Alluvial and Black soil

Alluvial Soil:

• Deposition of materials by sea and river is called alluvium and the soil formed due to deposition of alluvium is called as alluvial soil.
• This type of soil mainly found in the Indo-Ganga and Brahamputra plain i.e. the whole northern plain and in some parts of river basin in south and some plateau region.
• This soil is also  found in the deltas of the Mahanadi, Godavari,  Cauveri and Krishna.
• Alluvial soil can be broadly categorised in two types i.e. New alluvial soil and old alluvial soil.
• Old alluvial soils are found in slightly elevated areas far away from river and are clayey and sticky.
• New alluvial soil is found in the flood plain of the river and is much fertile in comparison to the old alluvial soil.
• Crops Grown : alluvial soil is suitable for the rabi and kharif crop like cereals, cottons, oilseeds  and sugarcane.

Regur or Black soil:

• The regur or black soils have developed extensively upon the Lava Plateaus of Maharashtra, Gujarat, Madhya Pradesh mainly Malwa and  are formed due to volcanic activities.
• These soils are very fertile and contain a high percentage of lime and a moderate amount of potash.
• The type of soil is especially suited for the cultivation of cotton and hence sometimes called ‘black cotton soil.’
  Crops Grown: Cotton, Jowar, Wheat, Linsead, Gram, Fruit and Vegetable.