Q894
The value of ESP in alkali soils is always
A.
Greater than 15
AnswerB.
Less than 15
C.
Any value
D.
None of these
Answer: Option A
Solution
Answer: Option A
Solution:
The value of ESP in alkali soils is always greater than 15.ESP is exchangeable sodium percentage, it measures the proportion of cation exchange sites occupied by sodium.
Soils are considered sodic when the ESP is greater than 6 and highly sodic when the ESP is greater than 15, thus alkali soils that are highly sodic with pH greater than 8.3 and ESP are always greater than 15.