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| 8. |  | SANZONOWICZ, C.; COUTO, W. Efeito de cálcio, enxofre e outros nutrientes no rendimento e nodulação de Leucaena leucocephala em um solo de cerrado. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 16, n. 6, p. 789-794, nov./dez. 1981 Título em inglês: Effect de calcium, sulphur and other nutrients on dry matter yield and nodulation of Leucaena leucocephala in "Cerrado" soil.| Biblioteca(s): Área de Informação da Sede. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/10/1994 |
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Data da última atualização: |
25/09/1996 |
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Autoria: |
SANZONOWICZ, C. |
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Título: |
Magnitude, interaction and amelioration of subsurface acidity constraints to soybean root growth in solution. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Raleigh: North Carolina State University, 1993. |
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Páginas: |
197p. |
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Idioma: |
Inglês |
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Notas: |
Ph.D. Thesis. |
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Conteúdo: |
A vertical split root technique was used to evaluate effects of H+, AI, Ca, Mg and (CI and SO4=) on root development of soybean (Glycine max (L.) Merr.) var. Ransom.; Soybean shoot growth and root length in a compartment filled with topsolil were not affected by treatments imposed to the subsurface solution. At low pH, low Ca, high Ai concentrations and at absence of B and Zn there was reduced length of all root components,increased lateral root density, and reduced distance from the main root apex to the youngest lateral root. Reduced root growth in solution was associated with low pH, low Ca, high AI, absence of B and Zn, otherwise they stimulated root branching in the soil compartment, and this led to a greater number of roots crossing the membrane with time. Lateral roots had greater sensitivity than main roots to low pH, low Ca and high AI.; In the absence of AI, the Ca/H molar activity ratio was the best predictor of main root growth.; There was no response in main root growth to increased Ca supply when Ca/H ratiowas > 1000. Aluminum toxicity to roots was modified by pH, Ca, Mg and accompanying anions. In the presence of AI, molar activity ratios of Ca/AI and Ca were the best predictions of main root growth. Ferron reagent was likely overestimated reactive AL and failed .... |
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Palavras-Chave: |
Aluminium; Brasil; Constraints; Fertilizacao; Growth; Melhoramento dosolo; Nutritive solution; Plants; Root; Soil amendmants. |
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Thesagro: |
Acidez; Acidez do Solo; Adubação; Alumínio; Boro; Cálcio; Crescimento; Glycine Max; Hidrogênio; Magnésio; Planta; Raiz; Soja; Solo; Solo Ácido; Solução Nutritiva; Subsolo; Sulfato; Zinco. |
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Thesaurus NAL: |
acid soils; acidity; roots; soil pH; soybeans; subsoil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02620nam a2200553 a 4500
001 1556436
005 1996-09-25
008 1993 bl uuuu m 00u1 u #d
100 1 $aSANZONOWICZ, C.
245 $aMagnitude, interaction and amelioration of subsurface acidity constraints to soybean root growth in solution.
260 $aRaleigh: North Carolina State University$c1993
300 $a197p.
500 $aPh.D. Thesis.
520 $aA vertical split root technique was used to evaluate effects of H+, AI, Ca, Mg and (CI and SO4=) on root development of soybean (Glycine max (L.) Merr.) var. Ransom.; Soybean shoot growth and root length in a compartment filled with topsolil were not affected by treatments imposed to the subsurface solution. At low pH, low Ca, high Ai concentrations and at absence of B and Zn there was reduced length of all root components,increased lateral root density, and reduced distance from the main root apex to the youngest lateral root. Reduced root growth in solution was associated with low pH, low Ca, high AI, absence of B and Zn, otherwise they stimulated root branching in the soil compartment, and this led to a greater number of roots crossing the membrane with time. Lateral roots had greater sensitivity than main roots to low pH, low Ca and high AI.; In the absence of AI, the Ca/H molar activity ratio was the best predictor of main root growth.; There was no response in main root growth to increased Ca supply when Ca/H ratiowas > 1000. Aluminum toxicity to roots was modified by pH, Ca, Mg and accompanying anions. In the presence of AI, molar activity ratios of Ca/AI and Ca were the best predictions of main root growth. Ferron reagent was likely overestimated reactive AL and failed ....
650 $aacid soils
650 $aacidity
650 $aroots
650 $asoil pH
650 $asoybeans
650 $asubsoil
650 $aAcidez
650 $aAcidez do Solo
650 $aAdubação
650 $aAlumínio
650 $aBoro
650 $aCálcio
650 $aCrescimento
650 $aGlycine Max
650 $aHidrogênio
650 $aMagnésio
650 $aPlanta
650 $aRaiz
650 $aSoja
650 $aSolo
650 $aSolo Ácido
650 $aSolução Nutritiva
650 $aSubsolo
650 $aSulfato
650 $aZinco
653 $aAluminium
653 $aBrasil
653 $aConstraints
653 $aFertilizacao
653 $aGrowth
653 $aMelhoramento dosolo
653 $aNutritive solution
653 $aPlants
653 $aRoot
653 $aSoil amendmants
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