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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
05/09/2006 |
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Data da última atualização: |
06/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF. |
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Título: |
Plant tissue test for determination of optimum concentration and uptake of nitrogen at different growth stages in lowland rice. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v. 34, n. 1/2, p. 259-270, 2003. |
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DOI: |
https://doi.org/10.1081/CSS-120017430 |
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Idioma: |
Inglês |
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Conteúdo: |
Nitrogen (N) deficiency is one of the most important yield limiting nutrients in lowland rice and plant tissue analysis is an important criteria for diagnosis of nutritional disorders in crop plants. The objective of this study was to determine optimum concentration and uptake of N in lowland rice (Oryza sativa L.) at different growth stages. A field experiment was conducted during 3 consecutive years in the central part of Brazil on a Haplaquepts. Nitrogen rates used were 0, 30, 60, 90, 120, 150, 180, and 210 kg N ha-1. Nitrogen concentration in the shoot at different growth stages was significantly (P<0.01) affected by N fertilization. Optimum N concentration for maximum dry matter yield was 43.4 g kg-1 at initiation of tillering, 34.6 g kg-1 at active tillering, 12.7 g kg-1 at initiation of panicle, 12.8 g kg-1 at booting, 11.0 g kg-1 at flowering, and 6.5 g kg-1 at physiological maturity growth stage. In the grain, the optimum N concentration was 10.9 g kg?1. Nitrogen uptake varied from 16 to 185 kg ha-1 in the shoot from initiation of tillering to flowering. At physiological maturity, N uptake was 71 kg ha-1 in the shoot and 76 kg ha-1 in the grain. Accumulated N at harvest or physiological maturity produced 9545 kg ha-1 straw and 6450 kg ha-1 grain yield. Shoot dry weight increased with the increase in shoot N uptake up to flowering. At harvest, N uptake in the shoot decreased due to translocation to the grain. Rice needs N during its whole growth cycle, however, relatively initiation of panicle, flowering and physiological maturity were the most critical growth stages for N tissue analysis to define optimum N concentration or N uptake for maximum shoot or grain yield. MenosNitrogen (N) deficiency is one of the most important yield limiting nutrients in lowland rice and plant tissue analysis is an important criteria for diagnosis of nutritional disorders in crop plants. The objective of this study was to determine optimum concentration and uptake of N in lowland rice (Oryza sativa L.) at different growth stages. A field experiment was conducted during 3 consecutive years in the central part of Brazil on a Haplaquepts. Nitrogen rates used were 0, 30, 60, 90, 120, 150, 180, and 210 kg N ha-1. Nitrogen concentration in the shoot at different growth stages was significantly (P<0.01) affected by N fertilization. Optimum N concentration for maximum dry matter yield was 43.4 g kg-1 at initiation of tillering, 34.6 g kg-1 at active tillering, 12.7 g kg-1 at initiation of panicle, 12.8 g kg-1 at booting, 11.0 g kg-1 at flowering, and 6.5 g kg-1 at physiological maturity growth stage. In the grain, the optimum N concentration was 10.9 g kg?1. Nitrogen uptake varied from 16 to 185 kg ha-1 in the shoot from initiation of tillering to flowering. At physiological maturity, N uptake was 71 kg ha-1 in the shoot and 76 kg ha-1 in the grain. Accumulated N at harvest or physiological maturity produced 9545 kg ha-1 straw and 6450 kg ha-1 grain yield. Shoot dry weight increased with the increase in shoot N uptake up to flowering. At harvest, N uptake in the shoot decreased due to translocation to the grain. Rice needs N during its whole growth cycle, however, relat... Mostrar Tudo |
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Thesagro: |
Arroz; Nitrogênio; Oryza Sativa. |
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Thesaurus Nal: |
Nutrient uptake; Plant tissues; Rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02384naa a2200205 a 4500
001 1214351
005 2022-05-06
008 2003 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1081/CSS-120017430$2DOI
100 1 $aFAGERIA, N. K.
