What is a soil called whose saturation extract has EC above 4 dS/m, an exchangeable sodium percentage below 15 and a pH usually below 8.5?
Correct answer C. Saline soils
Explanation
Saline soils contain excess soluble salts (EC over 4 dS/m) but not excess exchangeable sodium (ESP under 15), and salts are mostly neutral, so pH stays below 8.5.
Answer checked How we write and check questions
Discussion