Humic substances (HS) are relatively recalcitrant colored organic compounds naturally formed during long-term decomposition and transformation of biomass residues. The color of humic substances …

Humic acid is a group of molecules that bind to, and help plant roots receive, water and nutrients. High humic acid levels can dramatically increase yields. Humic acid deficiency can prevent farmers and …

People sometimes use humic acid to stimulate the immune system, for infections, and many other purposes, but there is no good scientific evidence to support any use.

Aug 1, 2025 · Humic acids are natural organic compounds found in soil and water, formed from the breakdown of organic matter. These complex molecules play a significant role in ecological systems, …

Nov 10, 2025 · Explore the definition, natural origins, and critical dual functions of humic substances in both soil ecology and human health.

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 …

Humic substances are complex and heterogeneous mixtures of polydispersed materials formed by biochemical and chemical reactions during the decay and transformation of plant and microbial …

Humic acid is rich in carbon, hydrogen, oxygen, nitrogen, and sulfur, and is known for its ability to improve soil fertility and promote plant growth. It is often used in agriculture, horticulture, and …

Its structure is unlike that of proteins or carbohydrates, the two most common organic polymers found in biological material; instead, humic acid can be characterized as a loose assembly of aromatic …

Apr 1, 2023 · Humic substances (HSs), derived from degraded plant remains and found ubiquitously in nature, are an important source of organic matter. The application of HSs to soil enhances essential …