Evolution of Humic Fractions in Calcimagnesic Soils And Brown Isohumic Soils Amended With Compost and Manure

Compost Science & Utilization, (2007), Vol. 15, No. 4, 253-256

Imen Ben Mahmoud(1), Mounir Medhioub(1), Hafedh Rigane(1) and Khaled Medhioub(2)
(1) Sfax Faculty of Science, Earth Sciences Department, Sfax, Tunisia
(2) Sfax Preparatory Institute of Engineering Study, Biology-Geology Department, Sfax, Tunisia

The composting process of organic wastes consists of the bioconversion of biologically unstable wastes to stabilized products for application to soils. This study was carried out on different soils (brown isohumic soils in Sfax region in southern Tunisia and calcimagnesic soils in Korba region in northern Tunisia). The mineralization process of organic matter is more important in isohumic soils, showing less tenors of fine fractions than in calcimagnesic soils. The study of different humic fractions in amended soils shows that humic acid tenors and the polymerization rates are linked to soil nature. Calcimagnesic soils ensure a more important humification than isohumic soils.

Copyright 2007, The JG Press, Inc.