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Question 28 of 44 · Climate, Soils & Vegetation of India
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Pedology is a branch of:

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Answer: Option C — Soil science

Detailed Solution

Pedology is the branch of soil science that studies soils in their natural setting: how they form (pedogenesis), how they are classified, how they are distributed across the landscape, and their physical, chemical and biological properties. The word comes from the Greek "pedon", meaning "soil" or "ground", and "logos", meaning "study".

Two main branches of soil science:

Pedology: studies soil as a natural body, focusing on its origin, formation, classification and mapping.

Edaphology: studies soil in relation to living things, especially plants, focusing on how soil properties affect plant growth and crop production. The word comes from the Greek "edaphos" (ground).

Topics studied in pedology:

  • Soil formation and the factors that control it: parent material, climate, organisms, relief and time.
  • Soil profiles and horizons.
  • Soil classification systems, such as USDA Soil Taxonomy and the World Reference Base.
  • Soil surveys and maps for land-use planning.

Important figures:

  • V. Dokuchaev, a Russian scientist, is regarded as the "father of soil science" (pedology). In the 1880s, he showed that soils form as a result of climate, parent rock, organisms, relief and time, and classified soils based on these factors.
  • Hans Jenny later expressed soil formation as an equation of these five factors.

Soil science in India:

  • The ICAR-National Bureau of Soil Survey and Land Use Planning (NBSS&LUP), Nagpur, conducts soil surveys and prepares soil maps.
  • The ICAR-Indian Institute of Soil Science is at Bhopal.
  • The Soil Health Card scheme (2015) helps farmers know the nutrient status of their soils.
  • World Soil Day is observed on 5 December, and 2015 was declared the International Year of Soils by the United Nations.

Related sciences:

  • Petrology: the study of rocks.
  • Palaeontology: the study of fossils.
  • Orology (orography): the study of mountains.
  • Geomorphology: the study of landforms.
  • Hydrology: the study of water.
  • Agronomy: the science of crop production and soil management.

Why not the other options?

  • ✗The study of rocks is petrology.
  • ✗The study of fossils is palaeontology.
  • ✗The study of mountains is orology.

Quick tip

Remember: Pedology = soil science (Greek "pedon", soil), father V. V. Dokuchaev; edaphology = soil and plants; 5 December = World Soil Day.

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Climate, Soils & Vegetation of India — Preparation

This question tests your understanding of Climate, Soils & Vegetation of India, a key topic in the General Knowledge section. The detailed solution above uses a step-by-step approach to show the reasoning, and where available, a shortcut that helps you solve similar questions in under 90 seconds during the actual exam.

This topic covers the climate of India and the monsoon, the seasons and the distribution of rainfall, the major soil types (alluvial, black, red, laterite, arid and mountain soils), and India's natural vegetation, including the types of forests and the states where they are found. Common questions ask which soil is best for cotton (black or regur soil), where laterite soil forms, which place receives the highest rainfall (Mawsynram in Meghalaya), and what 'mango showers' and the 'retreating monsoon' are. Questions on forest types usually link a forest type to its rainfall and to trees such as teak, sal and sundari. Practise the climate, soils and vegetation of India questions below, written in the style of the general awareness sections of exams such as SSC, banking, railways, CUET GAT, MAH CET and CLAT. Each question comes with a detailed explanation that adds related facts, so every question helps you revise more than one point.

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