Question

Give a geographical reason for each of the following:
I. Alluvial soil differs in texture
II. Black soil does not get leached.
III. Khadar is more fertile than bhangra.

Answer 1

Hint: The majority of alluvial soils come from sediment deposited by the Ganga in the Indo–Gangetic plain, which stretches from Punjab in the west to West Bengal and Assam in the east, as well as the coastal areas of northern Gujarat, the Narmada, and Tapi valleys, which are created by sea waves. Cotton, sugar cane, tobacco, wheat, millets, and oilseed crops are all well-suited to black soil. The best soil type for cotton cultivation is black soil. In addition to cotton, it can be used to grow cereals, oilseeds, citrus fruits and vegetables, tobacco, and sugar cane. Kankers (lime nodules) abound in Bhanger, while khadar soil is made up of fine silt and clay.

Complete answer:
I. The texture of alluvial soil varies because
Since it is a transported soil deposited by rivers, alluvial soil has a different texture. Since alluvial soil is formed by the deposition of sediments by rivers, it varies in texture. The alluvial soil deposited in the upper reaches of the river is coarse and dry, while alluvial soil deposited in the lower reaches of the river is extremely fine and moist.

II. Black soil does not get leached because
Since black soil is moisture retentive, it does not leach. Because of its ability to retain moisture, black soil does not leach. It has a large potential for retaining water.

III. Khadar is more fertile than bhangra due to the fact that
Khadar is fresh alluvium deposited by rivers in their flood plains and replenished annually. Bhangra is older alluvium contained in upland areas above the flood plains that are not renewed by floods.
OR
Khadar is the new aluminum, and it is more fertile than bhangra since new layers of soil are deposited each year during monsoon floods.

Note: Alluvial soils filter sediments and nutrients from the water nearby. They can also eliminate other pollutants from waterways, improving water quality for communities downstream. Black soils are mineral soils with a black surface horizon that is at least 25 cm deep and enriched with organic material. The black surface horizons have a base saturation of around 50%. Bhangar is a kind of alluvial soil that has been around for a long time. Khadar is alluvial soil that has recently been discovered. Away from the river, Bhanger soil can be found. Khadar is situated near the river's mouth.