bhangar

…is an important distinction between bhangar—the slightly elevated, terraced land of older alluvium—and khadar, the more fertile fresh alluvium on the low-lying floodplain. In general, the ratio of bhangar areas to those of khadar increases upstream along all major rivers. An exception to the largely monotonous relief is encountered in…

…the slightly elevated terraces, termed bhangar, carries patches of alkaline efflorescences, called usar, rendering some areas infertile. In the Ganges basin, sandy aquifers holding an enormous reserve of groundwater ensure irrigation and help make the plain the most agriculturally productive region of the country.

…doabs, older alluvial soils (called bangar) are widely distributed. These soils are medium to fine in texture, have low organic content, and are highly productive under conditions of irrigation and fertilization. In some waterlogged areas, however, these soils are salinized. Strongly alkaline soils are localized in some small patches. In…