Soil pH, extractable aluminum and tree growth on acid minesoils

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Abstract
Paper birch [Betula papyrifera] and hybrid poplar [Populus] were grown in acid mine soils amended with different rates and types of lime. Growth of the trees was correlated with soil pH, Ca, Mg, K, P and 3 measures of extractable Al-1 N KCl, 0.01 M CaCl2 and H2O extractable Al. Correlations between soil pH and extractable Al and between the 3 measures of extractable Al were also determined. Soil pH accounted for the largest share of the total variation in root and shoot growth of both species over all soils. Correlations between tree growth and extractable Al for all soils combined were low and generally insignificant. Significant correlations were obtained between soil pH and extractable Al and between the 3 measures of extractable Al, however, the relationships varied among soils.

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