Define Soil. Give the chief characteristics and distribution of black and red
soils found in India.
Answers
Answer:
Soil is the ground or the surface of the Earth. ... The top layer of the earth's surface in which plants can grow, consisting of rock and mineral particles mixed with decayed organic matter and having the capability of retaining water.
typical black soil is highly argillaceous [Geology (of rocks or sediment) consisting of or containing clay] with a large clay factor, 62 per cent or more.
In general, black soils of uplands are of low fertility while those in the valleys are very fertile.
The black soil is highly retentive of moisture. It swells greatly on accumulating moisture. Strenuous effort is required to work on such soil in rainy season as it gets very sticky.
In summer, the moisture evaporates, the soil shrinks and is seamed with broad and deep cracks. The lower layers can still retain moisture. The cracks permits oxygenation of the soil to sufficient depths and the soil has extraordinary fertility.
Red soil is a type of soil that develops in a warm, temperate, moist climate under deciduous or mixed forest, having thin organic and organic-mineral layers overlying a yellowish-brown leached layer resting on an illuvium red layer. Red soils are generally derived from crystalline rock. They are usually poor growing soils, low in nutrients and humus and difficult to be cultivated because of its low water holding capacity.
Answer:
Define soil - A material composed of minerals, living organisms, soil organic matter, gas, and water. A body composed of soil and other parts such as rocks, roots, and animals that has size, form, and history and provides integrated functions that are greater than the sum of its parts.
Explanation:
Black Soils
The parent material for most of the black soil are the volcanic rocks that were formed in the Deccan Plateau (Deccan and the Rajmahal trap).
The parent material for most of the black soil are the volcanic rocks that were formed in the Deccan Plateau (Deccan and the Rajmahal trap).In Tamil Nadu, gneisses and schists form the parent material. The former are sufficiently deep while the later are generally shallow.
The parent material for most of the black soil are the volcanic rocks that were formed in the Deccan Plateau (Deccan and the Rajmahal trap).In Tamil Nadu, gneisses and schists form the parent material. The former are sufficiently deep while the later are generally shallow.These are the region of high temperature and low rainfall. It is, therefore, a soil group typical to the dry and hot regions of the Peninsula
Characteristics of Black Soils
Characteristics of Black SoilsA typical black soil is highly argillaceous [Geology (of rocks or sediment) consisting of or containing clay] with a large clay factor, 62 per cent or more.
Characteristics of Black SoilsA typical black soil is highly argillaceous [Geology (of rocks or sediment) consisting of or containing clay] with a large clay factor, 62 per cent or more.In general, black soils of uplands are of low fertility while those in the valleys are very fertile.
Characteristics of Black SoilsA typical black soil is highly argillaceous [Geology (of rocks or sediment) consisting of or containing clay] with a large clay factor, 62 per cent or more.In general, black soils of uplands are of low fertility while those in the valleys are very fertile.The black soil is highly retentive of moisture. It swells greatly on accumulating moisture. Strenuous effort is required to work on such soil in rainy season as it gets very sticky.
Characteristics of Black SoilsA typical black soil is highly argillaceous [Geology (of rocks or sediment) consisting of or containing clay] with a large clay factor, 62 per cent or more.In general, black soils of uplands are of low fertility while those in the valleys are very fertile.The black soil is highly retentive of moisture. It swells greatly on accumulating moisture. Strenuous effort is required to work on such soil in rainy season as it gets very sticky.In summer, the moisture evaporates, the soil shrinks and is seamed with broad and deep cracks. The lower layers can still retain moisture. The cracks permits oxygenation of the soil to sufficient depths and the soil has extraordinary fertility.
Colour of Black Soils
The black colour is due to the presence of a small proportion of titaniferous magnetite or iron and black constituents of the parent rock.
The black colour is due to the presence of a small proportion of titaniferous magnetite or iron and black constituents of the parent rock.In Tamil Nadu and parts of Andhra Pradesh, the black colour is derived from crystalline schists and basic gneisses.
The black colour is due to the presence of a small proportion of titaniferous magnetite or iron and black constituents of the parent rock.In Tamil Nadu and parts of Andhra Pradesh, the black colour is derived from crystalline schists and basic gneisses.Various tints of the black colour such as deep black, medium black, shallow black , a mixture of red and black may be found in this group of soils.
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