what is deep black soil
Answers
Answer:
Deep black soil is productive due to high proportion of clay and humus. The organic matter present in the soil is contributed by the death and decay of living organisms. These are the richest in nutrients and therefore these soils are the most fertile.
Answer:
Deep black soil is productive due to high proportion of clay and humus. The organic matter present in the soil is contributed by the death and decay of living organisms. These are the richest in nutrients and therefore these soils are the most fertile.
complete answer :
Clay content in deep black soil ranges from 40 to 60 per cent. Black soil is also abundant in humus. Slow absorption causes the black soil to retain the moisture for a longer time. This helps the crops, especially,
the rain-fed ones, to survive the scarcity of water in dry seasons. - The black soil retains moisture to a great extent. It swells and becomes sticky when wet in the rainy
season. However, in the hot dry season, the moisture evaporates which leads to the shrinkage of soil.
Broad and deep cracks appear which allows oxygenation of the soil in the deepest parts. This leads to an extraordinary increase in the fertility of the soil.
- As the soil is fertile, it is suitable for crops such as cotton, sugarcane, citrus fruits etc.
- The presence of magnetite, compounds of iron and aluminium, and humus are responsible for its black colouration.