Question

Which one is the mechanical measure of erosion control?

• A. Sub-soiling
• B. Mixed cropping
• C. Strip cropping
• D. Mulching

Hint:

Mechanical erosion control measures involve physical operations or structures; sub-soiling is one such measure.

Answer 1

The Correct Option is A

Concept:
Erosion control measures may be agronomic, mechanical or vegetative. Mechanical measures involve physical modification of land or soil.

Step 1: Check sub-soiling.
Sub-soiling is a mechanical operation in which hard compact layers below the surface soil are broken using implements. \[ \text{Sub-soiling}=\text{mechanical measure} \]

Step 2: Check other options.
Mixed cropping, strip cropping and mulching are agronomic or vegetative conservation practices.

Step 3: Final answer.
Among the given options, the mechanical measure is: \[ \text{Sub-soiling} \] \[ \therefore \text{Correct Answer is (A)} \]