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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Mandioca e Fruticultura; Embrapa Meio-Norte; Embrapa Semiárido. |
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Data corrente: |
14/09/2001 |
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Data da última atualização: |
19/04/2013 |
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Autoria: |
RIBEIRO, J. V.; MATTOS, P. L. P. de; SIQUEIRA, L. A. |
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Afiliação: |
JOSÉ VALMOR RIBEIRO; PEDRO LUIZ PIRES DE MATTOS; LUIZ ALBERTO SIQUEIRA. |
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Título: |
Competição de espaçamento em mandioca Manihot esculenta, Crantz no Estado de Sergipe. |
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Ano de publicação: |
1974 |
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Fonte/Imprenta: |
Aracaju: Superintendência da Agricultura e Produção-SUDAP, 1974. |
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Páginas: |
12p. |
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Idioma: |
Português |
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Conteúdo: |
Um dos problemas que afeta a cultura da mandioca e, sem dúvida, o tradicionalismo, responsável pelos baixos índices de produtividade. O plantio desordenado com a utilização de espaçamentos muitas vezes irracionais, empregados por muitos lavradores, sem perspectiva de mecanização, tem levado a pesquisa a estudar os melhores processos de cultivo para a mandioca visando, além das possibilidades de aplicação de máquinas em tratos culturais, o maior rendimentos em raizes e aumento econômico dos rendimentos por hectare. Segundo o trabalho de competição de espaçamento, inserido em contribuição ao estudo das plantas alimentares no Estado da Bahia, teve como melhor espaçamento o de 1,00 m x 1,00 m com 27,8 t/ha, apesar de não diferir estatisticamente dos demais. Em Sergipe SUDAP/SUDENE/IPEAL/EMBRAPA tem procurado cumprir tais objetivos nas micro-regiões produtores do Estado. |
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Palavras-Chave: |
Brasil; Cultivo; Mandioc; Sergipe. |
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Thesagro: |
Espaçamento; Mandioca; Pratica Cultural; Produtividade; Rendimento. |
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Categoria do assunto: |
--
A Sistemas de Cultivo |
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Marc: |
LEADER 01585nam a2200253 a 4500
001 1636734
005 2013-04-19
008 1974 bl uuuu u0uu1 u #d
100 1 $aRIBEIRO, J. V.
245 $aCompetição de espaçamento em mandioca Manihot esculenta, Crantz no Estado de Sergipe.
260 $aAracaju: Superintendência da Agricultura e Produção-SUDAP$c1974
300 $a12p.
520 $aUm dos problemas que afeta a cultura da mandioca e, sem dúvida, o tradicionalismo, responsável pelos baixos índices de produtividade. O plantio desordenado com a utilização de espaçamentos muitas vezes irracionais, empregados por muitos lavradores, sem perspectiva de mecanização, tem levado a pesquisa a estudar os melhores processos de cultivo para a mandioca visando, além das possibilidades de aplicação de máquinas em tratos culturais, o maior rendimentos em raizes e aumento econômico dos rendimentos por hectare. Segundo o trabalho de competição de espaçamento, inserido em contribuição ao estudo das plantas alimentares no Estado da Bahia, teve como melhor espaçamento o de 1,00 m x 1,00 m com 27,8 t/ha, apesar de não diferir estatisticamente dos demais. Em Sergipe SUDAP/SUDENE/IPEAL/EMBRAPA tem procurado cumprir tais objetivos nas micro-regiões produtores do Estado.
650 $aEspaçamento
650 $aMandioca
650 $aPratica Cultural
650 $aProdutividade
650 $aRendimento
653 $aBrasil
653 $aCultivo
653 $aMandioc
653 $aSergipe
700 1 $aMATTOS, P. L. P. de
700 1 $aSIQUEIRA, L. A.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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Tipo/Formato |
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Voltar
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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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Embrapa Trigo (CNPT) |
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