Krishnan and Mukhtarung Classification is related to

Correct option is D

· Krishnan & Mukhtar Ung (1942) proposed one of the earliest rainfalls–soil moisture regime classifications of India.
· The system grouped Indian soils based on annual rainfall, evapotranspiration, and moisture availability.
Why other options are wrong
· (a) Land capability is a USDA (Klingebiel & Montgomery) system.
· (b) Soil temperature classification = USDA (mesic, thermic, hyperthermic).
· (c) Soil horizon nomenclature = USDA/FAO, not Krishnan–Mukhtar Ung.