GK
SOIL AND AGRICULTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Calcium
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Nitrogen
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Aluminium
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Phosphorus
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Detailed explanation-1: -Notes: Soil of Western Rajasthan have a high content of Calcium. These soils have rich content of iron-oxide and devoid of calcium salts because calcium salts soluble in water and are easily washed away.
Detailed explanation-2: -Sandy soil: It is mostly found in Dry and Hot region.
Detailed explanation-3: -Distribution of soil in Rajasthan Alluvial soil is predominantly deposited in north-east region of Rajasthan whereas sandy soil is found in Thar Desert of western Rajasthan. Black soil is predominantly found in south-east Hadoti region.
Detailed explanation-4: -Most agricultural soils contain considerable amounts of Ca. A good estimate is that each cmol of exchangeable Ca is equivalent to 400 kg/ha to a depth of 15 cm. Many soils contain several tons of exchangeable Ca on cation exchange sites.