Soils of India

Story hook

In 1946, agronomist Albert Howard, returning from 30 years of service in India, wrote a book that would launch the modern organic farming movement. "An Agricultural Testament" drew heavily on what he'd observed in Pusa, Bihar and Indore, MP: that Indian farmers, working with composted soil and crop rotation, were achieving yields that European chemical-only agriculture could not match. His central observation: "soil fertility is the foundation of public health."

Eighty years on, India's soils tell a different story. The 2024 ICAR National Bureau of Soil Survey report found that 30% of India's land is degraded — eroded, salinised, waterlogged, or chemically exhausted. The Indo-Gangetic Plain, once the world's breadbasket, is showing yield plateaus despite increasing fertilizer use. The black cotton soil belt of Maharashtra is losing moisture-holding capacity. The red soil regions of peninsular India are seeing nutrient depletion at 2-3x replenishment rate.

The story of Indian soils is the story of Indian civilization. The Indo-Gangetic alluvium built the Harappan, Mauryan, Mughal, and British-Indian economies. Black cotton soil created Maharashtra's textile boom and the cotton merchant clans of Gujarat. Red soil's iron-rich uplands gave us peninsular plateaus' millet civilizations. Mountain soils under tea plantations created Darjeeling and Nilgiris as British hill- stations. Today, soils determine which crops survive climate change, which farmers stay solvent, and where the next migration waves originate. UPSC's GS-1 paper tests them every Prelims year and Mains every other year.

Why this matters for UPSC

Soils sit in GS-I (Indian Geography) and GS-III (Agriculture, Environment). Prelims asks 1-2 questions every year on classification, distribution, and crops. Mains tested soil health and degradation in 2018, 2020, 2023 with focus on soil health cards, ICAR programmes, and sustainable agriculture linkages. High weight.