Improvement techniques of arable lands are:
Correct answer: E. All of the above
- A. Mulch tillage
- B. Contour cultivation
- C. Tie Ridging
- D. Sub-soiling
- E. All of the above
Explanation
Mulch tillage, contour cultivation, tie ridging and sub-soiling improve arable land by conserving moisture, reducing erosion or breaking compacted layers. Therefore, all the listed techniques are applicable.
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