Humic acid is a principal component of humic substances, which are the major organic constituents of soil (humus), peat, coal, many upland streams, dystrophic lakes, and ocean water.t is produced by biodegradation of dead organic matter. It is not a single acid; rather, it is a complex mixture of many different acids containing carboxyl and phenolate groups so that the mixture behaves functionally as a dibasic acid or, occasionally, as a tribasic acid.
Noteworthy Characteristics. Picea abies, commonly called Norway spruce, is a large pyramidal evergreen conifer that is native to the mountains of northern and central Europe east to the Urals. In its native European habitat, it typically matures to 100-150' (occasionally to 200') tall.
Fact Sheet ST-453October 1994 Picea pungens Figure 1. Middle-aged Colorado Spruce. Colorado Spruce 1Edward F. Gilman and Dennis G. Watson 2 INTRODUCTION Colorado Spruce has a horizontal branching habitand grows taller than 75 feet in its native habitat, butis normally seen at 30 to 50 feet in landscapes (Fig.1).act Sheet ST-453October 1994 Picea pungens Figure 1. Middle-aged Colorado Spruce. Colorado Spruce 1Edward F. Gilman and Dennis G. Watson 2 INTRODUCTION Colorado Spruce has a horizontal branching habitand grows taller than 75 feet in its native habitat, butis normally seen at 30 to 50 feet in landscapes (Fig.1).