Humus content in Serbia to the mapping investigated pitch

Abstract

Soil is one of the most important resources of each state. The research in this study was conducted in order to preserve this very important resource. Humic substances have a positive effect of water-air maintenance and total biological properties of the soil which have a direct impact on plant nutrition and and in the first place on the nutrition of plants with nitrogen. Humus content is the basic parameter of soil fertility. The paper analyzes humus content of 21 localities in central Serbia. Total is examined 5.313 samples. Results on humus content indicate that there are soils from insufficiently humus to extremely humus. In 92% of the examined soil samples are weak and medium humus, 7% of the soil is very humus a only 1% insufficiently humus.