question_answer 86)

  Which element is responsible for causing soil salinity? At what concentration does the soil become saline?

Answer:

                  Soil salinity is the salt content in soil, which is caused by improper irrigation. The process of increasing salt content is termed as saliniation. Causes of Soil Salinity The high salt concentration of soil is caused by improper irrigation method from a salt laden water table, when salt concentration in soil is increased, than it get accumulated due to evaporation. Human activities like fertilizing crop is also responsible for salinity of soil. As fertilizer contain potassium, which can form a naturally occurring salt-sylvite. Salinity of soil degrades soil and vegetation. Normally the pH value of soil comprises between 2.2-9.7, while above which thesoil is degrading by salt content.