Question

Name the soil which:
i. Is good for cultivation of sugarcane.
ii. Is acidic in nature.
iii. Occurs ex-situ.

Answer 1

Hint:Soil is a combination of organic matter gases, liquids, minerals, organisms and it supports life. Depending upon the location, its texture and its composition, there are many different types of soil.

Complete answer:
The four main types of soil in India are black soil, red soil, laterite soil and alluvial soil.
i.The denudation of lava flow rocks results in the formation of black soil. They contain large quantities of lime, aluminium, potassium and they are deficient in phosphorus, nitrogen and organic matter. Black soil is black in colour and hence it is called as the black soil. The other name of black soil is regur soil. This soil has originated from the solidification of basic lava within the volcanic activity. The black soil is more suitable for growing cotton and sugarcane. It retains moisture and becomes sticky.
ii.Laterite soil is rich in iron and aluminium and it is both a rock and a soil. The laterite soil is formed by weathering of soil. It can also be formed due to intense leaching occurring during the periods of heavy rainfall. The disadvantage of the laterite soil is that it is very acidic and it is generally coarse in texture and cannot retain moisture.
iii.Alluvial soil is a loose soil or sediment which has been eroded or reshaped by water in some form. Ex situ soil is the soil that can be carried by different agents and deposited away from the place where it is formed. One such example is alluvial soil.
Therefore, the black soil is good for cultivation of sugarcane. Laterite soil is acidic in nature and alluvial soil occurs ex-situ.

Note:
Red soil grows in warm climates and it is the third largest group of soils found in India. Alluvial soil is regarded as the most fertile soil.Red soil is a type of soil that develops in a temperate, moist climate under deciduous or mixed forest, having thin organic and organic-mineral layers.