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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. |
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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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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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Registro original: |
Embrapa Trigo (CNPT) |
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Tipo/Formato |
Classificação |
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Registro |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
10/12/2021 |
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Data da última atualização: |
16/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
AIRES, E. S.; ARAGÃO, C. A.; DANTAS, B. F.; RODRIGUES, J. D.; ONO, E. O. |
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Afiliação: |
EDUARDO SANTANA AIRES; CARLOS ALBERTO ARAGÃO; BARBARA FRANCA DANTAS, CPATSA; JOÃO DOMINGOS RODRIGUES; ELIZABETH ORIKA ONO. |
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Título: |
Light intensity modulates the accumulation of carbohydrates, antioxidant enzymes and production of iceberg lettuce under tropical conditions. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Horticulturae, v. 7, n. 12, 553, 2021. |
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DOI: |
https://doi.org/10.3390/horticulturae7120553 |
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Idioma: |
Inglês |
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Conteúdo: |
High solar radiation in tropical regions can affect the development, physiology, and biochemistry of plants. Our aim with this research was to evaluate the biochemical responses and production of iceberg lettuce cultivars under environments with different shadings. An experiment under field conditions was installed in a 4 × 4 factorial scheme. Four cultivars of iceberg lettuce (Great Lakes, Winslow, Delicia, and Balsamo) and four environments with different shadings (three types of shading screens: red, ChromatiNet®, and black; and treatment under the full sun) were evaluated. Forty-five days after transplanting, the plants were harvested, and the biomass was weighed to obtain the fresh consumable part (FCP) and the biochemical parameters: total soluble sugar (TSS), reducing sugar (RS), and the activity of SOD, CAT, and POD. We found that shading modulates biochemical and productive responses of iceberg lettuce, and the main microclimatic factor related to these responses was solar radiation. We observed a negative correlation between RS and FCP. The solar radiation between 16 and 18 MJ·m−2 ·day−1 , observed in the environments with a black screen and ChromatiNet®, promoted the highest activity of the SOD enzyme and average levels of TSS and RS, providing higher FCP of the cultivars Delícia and Balsamo in high temperatures period. |
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Palavras-Chave: |
Alface americana; Aparafusamento. |
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Thesagro: |
Açúcares; Alface; Fisiologia; Lactuca Sativa; Sombreamento. |
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Thesaurus NAL: |
Lettuce. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02207naa a2200277 a 4500
001 2137518
005 2021-12-16
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/horticulturae7120553$2DOI
100 1 $aAIRES, E. S.
245 $aLight intensity modulates the accumulation of carbohydrates, antioxidant enzymes and production of iceberg lettuce under tropical conditions.$h[electronic resource]
260 $c2021
520 $aHigh solar radiation in tropical regions can affect the development, physiology, and biochemistry of plants. Our aim with this research was to evaluate the biochemical responses and production of iceberg lettuce cultivars under environments with different shadings. An experiment under field conditions was installed in a 4 × 4 factorial scheme. Four cultivars of iceberg lettuce (Great Lakes, Winslow, Delicia, and Balsamo) and four environments with different shadings (three types of shading screens: red, ChromatiNet®, and black; and treatment under the full sun) were evaluated. Forty-five days after transplanting, the plants were harvested, and the biomass was weighed to obtain the fresh consumable part (FCP) and the biochemical parameters: total soluble sugar (TSS), reducing sugar (RS), and the activity of SOD, CAT, and POD. We found that shading modulates biochemical and productive responses of iceberg lettuce, and the main microclimatic factor related to these responses was solar radiation. We observed a negative correlation between RS and FCP. The solar radiation between 16 and 18 MJ·m−2 ·day−1 , observed in the environments with a black screen and ChromatiNet®, promoted the highest activity of the SOD enzyme and average levels of TSS and RS, providing higher FCP of the cultivars Delícia and Balsamo in high temperatures period.
650 $aLettuce
650 $aAçúcares
650 $aAlface
650 $aFisiologia
650 $aLactuca Sativa
650 $aSombreamento
653 $aAlface americana
653 $aAparafusamento
700 1 $aARAGÃO, C. A.
700 1 $aDANTAS, B. F.
700 1 $aRODRIGUES, J. D.
700 1 $aONO, E. O.
773 $tHorticulturae$gv. 7, n. 12, 553, 2021.
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