To plough or to cultivate the ground. To prepare the ground before you plant any thing on it.

There is a saying that says; “do not sow or plant your seed where you have not plowed”.

Ploughs are traditionally drawn by working animals such as horses or cattle, but in modern times may be drawn by tractors. 

To disturb the whole surface of the soil, so that you may prepare a seedbed used for planting seeds.

The primary purpose of ploughing is to turn over the upper layer of the soil, bringing fresh nutrients to the surface, while burying weeds, the remains of previous crops, and both crop and weed seeds, allowing them to break down. 

Through plowing the wild crops and weeds growing on the soil are destroyed, so that the hidden nutrients which are good for growing plants may come to the surface of the ground.

In modern use, a ploughed field is typically left to dry out, and is then harrowed before planting. 

Plowing and cultivating a soil homogenizes and modifies the upper 12 to 25 cm of the soil to form a plow layer.