The answer to the following question-"Leaching is most common in the. TOPSOIL,SUBSOIL,ROCK FRAGMENTS,PARENT ROCK" is-
TOPSOIL
Explanation:
Leaching most common in the topsoil.
Leaching process
Leaching is a naturally occurring process .
Leaching is the loss or extraction of certain materials from a carrier into a liquid or applying a small amount of excess irrigation to avoid soil salinity,
the loss of water-soluble plant nutrients from the soil; .by which constituents of a solid material are released into a contacting water phase.
TOPSOIL
Topsoil is the upper layer of soil.
It has the highest concentration of organic matter and microorganisms and
is where most of the Earth's biological soil activity occurs.
For leaching soil must be more porous , the more it is ,the easier it is for chemicals to pass through.
Pure sand is probably the best leaching type but not for garden plants.
In general, the more sand our garden soil has, the more is the leaching
Leaching occurs as excess water removes water-soluble nutrients out of the soil, by runoff or drainage. Leaching is an environmental problem for agricultural professionals whether chemical-heavy fertilisers or chemicals are swept out and find their way into water bodies.
Sandy or shallow soils have higher leaching potential than clay, loam or deep soils. Whenever water input exceeds the soil's ability to hold water against drainage (field capacity), there is potential for leaching.
The leaching of substances into water is a process involved in weathering, which is when rain and wind cause a chemical reaction to occur in the surface of rock which breaks off pieces of that rock to be transported away by moving water.
Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always a solvent), and may refer to: Leaching (agriculture), the loss of water-soluble plant nutrients from the soil; or applying a small amount of excess irrigation to avoid soil salinity.
Leaching is a process in which water-soluble substances are washed out from the soil. These water-soluble substances may be nutrients, fertilizers or even pesticides.
Currently, leaching primarily describes the process of water carrying soluble substances or small particles through soil or rock. Although this process seems trivial, leaching is one of the key processes of the Critical Zone, controlling the rate and direction in which compounds move.
laterite soil found in the north-eastern hills is India is an example if leaching soil. It develops insitu as a result of leaching due to heavy rains. hence it is found on the top of hills and on hill slopes. they are also found in Kerala, Western Ghats and Chhota Nagpur.
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