1984
DOI: 10.1590/s0006-87051984000200005
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O pH das soluções nutritivas no comportamento de cultivares de trigo à toxicidade de alumínio

Abstract: (1) Com verba suplementar do Acordo do Trigo entre as Cooperativas de Produtores Rurais do Vale do Paranapanema e a Secretaria de Agricultura e Abastecimento, por meio do Instituto Agronômico. Recebido para publicação a 26 de marco de 19S2.(2) Com bolsa de suplementação do CNPq. RESUMOForam estudados nove cultivares de trigo em soluções nutritivas contendo quatro níveis de alumínio (0, 5, 10 e 20mg/litro) combinados com três níveis de pH (4,0, 5,0 e 6,0). A tolerância foi medida pela capacidade de as raízes pr… Show more

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Cited by 9 publications
(12 citation statements)
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“…These results are consistent with those of Camargo (1984) who found a reduction trend in wheat root growth as pH increased from 4.0 to 6.0 when cultivated in complete nutrient solution.…”
Section: Resultssupporting
confidence: 92%
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“…These results are consistent with those of Camargo (1984) who found a reduction trend in wheat root growth as pH increased from 4.0 to 6.0 when cultivated in complete nutrient solution.…”
Section: Resultssupporting
confidence: 92%
“…This conflicts with the situation where a constant amount of aluminum is supplied in the nutrient solution and pH is changed from 4.0 to 6.0, and where reasonable root growth of wheat seedlings takes place in pH 6.0 (Camargo, 1984). The hydrolysis theory may elucidate this, since a 10-fold trivalent aluminum (Al 3+ ) compared to bivalent form (AlOH 2+ ) occurs under pH 4.0; 3.1-fold at pH 4.5; while at pH 5.0 the trivalent and bivalent ionic species are practically equivalent (Foy & Fleming, 1978).…”
Section: Resultsmentioning
confidence: 88%
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“…The harmful effect of aluminum on the crops is not new information, because there is several CAMARGO (1984), the negative influence of aluminum depends on the pH and the toxicity of certain concentration of this element decreases with the pH elevation, when close to 7.0, decreasing consequently the solubility of this element. However, this study was of great importance to be aware of the tolerance of lettuce to this element, being a crop little adapted to environments of low fertility.…”
Section: --------------------%-----------------------mentioning
confidence: 99%
“…Num estudo envolvendo nove cultivares de trigo em soluções nutritivas contendo quatro níveis de Al tóxico combinados com três níveis de pH em ausência de fósforo, foi demonstrado que o sintoma de toxicidade do alumínio -paralisação do crescimento radicular -ficou acentuado pelo aumento da concentração de alumínio na solução ou pela diminuição do pH para todos os cultivares estudados (CAMARGO, 1984). Aparentemente, a tolerância a determinada concentração de alumínio é uma característica antes relativa do que absoluta, por depender da concentração de sais, temperatura e pH das soluções nutritivas em estudo (ALI, 1973;CAMARGO & OLIVEIRA 1981;CAMARGO et alii, 1981;CAMARGO, 1983;CAMAR-GO, 1984).…”
Section: Introductionunclassified