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| 95. |  | FAGERIA, N. K.; BARBOSA FILHO, M. P.; RANGEL, P. H. N.; CUTRIM, V. dos A. Efeitos do Fe na absorção de nutrientes, praticas de manejo e avaliação de cultivares de arroz para tolerância a Fe. In: REUNIãO SOBRE FERRO EM SOLOS INUNDADOS, 1., 1987, Goiânia. Anais. Goiânia: EMBRAPA-CNPAF, 1988. p. 97-112. (EMBRAPA-CNPAF. Documentos, 22).| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 129 | |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
11/03/2004 |
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Data da última atualização: |
04/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARBOSA FILHO, M. P.; SNYDER, G. H.; ELLIOTT, C. L.; DATNOLL, L. E. |
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Afiliação: |
MOREL PEREIRA BARBOSA FILHO, CNPAF; GEORGE H. SNYDER; CURTIS L. ELLIOTT; LAWRENCE E. DATNOFF. |
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Título: |
Evaluation of soil test procedures for determining rice-available silicon. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 32, n. 11-12, p. 1779-1792, 2001. |
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DOI: |
10.1081/CSS-120000249 |
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Idioma: |
Inglês |
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Conteúdo: |
Soil testing for silicon (Si) in the predominantly organic soils of the Everglades Agricultural Area has not been sufficiently investigated. The objective of this study was to identify a suitable Si extraction method for these soils for rice (Oryza sativa L.). Twenty-two surface soil samples were collected from 10 farms. Of these 22, 10 samples were from fields that had received Si fertilization at some time in the past, and 12 were from fields that had not received Si fertilization. Rice was grown for 80 days in each soil in the greenhouse. Subsequently, the straw and immature panicles were harvested, dried, weighed, and analyzed for Si. In the laboratory, seven different methods were used for extracting Si from the soils. The methods were: (1) 0.5 M acetic acid extract, 10:25 (soil:extract, v/v ratio), (2) citric acid 1%, 1:10, (3) demineralized water, 1:10, (4) TRIS buffer pH 7.0, 1:10, (5) water-bath shaking (Batch method) 1:10 v/v ratio plus cation exchange resin (Amberlite IRC-50 H type), (6) soil incubated with water for 1 week at 40°C, 1:6 (Incubation method), and (7) soil incubated with water for 4 weeks at 30°C, 1:4 (Extended Incubation method). The concentration of dissolved Si in soil extracts from all methods was determined colorimetrically. Soil Si values were correlated with straw Si and panicle Si content. Among the methods studied, extraction with 0.5 M acetic acid appeared most suitable for evaluating Si availability, followed by extraction with citric acid at 1%. These methods provided the best correlations with rice straw and panicle Si percentage (r2 = 0.899***, r2 = 0.768***, and r2 = 0.839***, r2 = 0.774*** respectively). These methods, being rapid and effective in extracting Si in comparison to other methods, appear to be the most suitable for routine soil testing for Si in the Everglades Agricultural Area in South Florida. MenosSoil testing for silicon (Si) in the predominantly organic soils of the Everglades Agricultural Area has not been sufficiently investigated. The objective of this study was to identify a suitable Si extraction method for these soils for rice (Oryza sativa L.). Twenty-two surface soil samples were collected from 10 farms. Of these 22, 10 samples were from fields that had received Si fertilization at some time in the past, and 12 were from fields that had not received Si fertilization. Rice was grown for 80 days in each soil in the greenhouse. Subsequently, the straw and immature panicles were harvested, dried, weighed, and analyzed for Si. In the laboratory, seven different methods were used for extracting Si from the soils. The methods were: (1) 0.5 M acetic acid extract, 10:25 (soil:extract, v/v ratio), (2) citric acid 1%, 1:10, (3) demineralized water, 1:10, (4) TRIS buffer pH 7.0, 1:10, (5) water-bath shaking (Batch method) 1:10 v/v ratio plus cation exchange resin (Amberlite IRC-50 H type), (6) soil incubated with water for 1 week at 40°C, 1:6 (Incubation method), and (7) soil incubated with water for 4 weeks at 30°C, 1:4 (Extended Incubation method). The concentration of dissolved Si in soil extracts from all methods was determined colorimetrically. Soil Si values were correlated with straw Si and panicle Si content. Among the methods studied, extraction with 0.5 M acetic acid appeared most suitable for evaluating Si availability, followed by extraction with citric acid... Mostrar Tudo |
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Thesagro: |
Arroz; Oryza Sativa; Silício; Solo. |
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Thesaurus NAL: |
rice; silicon. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02583naa a2200241 a 4500
001 1211955
005 2022-04-04
008 2001 bl uuuu u00u1 u #d
024 7 $a10.1081/CSS-120000249$2DOI
100 1 $aBARBOSA FILHO, M. P.
245 $aEvaluation of soil test procedures for determining rice-available silicon.$h[electronic resource]
260 $c2001
520 $aSoil testing for silicon (Si) in the predominantly organic soils of the Everglades Agricultural Area has not been sufficiently investigated. The objective of this study was to identify a suitable Si extraction method for these soils for rice (Oryza sativa L.). Twenty-two surface soil samples were collected from 10 farms. Of these 22, 10 samples were from fields that had received Si fertilization at some time in the past, and 12 were from fields that had not received Si fertilization. Rice was grown for 80 days in each soil in the greenhouse. Subsequently, the straw and immature panicles were harvested, dried, weighed, and analyzed for Si. In the laboratory, seven different methods were used for extracting Si from the soils. The methods were: (1) 0.5 M acetic acid extract, 10:25 (soil:extract, v/v ratio), (2) citric acid 1%, 1:10, (3) demineralized water, 1:10, (4) TRIS buffer pH 7.0, 1:10, (5) water-bath shaking (Batch method) 1:10 v/v ratio plus cation exchange resin (Amberlite IRC-50 H type), (6) soil incubated with water for 1 week at 40°C, 1:6 (Incubation method), and (7) soil incubated with water for 4 weeks at 30°C, 1:4 (Extended Incubation method). The concentration of dissolved Si in soil extracts from all methods was determined colorimetrically. Soil Si values were correlated with straw Si and panicle Si content. Among the methods studied, extraction with 0.5 M acetic acid appeared most suitable for evaluating Si availability, followed by extraction with citric acid at 1%. These methods provided the best correlations with rice straw and panicle Si percentage (r2 = 0.899***, r2 = 0.768***, and r2 = 0.839***, r2 = 0.774*** respectively). These methods, being rapid and effective in extracting Si in comparison to other methods, appear to be the most suitable for routine soil testing for Si in the Everglades Agricultural Area in South Florida.
650 $arice
650 $asilicon
650 $aArroz
650 $aOryza Sativa
650 $aSilício
650 $aSolo
700 1 $aSNYDER, G. H.
700 1 $aELLIOTT, C. L.
700 1 $aDATNOLL, L. E.
773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 32, n. 11-12, p. 1779-1792, 2001.
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