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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
15/01/1999 |
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Data da última atualização: |
15/01/1999 |
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Autoria: |
COUTO, W.; SANZONOWICS, C.; LEITE, G. G. |
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Título: |
Effect of excess water in an oxisol on ammonium, nitrate, iron and manganese availability and nutrient uptake of two tropical forage species. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Plant and Soil, The Hague, v.73, p.159-166, 1983. |
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Idioma: |
Inglês |
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Notas: |
C. Sanzonowicz. |
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Conteúdo: |
A glasshouse experiment was condcted to determine how reduction conditions would affect plant nutrient availability and uptake in red-yellow latosol (Acrustox). Soil analysis showed that the most important change were a marked increase in extractable and in inhibition of nitrification. The grass andropogon (Andropongon gayanus Kunth var. bisquamulatus (Hoechst) Hack) and the legume stylo (Stylosanthes capitata (Vog) responded differently to reducing conditions. Andropogon showed low P, Ca, Mg Fe and Mn content in the shoots but an intense coating of oxidized iron was observed on the surface roots. Stylo plant, on the other hand, showed no iron deposition on the root surfaces a high iron content in the shoots. No decreased P, Ca or Mg content was observed in this case. Is was concluded tha in water saturated soil, reduction took place and plant performance was affected no only by restricted root development but by preventing P, Ca and Mg uptake in Andropogon and increasing Fe uptake stylo plants. It is suggested that restricted P, Ca and Mg uptake by Andropogen would be the result of iron deposition on root surfaces. |
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Palavras-Chave: |
Ammonium; Latossolo vermelho-amarelo; Nitrate; Red-yellow latosol. |
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Thesagro: |
Amônia; Andropogon Gayanus; Cerrado; Ferro; Manganês; Nitrato; Zinco. |
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Thesaurus Nal: |
Ferralsols; iron; manganese; Stylosanthes capitata; zinc. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02073naa a2200349 a 4500
001 1544560
005 1999-01-15
008 1983 bl --- 0-- u #d
100 1 $aCOUTO, W.
245 $aEffect of excess water in an oxisol on ammonium, nitrate, iron and manganese availability and nutrient uptake of two tropical forage species.
260 $c1983
500 $aC. Sanzonowicz.
520 $aA glasshouse experiment was condcted to determine how reduction conditions would affect plant nutrient availability and uptake in red-yellow latosol (Acrustox). Soil analysis showed that the most important change were a marked increase in extractable and in inhibition of nitrification. The grass andropogon (Andropongon gayanus Kunth var. bisquamulatus (Hoechst) Hack) and the legume stylo (Stylosanthes capitata (Vog) responded differently to reducing conditions. Andropogon showed low P, Ca, Mg Fe and Mn content in the shoots but an intense coating of oxidized iron was observed on the surface roots. Stylo plant, on the other hand, showed no iron deposition on the root surfaces a high iron content in the shoots. No decreased P, Ca or Mg content was observed in this case. Is was concluded tha in water saturated soil, reduction took place and plant performance was affected no only by restricted root development but by preventing P, Ca and Mg uptake in Andropogon and increasing Fe uptake stylo plants. It is suggested that restricted P, Ca and Mg uptake by Andropogen would be the result of iron deposition on root surfaces.
650 $aFerralsols
650 $airon
650 $amanganese
650 $aStylosanthes capitata
650 $azinc
650 $aAmônia
650 $aAndropogon Gayanus
650 $aCerrado
650 $aFerro
650 $aManganês
650 $aNitrato
650 $aZinco
653 $aAmmonium
653 $aLatossolo vermelho-amarelo
653 $aNitrate
653 $aRed-yellow latosol
700 1 $aSANZONOWICS, C.
700 1 $aLEITE, G. G.
773 $tPlant and Soil, The Hague$gv.73, p.159-166, 1983.
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