Question

Explain the main characteristic features of



a. Alluvial soil



b. Black soil



c. Laterite soil



d. Arid soil

Answer 1

Answer:

Characteristics of Alluvial Soils

1)They are immature and have weak profiles due to their recent origin.

2(Most of the soil is Sandy and clayey soils are not uncommon.

3)Pebbly and gravelly soils are rare. ...

The soil is porous because of its loamy (equal proportion of sand and clay) nature.

characteristics of Black soil

1)It is fine textured and clayey in nature.

2) It has high amounts of lime, iron, magnesium and generally low quantities of phosphorus, nitrogen and organic matter.

3) It is black in colour since it is formed from weathered lava rocks.

Characteristics of laterite soil

(i) The soils are acidic in nature, coarser and crumbly in texture.

(ii) Due to lack of nitrogen, potassium and organic elements, the laterite soils lack fertility, and are not suitable for cultivation.

characteristic of arid soil

1)Arid soil is water deficient as the soil is occupied by kankar (nodular calcium carbonate) which restricts the infiltration of water. ....

2)Arid soil mostly lacks humus and moisture and thus evaporation is very fast.

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Answer 2

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Alluvial Soil

• 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.

Black Soil

• It is fine textured and clayey in nature. It has high amounts of lime, iron, magnesium and generally low quantities of phosphorus, nitrogen and organic matter. It is black in colour since it is formed from weathered lava rocks.

Laterite Soil

• (i) The soils are acidic in nature, coarser and crumbly in texture. (ii) Due to lack of nitrogen, potassium and organic elements, the laterite soils lack fertility, and are not suitable for cultivation.

Arid Soil

• It is sandy in texture. It is saline in nature and lacks humus and moisture. Arid soils contain a substantial amount of soluble salts. It is alkaline in nature because there is no rain to wash soluble salts.