Which of the following statements about the black soil is/are correct?

These are rich in lime, iron, nitrogen, calcium, magnesium.

These are deficient in phosphorus, potassium and aluminium.

These are very fertile and have high moisture strorage capacity.

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Question

Black soils are characterised by a thick, dark-coloured soil horizon rich in organic matter.
They are found in Russia (327 million hectares), Kazakhstan (108 M ha), China (50 M ha), Argentina, Mongolia, Ukraine etc.
Black soils are extremely fertile and can produce high agricultural yields due to their elevated moisture storage capacity.
Black soils are rich in iron, lime, calcium, potassium, aluminum and magnesium but deficient in nitrogen, phosphorous.
They constitute 5.6 % of global soils and contain 8.2 % of the world’s Soil Organic Carbon stocks, approximately 56 billion tonnes of carbon.
Soil organic carbon is a measurable component of soil organic matter, which makes up just 2–10% of most soil\'s mass and has an important role in the physical, chemical and biological function of agricultural soils.

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Black soils are characterised by a thick, dark-coloured soil horizon rich in organic matter.
They are found in Russia (327 million hectares), Kazakhstan (108 M ha), China (50 M ha), Argentina, Mongolia, Ukraine etc.
Black soils are extremely fertile and can produce high agricultural yields due to their elevated moisture storage capacity.
Black soils are rich in iron, lime, calcium, potassium, aluminum and magnesium but deficient in nitrogen, phosphorous.
They constitute 5.6 % of global soils and contain 8.2 % of the world’s Soil Organic Carbon stocks, approximately 56 billion tonnes of carbon.
Soil organic carbon is a measurable component of soil organic matter, which makes up just 2–10% of most soil\'s mass and has an important role in the physical, chemical and biological function of agricultural soils.

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