Definitions for "Sodic Soil"
A soil containing sufficient sodium to interfere with the growth of most crop plants having an exchangeable sodium percentage of 15 or more.
a salt-affected soil containing exchangeable sodium in an amount that impairs plant growth and significantly alters the soil's physical and chemical properties (SAR 13).
Those soils with high (over 6%) exchangeable sodium levels. They lead to soil structure breakdown, surface sealing and crusting.