Black cotton soils are
a) Heavy clay soils varying from clay to Loam, with clay content of 40 to 50% formed by decomposition of rocks by long continued weathering*
b) Compacted and laminated clays
c) Soils containing carbon of coal underneath
d) Dark brown earthy materials formed due to partial or complete decomposition of vegetable matter
a) Heavy clay soils varying from clay to Loam, with clay content of 40 to 50% formed by decomposition of rocks by long continued weathering*
b) Compacted and laminated clays
c) Soils containing carbon of coal underneath
d) Dark brown earthy materials formed due to partial or complete decomposition of vegetable matter