Humic substances represent the major part of organic matter in soil, peat, coal, and sediments, and are important components of dissolved natural organic matter (NOM) in lakes (especially dystrophic lakes), rivers, and sea water.

What are Humic Substances? Humic substances (HS) are complex and heterogeneous mixtures of polydispersed materials formed in soils, sediments, and natural waters by biochemical and chemical reactions during the decay and transformation of plant and microbial remains (a process called humification).

In classical [1] soil science, humus is the dark organic matter in soil that is formed by the decomposition of plant and animal matter. It is a kind of soil organic matter. It is rich in nutrients and retains moisture in the soil. Humus is the Latin word for "earth" or "ground". [2]

Humus is the major soil organic matter component, making up 65% to 75% of the total. Humus assumes an important role as a fertility component of all soils, far in excess of the percentage contribution it makes to the total soil mass.

Humic substances are the organic residues of plant and animal matter that decompose over millennia, forming stable organic compounds known as humus. The major components of humus are humic acids, fulvic acids, and humin, each playing a vital role in soil chemistry and biology.

Oct 10, 2001 · Humic substances, the remarkable brown biomaterials in animals, coals, plants, sediments, soils and waters, are crucial components of the carbon cycle and other life processes.

Humic substances (HS) are dominant components of soil organic matter and are recognized as natural, effective growth promoters to be used in sustainable agriculture. In recent years, many efforts have been made to get insights on the relationship ...

Oct 2, 2015 · Organic matter, the complex mixture of materials derived from living organisms, is considered the origin of humic matter and life on Earth. Over the last few decades, the concept of “humic matter” has become a controversial topic.

Humic substances (HSs) are natural substances classified under the soil organic matter resulting from the decomposition of dead cell materials and metabolic activity of soil microbes, with the potential to be used successfully in the cultivation of various crops (MacCarthy, 2001).

Nov 19, 2020 · Humic substances are a structurally specified fraction of soil organic matter that are thought to be an important component of the biosphere, as they are responsible for many physical and chemical processes in soil.