Question:

The plough which combines the principle of the regular disc plough and the disc harrow, used for shallow ploughing is

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Harrow plough is used for shallow ploughing and combines features of disc plough and disc harrow.
  • Harrow plough
  • Chisel plough
  • Subsoiler
  • Rotary plough
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The Correct Option is A

Solution and Explanation

Concept:
Different ploughs are used according to soil condition, depth of ploughing, and field operation requirement.

Step 1:
A disc plough cuts and turns soil using concave discs.

Step 2:
A disc harrow breaks clods and pulverizes soil using gangs of discs.

Step 3:
A harrow plough combines the working principles of a regular disc plough and a disc harrow.

Step 4:
It is suitable for shallow ploughing and light soil working.

Step 5:
Therefore, the correct answer is harrow plough. \[ \boxed{\text{Harrow plough}} \]
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