It is largely assumed that in 'Terra Rossa' soils the favourable physical properties are mainly determined by the abundance of free iron oxides in the colloidal fractions. These minerals contribute to reduce the aggregates dispersion by 'cementing' the particles together and hence in these soils organic matter (OM) is not considered important as in other soils. However, the content and nature of OM are relevant factors affecting the rate the water affinity of soil aggregates and, in turns, their dispersibility and structural stability. The aim of this preliminary work is to assess how the changes of content and characteristics of OM affect the rate of wetting in soil aggregates of some 'Terra Rossa' soils from Italy.
Preliminary investigation on the role of organic matter on the rate of wetting in some Italian 'Terra Rossa' soils
D'Acqui LP;
1999
Abstract
It is largely assumed that in 'Terra Rossa' soils the favourable physical properties are mainly determined by the abundance of free iron oxides in the colloidal fractions. These minerals contribute to reduce the aggregates dispersion by 'cementing' the particles together and hence in these soils organic matter (OM) is not considered important as in other soils. However, the content and nature of OM are relevant factors affecting the rate the water affinity of soil aggregates and, in turns, their dispersibility and structural stability. The aim of this preliminary work is to assess how the changes of content and characteristics of OM affect the rate of wetting in soil aggregates of some 'Terra Rossa' soils from Italy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
