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Abstract Water soluble salts accumulated at the soybean ( Glycine max L.) root‐soil interface and in the rhizosphere soil when salts, dissolved in the soil solution, moved to the root surface at a greater rate than they were absorbed by the roots. Salt accumulation increased with increase of salt concentration in the soil solution and transpiration rate. The average salt accumulation decreased with increase in the average age of the roots.
Riley et al. (Thu,) studied this question.