Write the main characteristics of Black soil and alluvial soil
Answers
Answer:
Characteristics of Alluvial Soils
They are immature and have weak profiles due to their recent origin.
Most of the soil is Sandy and clayey soils are not uncommon.
Pebbly and gravelly soils are rare. ...
The soil is porous because of its loamy (equal proportion of sand and clay) nature.
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Answer:
Black soil:-
Black soils are mineral soils which have a black surface horizon, enriched with organic carbon that is at least 25 cm deep. ... A base saturation in the black surface horizons ≥50%.
Black soil is classified on the basis of the thickness of layers into three sub groups:
*Shallow Black Soil: Shallow Black Soil this type of soil found with thickness less than 30 cm. ...
*Medium Black Soil: soil thickness ranges between 30 cm and 100 cm. ...
*Deep Black Soil: Thickness is more than 1 meter.
The characteristics of black soil:-
*Clayey texture and are highly fertile.
*Rich in calcium carbonate, magnesium, potash, and lime but poor in nitrogen and phosphorous.
*Highly retentive of moisture, extremely compact and tenacious when wet.
*Contractible and develops deep wide cracks on drying.
Alluvial soil:-
Alluvium is loose, unconsolidated soil or sediment that has been eroded, reshaped by water in some form, and redeposited in a non-marine setting. Alluvium is typically made up of a variety of materials, including fine particles of silt and clay and larger particles of sand and gravel.
Major characteristics of alluvial soil are:
*It is formed by the deposition of the river load as it flows from its upper to its lower course.
*It is light and porous, therefore easily tillable.
*It is a fertile soil as it is rich in minerals, especially potash and lime.
Explanation:
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