The Fertile soil contains lots of microorganisms which decompose the complex dead bodies of animals and plants into simpler substance called Humus.
no it is found in the topsoil or a horizon
The topsoil horizon (A horizon) is nutrient-rich because it contains the most humus, which is a dark, organic material formed from the decayed remains of plants and animals. Humus helps to improve soil fertility, structure, and water retention, making it ideal for plant growth.
soils have different layers present in it as the depth increases. These layers are called horizons. Humus as we all know is present in the top layer of the soil,which is several inches in thickness and is called A horizon.
The C and R horizon
Soil is composed of organic and inorganic parts. Inorganic is weathered rock. Organic is dead or decaying organisms called humus. Fallen leaves are part of what makes up humus. Fallen leaves (as well as all humus) are found in the "O" horizon as well as the "A" horizon.
the O-Horizon is the topmost soil so it has the most humus
The top layer of soil, known as the O horizon or organic layer, is the most newly formed. It consists of organic material such as leaf litter and is constantly being replenished by decaying plant matter.
The uppermost layer of the soil which is the O-horizon, and is called "Humus".
The top layer of soil, called the O horizon or organic layer, contains humus. Humus is a dark, organic material that forms as plant and animal matter decomposes. It is rich in nutrients and helps improve soil structure and fertility.
you are likely to find dark, humus-rich soil in an A-horizon profile because that's where dark soil is found & the composition is the particles of weathered rock materials mixed with humus.
soils have different layers present in it as the depth increases. These layers are called horizons. Humus as we all know is present in the top layer of the soil,which is several inches in thickness and is called A horizon.
AnswerThe O horizon and the A horizon are most rich in humus due to the organic material being highest in those two layers. O is higher than A, though. mjhgbb