Natural aggregates of a Swiss Braunerde and synthetic soil aggregates produced with several polysaccharides were subjected to various chemical treatments designed to destroy polysaccharides or other soil constituents. The water stability of the aggregates was determined before and after the treatment to evaluate the rǒle of the constituent destroyed. The properties of the agent responsible for the aggregation of soil are discussed. The contrasting behaviour of natural and synthetic aggregates provides evidence against polysaccharides being the agents responsible for the natural aggregation and it appears that more than one agent may be involved in this.
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Mehta et al. (1960) studied this question.
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