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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
24/05/1996 |
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Data da última atualização: |
24/05/1996 |
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Autoria: |
SPEHAR, C. R.; SOUZA, P. I. de M. de. |
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Título: |
Development sustainable cropping systems for the Brazilian Savannas. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
In: INTERNATIONAL WORKSHOP: moist savannas of Africa: potentials and constraints for crop production, 1994, Cotonou, Republic of Benin. Proceedings. Ibadan, Nigeria: IITA / Rome, Italy: FAO, 1995. |
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Páginas: |
p.325-356. |
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Idioma: |
Inglês |
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Conteúdo: |
The Brazilian savannas (cerrados) cover an area of 200 million ha. and were on the fringe of agriculture in the country until two decades ago. This extensive low input upland rice and pasture system has been replaced by modern soybean production. Late maturing and aluminum tolerance have expanded soybean adaptability in this environment, supplying 50% of the national production. Breeding work on other traditionally cultivated plants is also reviewed and their potential in the production systems is discussed. Research on improving soil fertility, land development and tillage are discussed in relation to soil conservation and organic matter maintenance. Alternative cropping systems which enhance soil fertility are also presented. |
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Palavras-Chave: |
Brasil; Cultural methods; Desenvolvimento sustentado; Sustainability; Sustentabilidade. |
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Thesagro: |
Cerrado; Conservação do Solo; Cultivo do Solo; Fertilidade do Solo; Glycine Max; Manejo do Solo; Matéria Orgânica; Pratica Cultural; Soja. |
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Thesaurus Nal: |
Brazil; cropping systems; organic matter; soil conservation; soil fertility; soil management; soybeans; tillage. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01964naa a2200409 a 4500
001 1551692
005 1996-05-24
008 1995 bl uuuu u00u1 u #d
100 1 $aSPEHAR, C. R.
245 $aDevelopment sustainable cropping systems for the Brazilian Savannas.
260 $c1995
300 $ap.325-356.
520 $aThe Brazilian savannas (cerrados) cover an area of 200 million ha. and were on the fringe of agriculture in the country until two decades ago. This extensive low input upland rice and pasture system has been replaced by modern soybean production. Late maturing and aluminum tolerance have expanded soybean adaptability in this environment, supplying 50% of the national production. Breeding work on other traditionally cultivated plants is also reviewed and their potential in the production systems is discussed. Research on improving soil fertility, land development and tillage are discussed in relation to soil conservation and organic matter maintenance. Alternative cropping systems which enhance soil fertility are also presented.
650 $aBrazil
650 $acropping systems
650 $aorganic matter
650 $asoil conservation
650 $asoil fertility
650 $asoil management
650 $asoybeans
650 $atillage
650 $aCerrado
650 $aConservação do Solo
650 $aCultivo do Solo
650 $aFertilidade do Solo
650 $aGlycine Max
650 $aManejo do Solo
650 $aMatéria Orgânica
650 $aPratica Cultural
650 $aSoja
653 $aBrasil
653 $aCultural methods
653 $aDesenvolvimento sustentado
653 $aSustainability
653 $aSustentabilidade
700 1 $aSOUZA, P. I. de M. de
773 $tIn: INTERNATIONAL WORKSHOP: moist savannas of Africa: potentials and constraints for crop production, 1994, Cotonou, Republic of Benin. Proceedings. Ibadan, Nigeria: IITA / Rome, Italy: FAO, 1995.
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Registro original: |
Embrapa Cerrados (CPAC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Trigo. Para informações adicionais entre em contato com cnpt.biblioteca@embrapa.br. |
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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Circulação/Nível: |
B - 1 |
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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: |
LEADER 02952naa a2200313 a 4500
001 2140142
005 2024-04-22
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.9755/ejfa.2021.v33.i11.2788.$2DOI
100 1 $aFERREIRA, L. A. R.
245 $aWheat nitrogen utilization efficiency and yield as affected by nitrogen management and environmental conditions.$h[electronic resource]
260 $c2021
520 $aAbstract: 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.
650 $aAmmonium nitrate
650 $aSpring wheat
650 $aUrea
650 $aAbacate
650 $aNitrato de Amônio
650 $aTriticum Aestivum
650 $aUréia
653 $aAdubação nitrogenada
653 $aFonte de nitrogênio de fertilizante
653 $aNitrogen source of fertilizer
653 $aNitrogen timing of fertilization
700 1 $aSILVA, S. R.
700 1 $aLOLLATO, R. P.
700 1 $aFERREIRA, E. B.
700 1 $aKÖLLN, O. T.
773 $tEmirates Journal of Food and Agriculture$gv. 33, n. 11, Nov. 2021.
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