In waterlogged lands

Correct option is B

✅ (b) the soil pores are saturated up to the root zone of the crop
· Waterlogging occurs when soil pores are saturated with water up to the root zone, affecting crop growth.
· It leads to oxygen deficiency in the root zone, causing physiological disorders.
· The root zone varies between 0.5–1.5 m depth depending on the crop.
❌ (a) the soil pores are saturated within a depth of 40 m
· Saturation up to 40 m is hydro-geological saturation, not agricultural waterlogging.
· Incorrect.
❌ (c) the soil pores are saturated within a depth of 1 m
· Fixed depth is not a criterion; it depends on the root zone depth.
· Partial truth, but (b) is more precise.
❌ (d) the soil pores are saturated within a depth of 60 m
· Similar to (a), this refers to aquifer saturation, not waterlogging definition for crops.
· Incorrect.