1966
DOI: 10.1097/00010694-196603000-00006
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Effect of Chemical Activity of Soil Solution Aluminum on Cotton Root Penetration of Acid Subsoils

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Cited by 163 publications
(52 citation statements)
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“…Isso porque, mesmo em solução, o sulfato de cálcio tem esse efeito (Adams & Lund, 1966). Assim, é possível que o aumento de sulfato nas camadas mais profundas do solo, ricas em alumínio (Quadro 2), tenha proporcionado condições mais favoráveis ao desenvolvimento radicular.…”
Section: Profundidade De 0-20 CMunclassified
See 1 more Smart Citation
“…Isso porque, mesmo em solução, o sulfato de cálcio tem esse efeito (Adams & Lund, 1966). Assim, é possível que o aumento de sulfato nas camadas mais profundas do solo, ricas em alumínio (Quadro 2), tenha proporcionado condições mais favoráveis ao desenvolvimento radicular.…”
Section: Profundidade De 0-20 CMunclassified
“…O gesso, ou sulfato de cálcio, atua sobre dois fatores que impedem ou dificultam o desenvolvimento radicular das plantas cultivadas: o excesso de alumínio e a deficiência de cálcio. Mesmo em soluções nutritivas que contêm alumínio, o sulfato de cálcio tem efeito favorável sobre o crescimento radicular, pela redução do efeito tóxico do alumínio (Adams & Lund, 1966) ou pela influência favorável do cálcio (Alva et al, 1986;Cameron et al, 1986).…”
Section: Introductionunclassified
“…Conventional tests for Al toxicity in soils (pH, exchangeable AI, percentage Al saturation of CEC (cation exchange capacity), and salt extractable AI) are not useful in predicting Al toxicity problems across a wide range of soils (Adams and Lund, 1966;Wright, 1989); the soil solution usually provides more accurate information (Baker, 1988;Bruce et aI., 1988). However, for soils having similar parent materials and clay minerals, pH alone or absolute levels of Al extracted by KCl or other salts may be useful in predicting Al toxicity for a given plant (Blarney and Nathanson, 1977;McCormick and Amendale, 1983;Manrique, 1986).…”
Section: Tests For Aluminum Toxicity In Soilsmentioning
confidence: 99%
“…It is generally agreed that some measure of Al activity is more indicative of potential toxicity than concentrations of water soluble or exchangeable Al or percentage Al saturation of soil CEC (Adams and Lund, 1966). These investigators found that the critical Al activity which limited root growth in a soil solution was the same as in a nutrient solution (>0.15 X 10-5 M).…”
Section: Identifying Aluminum Toxic Ionic Species In Acid Soilsmentioning
confidence: 99%
“…In soils of low pH, Ca concentrations tend to be low and cations such as A13+ and Fe 3+ are more available (Mengel & Kirkby 1982). The solubility of A1 in soils begins to increase substantially below pH 5.5 (Coleman et al 1958;McCart & Kamprath 1965;Grime & Hodgson 1969), and plant growth has been found to be negatively correlated with various indices of plant-available A1 in soils (Moschler et al 1960;Adams & Lund 1966;Hoyt & Nyborg 1972;Hume et al 1988).…”
Section: Introductionmentioning
confidence: 99%