HUMIC SUBSTANCE Meaning and
Definition
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Humic substances are complex mixtures of organic compounds that are found in soil, peat, coal, and other natural sources. These substances are formed through the decomposition and transformation of plant and animal materials by microbial and chemical processes over many years. Humic substances are dark in color and are often referred to as brown or black organic matter.
These substances are composed of various organic compounds, including humic acids, fulvic acids, and humin. Humic acids are high molecular weight and are not soluble in water at low pH levels. Fulvic acids, on the other hand, have lower molecular weight and are soluble in water at all pH levels. Humin is the least soluble fraction of humic substances and consists of highly complex and stable structures.
Humic substances play a crucial role in soil fertility and overall soil health. They improve soil structure by enhancing aggregation, increasing water holding capacity, and promoting aeration. Additionally, they enhance nutrient availability and uptake by plants, as they can chelate or bind with essential elements, making them more soluble and easily absorbed by plants. Humic substances also increase the cation exchange capacity of soils, allowing them to retain and release nutrients as needed.
In summary, humic substances are complex mixtures of organic compounds found in soil and other natural sources. They play a vital role in soil fertility, enhancing soil structure, nutrient availability, and overall soil health.
Common Misspellings for HUMIC SUBSTANCE
- gumic substance
- bumic substance
- numic substance
- jumic substance
- uumic substance
- yumic substance
- hymic substance
- hhmic substance
- hjmic substance
- himic substance
- h8mic substance
- h7mic substance
- hunic substance
- hukic substance
- hujic substance
- humuc substance
- humjc substance
- humkc substance
- humoc substance
- hum9c substance
Etymology of HUMIC SUBSTANCE
The word "humic" originates from the Latin word "humus", which means earth or ground. "Humus" also refers to the dark organic material present in soil, formed by the decomposition of plant and animal matter. Therefore, the term "humic substance" refers to the organic compounds found in soil, specifically those derived from the decomposition of organic matter.
