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#black soil

2 public questions tagged with this topic.

Natural History of Indian subcontinent

Black soil of Deccan plateau is best suited for

Black soil of Deccan plateau, regur, formed by basalt weathering, possesses high clay content predominantly montmorillonite conferring superior moisture retention for months after monsoon, rich in calcium carbonate, potash, lime, yet poor nitrogen. Texture fine, cracks deep in summer facilitating self-ploughing. Cotton Gossypium requires long frost-free period, moderate water, black soil ideal as it retains moisture and supports deep taproot. Maharashtra Vidarbha and Marathwada cotton belts exemplify correlation, producing majority Indian cotton export due to regur fertility properties. Mastery of this rule helps candidates differentiate closely related categories and avoid common errors in diversity questions.

Ref: ICAR – Black Soil Best Suited for Cotton Regur; NCERT Geography Cotton Cultivation Soil Requirement

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Natural History of Indian subcontinent

Black soil (regur) is typical of

Black cotton soil locally called regur or black soil is vertisol formed by weathering of Deccan trap basalt, rich in montmorillonite clay imparting high swelling shrinkage and high water retention capacity. Found extensively in Deccan Peninsula of Maharashtra, Madhya Pradesh, Gujarat, and extends into semi-arid zone due to similar parent material and semi-arid climate fostering basalt weathering. Soil deep, fine textured, high cation exchange capacity, calcium rich but nitrogen poor. Suitable for cotton, sorghum, pulses, typical of semi-arid plateau regions. Remembering this distinction is crucial for solving taxonomy application questions in GATE and CSIR-NET life sciences papers.

Ref: ICAR Soil Classification Regur Black Soil Deccan; NCERT Geography Soil Distribution Semi-arid Zone

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