Soil Science

Major soil of North India is Alluvial soil and mostly in northern plains or northern Indian states like Punjab, Haryana, Uttar Pradesh, Bihar etc.

Regur soil is suitable for cotton cultivation. It is a black coloured soil. It is said be perfect for cotton cultivation. It is rich in iron content.

The soil is a living system. It takes millions of years to form soil upto a few cm in depth. Relief, parent rock or bedrock, climate, vegetation and other forms of life and time are important factors in the formation of soil.

The thin layer of grainy substance covering the surface of the earth is called soil. In the upper most layer of the earth it it is available in the loosey material form. Soil is made up of organic matter, minerals and weathered rocks found on the earth. This happens through the process of weathering.

Red soil derives its distinctive reddish color from the high diffusion of iron in crystalline and metamorphic rocks. When hydrated, it can also appear yellow.

• Soil research has shown that soil profiles are influenced by five separate, yet interacting, factors: parent material, climate, topography, organisms, and time.
  
•  Soil scientists call these the factors of soil formation.

Alluvial soil is highly fertile because it is rich in organic nutrients, humus, and essential minerals deposited by river systems. This balanced composition supports a wide variety of crops.

Mountain soil is found in the hilly and mountainous areas of the Himalayas, including its foothills. This soil is formed by the accumulation of organic matter from forest growth and is rich in humus.

Black soil is widely known as black cotton soil because cotton is the primary crop grown in it. It is also known as Regur soil.

Laterite soil is formed in tropical areas with high rainfall (above 200 cm) and high temperatures. The heavy rain causes intense leaching, washing away silica and leaving behind iron and aluminum oxides.

Mountain soils are formed in forest areas and are rich in organic matter (humus) and nitrogen due to the decomposition of fallen leaves and forest litter. However, they are typically deficient in potash, phosphorus, and lime.

Black soil is also known as Regur soil, a term derived from the Telugu word 'Reguda', which means black cotton soil.

Alluvial soil is an ex-situ soil formed by the deposition of sediments carried by rivers flowing from the mountains down to the plains.

Alluvial soil is the most widespread soil type in India, covering about 40% of the country's total land area, primarily across the northern plains and river valleys.

Regur (black) soil is formed by the weathering and disintegration of basaltic volcanic rocks, particularly in the Deccan Trap region of India.