Chemical attributes of some Queensland acid aoils. II. Relationships between soil and soil solution phase compositions

Abstract

Relationships were sought between soil and soil solution attributes by using the data of Bruce et al. (Part I). There was a strong linear relationship between EC of soil solutions and EC of 1:5 soil : water extracts (r2 = 0.904). In subsoils, the activity of Al3 + in soil solution was dependent on soil solution ionic strength and soil Al saturation, and was described by the following multiple regression equation: loge(Al3+) = -6.97 + 1.96logeIss + 0.0777Alsat.%