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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: |
17/10/1994 |
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Data da última atualização: |
10/05/2024 |
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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: |
Effect of P, Ca, and Mg concentrations in solution culture on growth and uptake of these ions by rice. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
Agronomy Journal, v. 68, n. 5, p. 726-732, Sept./Oct. 1976. |
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DOI: |
https://doi.org/10.2134/agronj1976.00021962006800050010x |
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Idioma: |
Inglês |
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Conteúdo: |
Nutrient requirements during various phases of plant growth are affected by many factors. Greater knowledge of this subject is warranted by the intensification of agriculture. The present study was undertaken to determine the effect of varying concentrations of P, Ca, and Mg on the growth and uptake patterns of these ions by rice (Oryza sativa L.). Rice plants were grown in culture solution of these ions. Minimum concentrations required for maximum growth were 25 μM P, 250μM Ca, and 33 μM Mg respectively. At higher P concentrations a linear absorption isotherm was obtained with respect to P content in the plant tissue. The critical concentration of P in the tops of 100-day old plants was 0.4%. To support maximum growth, Ca content varied from 242 to 2,373 μg-atoms/five plants for 25 to 125 days of growth. Maximum growth was characterized by a relative absorption (IM) rate ranging from 14 to 320 μg-atoms of Ca/g dry weight of roots/day during the period of cultivation. To support maximum growth, plants must absorb 13.7, 7.7, 4.3, 4.0, and 2.4 μg of magnesium per g fresh weight of roots/hour at 25, 50, 75, 100, and 125 days of growth respectively. With the advancement of age, P and Ca content in plants and their utilization quotients were increased but relative growth rate and rate of Ca and Mg absorption decreased. |
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Palavras-Chave: |
Continuous low rate; Critical percentage; Relative growth rate; Uptake efficiency; Utilization quotient. |
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Thesagro: |
Arroz; Nutriente; Oryza Sativa. |
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Thesaurus Nal: |
Nutrient uptake; Rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02123nam a2200241 a 4500
001 1197550
005 2024-05-10
008 1976 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.2134/agronj1976.00021962006800050010x$2DOI
100 1 $aFAGERIA, N. K.
245 $aEffect of P, Ca, and Mg concentrations in solution culture on growth and uptake of these ions by rice.$h[electronic resource]
260 $aAgronomy Journal, v. 68, n. 5, p. 726-732, Sept./Oct. 1976.$c1976
520 $aNutrient requirements during various phases of plant growth are affected by many factors. Greater knowledge of this subject is warranted by the intensification of agriculture. The present study was undertaken to determine the effect of varying concentrations of P, Ca, and Mg on the growth and uptake patterns of these ions by rice (Oryza sativa L.). Rice plants were grown in culture solution of these ions. Minimum concentrations required for maximum growth were 25 μM P, 250μM Ca, and 33 μM Mg respectively. At higher P concentrations a linear absorption isotherm was obtained with respect to P content in the plant tissue. The critical concentration of P in the tops of 100-day old plants was 0.4%. To support maximum growth, Ca content varied from 242 to 2,373 μg-atoms/five plants for 25 to 125 days of growth. Maximum growth was characterized by a relative absorption (IM) rate ranging from 14 to 320 μg-atoms of Ca/g dry weight of roots/day during the period of cultivation. To support maximum growth, plants must absorb 13.7, 7.7, 4.3, 4.0, and 2.4 μg of magnesium per g fresh weight of roots/hour at 25, 50, 75, 100, and 125 days of growth respectively. With the advancement of age, P and Ca content in plants and their utilization quotients were increased but relative growth rate and rate of Ca and Mg absorption decreased.
650 $aNutrient uptake
650 $aRice
650 $aArroz
650 $aNutriente
650 $aOryza Sativa
653 $aContinuous low rate
653 $aCritical percentage
653 $aRelative growth rate
653 $aUptake efficiency
653 $aUtilization quotient
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Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 538 | |
| 48. |  | FAGERIA, N. K. Manejo da calagem e adubação do arroz. In: BRESEGHELLO, F.; STONE, L. F. (Ed.). Tecnologia para o arroz de terras altas. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 1998. p. 67-78.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 49. | | FAGERIA, N. K. Manejo do cálcio e do magnésio. In: FAGERIA, N. K.; STONE, L. F.; SANTOS, A. B. dos. Manejo da fertilidade do solo para o arroz irrigado. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2003. p. 143-152.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 56. | | FAGERIA, N. K. Química de solos de várzea. In: SIMPÓSIO AVANÇADO DE SOLOS E NUTRIÇÃO DE PLANTAS, 2., 1989, Piracicaba. Anais... Piracicaba: Fundação Cargill, 1989. p. 91-114.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 538 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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