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| Registros recuperados : 32 | |
| Registros recuperados : 32 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/05/1998 |
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Data da última atualização: |
30/04/2025 |
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Autoria: |
SANZONOWICZ, C.; SMYTH, T. J.; ISRAEL, D. W. |
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Afiliação: |
CLAUDIO SANZONOWICZ, CPAC; NORTH CAROLINA STATE UNIVERSITY; NORTH CAROLINA STATE UNIVERSITY. |
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Título: |
Hydrogen and aluminum inhibition of soybean root extension from limed soil into acid subsurface solutions. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Journal of Plant Nutrition, New York, v. 21, n. 2, p. 387-403, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Soybean [Glycine max (L.) Merr. cv. ‘Ransom'] root elongation under varying concentrations of solution hydrogen (H) and aluminum (Al) was investigated in a vertical split‐root system. Roots extending from a limed and fertilized soil compartment grew for 12 days into a subsurface compartment with solutions adjusted to either different pH values from 3.7 to 5.5 or a factorial combination of pH (4.0,4.6, and 5.2) and Al (0,7.5, 15, and 30 μM) levels. Ionic forms of Al were estimated with GEOCHEM and solution Al was determined with ferron. Boron (B) (18.5 μM) and zinc (Zn) (0.5 μM) were supplied to all solution treatments, in addition to 2000 μM Ca, after preliminary studies at pH 5.2 without Al indicated that their omission inhibited length of tap roots and their laterals in the subsurface compartment. Both H+ and Al inhibited the length of lateral roots more than tap roots. Lateral roots failed to develop on tap roots at pH<4.3 or in treatments with 30 μM Al. Relative tap root length (RRL) among treatments receiving Al correlated with Al as measured by reaction with ferron for 30s. Ferron‐reactive Al was correlated to GEOCHEM‐predicted Al3+ activity (r=0.99). A 50% reduction in RRL occurred with either 2.1 μM Al3+ activity or 4.9 uM ferron‐reactive Al. The absence of shoot and soil‐root biomass differences among solution treatments in the split‐root system indicated that differences in root growth in the subsurface compartment were not directly confounded with differences in top growth. MenosAbstract: Soybean [Glycine max (L.) Merr. cv. ‘Ransom'] root elongation under varying concentrations of solution hydrogen (H) and aluminum (Al) was investigated in a vertical split‐root system. Roots extending from a limed and fertilized soil compartment grew for 12 days into a subsurface compartment with solutions adjusted to either different pH values from 3.7 to 5.5 or a factorial combination of pH (4.0,4.6, and 5.2) and Al (0,7.5, 15, and 30 μM) levels. Ionic forms of Al were estimated with GEOCHEM and solution Al was determined with ferron. Boron (B) (18.5 μM) and zinc (Zn) (0.5 μM) were supplied to all solution treatments, in addition to 2000 μM Ca, after preliminary studies at pH 5.2 without Al indicated that their omission inhibited length of tap roots and their laterals in the subsurface compartment. Both H+ and Al inhibited the length of lateral roots more than tap roots. Lateral roots failed to develop on tap roots at pH<4.3 or in treatments with 30 μM Al. Relative tap root length (RRL) among treatments receiving Al correlated with Al as measured by reaction with ferron for 30s. Ferron‐reactive Al was correlated to GEOCHEM‐predicted Al3+ activity (r=0.99). A 50% reduction in RRL occurred with either 2.1 μM Al3+ activity or 4.9 uM ferron‐reactive Al. The absence of shoot and soil‐root biomass differences among solution treatments in the split‐root system indicated that differences in root growth in the subsurface compartment were not directly confounded with differ... Mostrar Tudo |
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Thesagro: |
Acidez; Alumínio; Calagem; Glycine Max; Hidrogênio; Raiz; Soja; Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/562802/1/Hydrogen-and-aluminum-inhibition-of-soybean-root-extension-from-limed-soil-into-acid-subsurface-solutions.pdf
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Marc: |
LEADER 02215naa a2200241 a 4500
001 1562802
005 2025-04-30
008 1998 bl uuuu u00u1 u #d
100 1 $aSANZONOWICZ, C.
245 $aHydrogen and aluminum inhibition of soybean root extension from limed soil into acid subsurface solutions.$h[electronic resource]
260 $c1998
520 $aAbstract: Soybean [Glycine max (L.) Merr. cv. ‘Ransom'] root elongation under varying concentrations of solution hydrogen (H) and aluminum (Al) was investigated in a vertical split‐root system. Roots extending from a limed and fertilized soil compartment grew for 12 days into a subsurface compartment with solutions adjusted to either different pH values from 3.7 to 5.5 or a factorial combination of pH (4.0,4.6, and 5.2) and Al (0,7.5, 15, and 30 μM) levels. Ionic forms of Al were estimated with GEOCHEM and solution Al was determined with ferron. Boron (B) (18.5 μM) and zinc (Zn) (0.5 μM) were supplied to all solution treatments, in addition to 2000 μM Ca, after preliminary studies at pH 5.2 without Al indicated that their omission inhibited length of tap roots and their laterals in the subsurface compartment. Both H+ and Al inhibited the length of lateral roots more than tap roots. Lateral roots failed to develop on tap roots at pH<4.3 or in treatments with 30 μM Al. Relative tap root length (RRL) among treatments receiving Al correlated with Al as measured by reaction with ferron for 30s. Ferron‐reactive Al was correlated to GEOCHEM‐predicted Al3+ activity (r=0.99). A 50% reduction in RRL occurred with either 2.1 μM Al3+ activity or 4.9 uM ferron‐reactive Al. The absence of shoot and soil‐root biomass differences among solution treatments in the split‐root system indicated that differences in root growth in the subsurface compartment were not directly confounded with differences in top growth.
650 $aAcidez
650 $aAlumínio
650 $aCalagem
650 $aGlycine Max
650 $aHidrogênio
650 $aRaiz
650 $aSoja
650 $aSolo
700 1 $aSMYTH, T. J.
700 1 $aISRAEL, D. W.
773 $tJournal of Plant Nutrition, New York$gv. 21, n. 2, p. 387-403, 1998.
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Embrapa Cerrados (CPAC) |
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