EFFECT OF SYSTEM MINERAL AND ORGANIC-MINERAL FERTILIZATION ON THE HUMUS CONTENT AND HUMUS FRACTIONS IN MOLLIC FLUVISOLS

2005, 6 (4)   p. 577-582

TONI TOMOV, NEDIALKA ARTINOVA

Abstract

The effect of system mineral and organic-mineral fertilization on the humus content and humus fractions in mollic fluvisols in condition of long-term fi eld experiment was studied. Forty years period of organic-mineral fertilization (N420P260K380 + 27 t/dka manure) have had stabilizing effect on humus content in the soil. The system mineral fertilization led to a slight decrease of soil humus. The humus type was not infl uenced from the fertilization.

Keywords

humus, soil nutrients, fertilization systems, mollic fl uvisols

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