Question

3. What is soil profile? Discuss the various
horizons in soil profile.​

Answer 1

Answer:

please mark as briliant answer

organic-matter decay, weathering of minerals to smaller particles, and chemical reactions. There are three primary soil horizons, called master horizons. They are A, B, and C. These are part of a system for naming soil horizons in which each layer is identified by a code: O, A, E, B, C, and R.

various horizons

1. Organic - The organic layer (also called the humus layer) is a thick layer of plant remains such as leaves and twigs.
2. Topsoil - Topsoil is considered the "A" horizon. ...
3. Subsoil - Subsoil is considered the "B" horizon

Answer 2

If you visit a site, Where are has been dug for building a house or looking in a soil Peat , on a road side cut you will see various layers in the soil. These layers are called soil horizons . The arrangement of these Horizons in a soil is known as soil profile.

♦ SOIL HORIZONS :

Each soil Horizon is different from the other in texture , colour , chemical composition and depth.

★ O HORIZONS ------› It is that top organic layer of the soil mostly made up of leaf litter and humus this horizon is rich in humus.

★ A HORIZONS ------› This players are also called as top soil and is found below the O horizon. Seed germinate and plant grow in this dark coloured Layer. It is made up of humus ( decomposed organic matter ) mixed with mineral particles.

Sometimes , leaching of minerals and clay content takes place in the lower part of A horizon as water drips throw this region. This process of leaching is called evaluation .

★ B HORIZONS -------› It is also called the sub soil. This layer is Beneath The A horizon and about the C horizon. It contains clay and mineral deposits like Iron and Aluminium oxide. It receives them , from layers above it , when mineralised water drips from the top soil.

★ R HORIZONS --------› This consists of the unweathered rock layer , called the Bedrock. It exist beneath all the other layers.