelo puede usarse con información temporal del COS escasa, información de la historia de uso de suelo y mediciones de la entrada de residuos vegetales aéreos y subterráneos en el suelo. |
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Palavras-Chave: |
Biofuel plants; Cambio de uso de suelo; Planta biocombustible; Secuestro de carbono. |
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Thesagro: |
Ricinus Communis. |
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Thesaurus NAL: |
Carbon sequestration; Land use change. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/82852/1/SIMULACION.pdf
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Marc: |
LEADER 02058naa a2200277 a 4500
001 1957996
005 2017-09-06
008 2012 bl uuuu u00u1 u #d
022 $a0100-204X
100 1 $aGONZÁLES MOLINA, L.
245 $aSimulación de los cambios de carbono orgánico del suelo en sistema de cultivo con higuerilla por el modelo RothC.
260 $c2012
500 $aTítulo em inglês: Simulation of soil organic carbon changes in crop systems with castor bean using the RothC model.
520 $aEl objetivo del presente trabajo fue la simulación de los cambios del carbono orgánico del suelo (COS), por el modelo RothC, en razón del cambio de uso de suelo del sistema tradicional ? asociación maíz‑calabaza (TMC) ? a sistemas con higuerilla (Ricinus communis): multiestratos (MUL), callejones (CALL) y monocultivo de higuerilla (HIG). Las simulaciones del COS se hicieron para las profundidades de suelo 0?20 y 0?40 cm, para el periodo de 1980?2040, considerándose como línea base al sistema TMC. Las tasas de cambio de COS estimadas con el RothC, en ambas profundidades de suelo, estuvieron en 0,5?1,2, 0,4?0,8, 0,3?0,5 y 0,04?0,1 Mg ha‑1 de C por año en los sistemas HIG, MUL, CALL y TMC, respectivamente, y fueron consistentes con las reportadas en la literatura. El desempeño del RothC tuvo 89% de eficiencia (EF), con R2=0,9, lo que muestra que este modelo puede usarse con información temporal del COS escasa, información de la historia de uso de suelo y mediciones de la entrada de residuos vegetales aéreos y subterráneos en el suelo.
650 $aCarbon sequestration
650 $aLand use change
650 $aRicinus Communis
653 $aBiofuel plants
653 $aCambio de uso de suelo
653 $aPlanta biocombustible
653 $aSecuestro de carbono
700 1 $aMORENO PÉREZ, E. del C.
700 1 $aKRISHNAMURTY, L. R.
700 1 $aBAÉZ PÉREZ, A.
700 1 $aMIRELES MIGUEL, A.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 47, n. 11, p. 1647-1654, nov. 2012.
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Embrapa Unidades Centrais (AI-SEDE) |
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