A soil test for aluminium toxicity in acidic subsoils of yellow earths in Western Australia [wheatlands]
1991
Carr, S.J. | Ritchie, G.S.P. (Western Australia Univ., Nedlands. Soil Science and Plant Nutrition) | Porter, W.M. (Avon Agricultural Research Centre, Northam (Australia))
53 field experiments were conducted at 34 sites in 5 regions over 3 years to determine the relationship between yield of wheat and each of several indices of Al toxicity. The concentration of Al in KCl extracts of the 15-25 cm soil layer was well correlated with yield in one region, provided that the fertiliser treatments of the soils were similar. The ratio Al:Na in KCl extract was a better predictor than Al alone over regions and soils with differing fertiliser treatments.
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