After reading this article you will learn about:- 1. Process of Humus Formation 2. Modern Views of Humus Formation 3. Concept. Process of Humus Formation: The formation of humus is strictly a biochemical process and rather complicated one. "Humus is defined as a complex and rather resistant mixture of brown or dark brown amorphous and colloidal substances modified from the [...]
This article provides short notes on clay-humus complex. It is evident that various clay minerals can bind humus substances through some linkages known as clay-humus complex. Many investigators consider that the complexes between humus substances and clays are probably formed by bridging through the exchangeable cations like Ca, Mg and Al. Besides this, they also consider that humus substances penetrate [...]
After reading this article you will learn about the nature and properties of humus. Nature of Humus: Humus is highly colloidal and amorphous in nature. Moreover, its surface area and adsorptive capacity are much higher than that of clay colloids. The cation exchange capacity (CEC) of silicate clays ranges from 8 to 150 C mol (P+) kg-1, whereas the CEC [...]