Question

Plough Pan is developed due to

A Repeated puddling Correct Answer Incorrect Answer
B Use of surplus residue as a mulch Correct Answer Incorrect Answer
C Green manuring Correct Answer Incorrect Answer
D Use of gypsum Correct Answer Incorrect Answer

Solution

They can be broken up by using a subsoiler or by deeper ploughing. Pans may also be formed by the deposition of iron compounds, and sometimes humus, in layers in the soil or subsoil.

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