245 $aPlant tissue test for determination of optimum concentration and uptake of nitrogen at different growth stages in lowland rice.$h[electronic resource]
260 $c2003
520 $aNitrogen (N) deficiency is one of the most important yield limiting nutrients in lowland rice and plant tissue analysis is an important criteria for diagnosis of nutritional disorders in crop plants. The objective of this study was to determine optimum concentration and uptake of N in lowland rice (Oryza sativa L.) at different growth stages. A field experiment was conducted during 3 consecutive years in the central part of Brazil on a Haplaquepts. Nitrogen rates used were 0, 30, 60, 90, 120, 150, 180, and 210 kg N ha-1. Nitrogen concentration in the shoot at different growth stages was significantly (P<0.01) affected by N fertilization. Optimum N concentration for maximum dry matter yield was 43.4 g kg-1 at initiation of tillering, 34.6 g kg-1 at active tillering, 12.7 g kg-1 at initiation of panicle, 12.8 g kg-1 at booting, 11.0 g kg-1 at flowering, and 6.5 g kg-1 at physiological maturity growth stage. In the grain, the optimum N concentration was 10.9 g kg?1. Nitrogen uptake varied from 16 to 185 kg ha-1 in the shoot from initiation of tillering to flowering. At physiological maturity, N uptake was 71 kg ha-1 in the shoot and 76 kg ha-1 in the grain. Accumulated N at harvest or physiological maturity produced 9545 kg ha-1 straw and 6450 kg ha-1 grain yield. Shoot dry weight increased with the increase in shoot N uptake up to flowering. At harvest, N uptake in the shoot decreased due to translocation to the grain. Rice needs N during its whole growth cycle, however, relatively initiation of panicle, flowering and physiological maturity were the most critical growth stages for N tissue analysis to define optimum N concentration or N uptake for maximum shoot or grain yield.
650 $aNutrient uptake
650 $aPlant tissues
650 $aRice
650 $aArroz
650 $aNitrogênio
650 $aOryza Sativa
773 $tCommunications in Soil Science and Plant Analysis$gv. 34, n. 1/2, p. 259-270, 2003.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
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Registro |
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Status |
URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
20/02/2005 |
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Data da última atualização: |
22/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
DRUMOND, M. A.; MORGADO, L. B. |
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Afiliação: |
MARCOS ANTONIO DRUMOND, CPATSA; LUIZ BALBINO MORGADO, CPATSA. |
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Título: |
Espécies arbóreas alternativas para sistemas agroflorestais no semi-árido brasileiro. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Agrossilvicultura, Viçosa, MG, v. 1, n. 1, p. 43-50, 2004. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi descrever as espécies arbóreas: leucena - Leucocephala (Lam.) de Wit., gliricídia - Gliricídia sepium (Jacq.) Steud. e algaroba - Prosopis juliflora (Sw.) DC., caracterizando os principais usos e vantagens que as qualificam como potenciais para o cultivo em sistemas agroflorestais dependentes de água de chuva no semi-árido do Nordeste brasileiro. Elas apresentam potencial superior ao das espécies nativas, como: a) melhor produção de forragem, em quantidade e qualidade, em relação às plantas forrageiras tradicionais e gramíneas introduzidas na região; b) produção de lenha em menor espaço e tempo. |
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Palavras-Chave: |
Leunena; Sistema agroflorestal. |
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Thesagro: |
Algaroba; Espécie; Gliricidia; Leucaena Leucocephala; Prosopis Juliflora. |
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Thesaurus NAL: |
Gliricidia sepium. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/186732/1/Agrossilvicultura-v.1-n.1-p.43-50-2004.pdf
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Marc: |
LEADER 01298naa a2200229 a 4500
001 1155372
005 2018-11-22
008 2004 bl uuuu u00u1 u #d
100 1 $aDRUMOND, M. A.
245 $aEspécies arbóreas alternativas para sistemas agroflorestais no semi-árido brasileiro.
260 $c2004
520 $aO objetivo deste trabalho foi descrever as espécies arbóreas: leucena - Leucocephala (Lam.) de Wit., gliricídia - Gliricídia sepium (Jacq.) Steud. e algaroba - Prosopis juliflora (Sw.) DC., caracterizando os principais usos e vantagens que as qualificam como potenciais para o cultivo em sistemas agroflorestais dependentes de água de chuva no semi-árido do Nordeste brasileiro. Elas apresentam potencial superior ao das espécies nativas, como: a) melhor produção de forragem, em quantidade e qualidade, em relação às plantas forrageiras tradicionais e gramíneas introduzidas na região; b) produção de lenha em menor espaço e tempo.
650 $aGliricidia sepium
650 $aAlgaroba
650 $aEspécie
650 $aGliricidia
650 $aLeucaena Leucocephala
650 $aProsopis Juliflora
653 $aLeunena
653 $aSistema agroflorestal
700 1 $aMORGADO, L. B.
773 $tAgrossilvicultura, Viçosa, MG$gv. 1, n. 1, p. 43-50, 2004.
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