Indian Agricultural Research Institute, New Delhi
*Present address: Agricultural Chemist, Agricultural Research Institute, Rajendranagar, Hyderabad-500030 (A.P.)
**Present address: Emeritus Scientist, Office of the Soil Correlator, All India Soil and Land Use Survey, Hebbal, Bangalore
Black and red soils developed in close proximity under similar conditions of climate under Rajolibunda Diversion Irrigation Scheme (Mahaboobnagar district, Andhra Pradesh) were studied for their genetic interrelationship as affected by parent material or topographical situation or both. Granitic-gneissic complex with minor differences in their mineralogical composition forms the major geological formation in the area. The two soils, despite their occurrence in close proximity, differ in situation, and in physical, chemical and physicochemical properties. This may be attributed to minor differences in mineralogical make-up and topographical features.
Genesis and classification of soils, associated red and black soils
