Humus has a characteristic black or dark brown color and is an accumulation of organic carbon. Besides the three major soil horizons of (A) surface/topsoil, (B) subsoil, and (C) substratum, most soils have …

The meaning of HUMUS is a brown or black complex variable material resulting from partial decomposition of plant or animal matter and forming the organic portion of soil.

Oct 15, 2024 · Humus is decayed organic matter that is crucial for plant growth. Learn what humus consists of, how to make it, and how to add it to your garden soil.

Jul 23, 2025 · Humus is a dark, mostly black or dark brown, organic material formed from the decomposition of animal and plant matter in soil. Humus also helps in plant growth and nutrient cycling.

HUMUS definition: the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth. See examples of humus used in a sentence.

Oct 19, 2023 · Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up. Leaf litter covers a …

The accumulation of epiphytic dead organic matter (humus and semi-humus) is influenced by opposing processes.

humus, nonliving, finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances. Humus, which ranges in colour from brown to black, consists of about 60 percent …

humus in American English (ˈhjuːməs, or, often ˈjuː-) noun the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth

Jul 17, 2025 · The term “humus” is derived from the Latin word “humus,” meaning “earth” or “ground.” It was first used by the German scientist Justus von Liebig in the 19th century to describe the dark, …