Structure of arid soils are generally
Arid soils range from red to brown in colour. They are generally sandy in structure and saline in nature.
Khadar soils are found in:
Khadar soils are coarse grained soils deposited by the rivers.
In arid and semi-arid areas, lands unsuitable for cultivation should be converted into
In arid and semi-arid areas, efforts should be made to protect cultivable lands from encroachment by sand dunes through developing shelter belts of trees and agro-forestry. Lands not suitable for cultivation should be converted into pastures for grazing.
The state having very little alluvial soil area is
Arunachal Pradesh has a high concentration of red and yellow soil.
Black soils are best for growing
Black soils are best for growing cotton. These soils are also known as the ‘Regur Soil’ or the ‘Black Cotton Soil’. The black soils are generally clayey, deep and impermeable.
Ravines are widespread in the
A region with a large number of deep gullies or ravines is called a badland topography. Ravines are widespread in the Chambal basin. Besides this, they are also found in Tamil Nadu and West Bengal. The country is losing about 8,000 hectares of land to ravines every year.
Cultivation should never be done on the slope gradient of
Lands with a slope gradient of 15-25 per cent should not be used for cultivation. If at all, the land is to be used for agriculture, terraces should carefully be made.
Which of the following soils contain a large proportion of sodium, potassium and magnesium?
Usara soil is also known as saline soil. It contains a large proportion of sodium, potassium and magnesium. It has salts largely because of the dry climate and poor drainage.
Which of the following states have very little alluvial soil area?
Alluvial soils are widespread in the northern plains and the river valleys. These soils coverabout 40 per cent of the total area of the country. Arunachal Pradesh has very little alluvial soil area.
Most fertile soils are found in the
Because in delta region fine silt is deposited by the rivers,it has most fertile soils.