Tillage
From Wikipedia, a free encyclopedia written in simple English for easy reading.

A farmer with a traditional horse-pulled plough.
Tillage is the process in which soil is loosened and softend by tillers or harrows pulled by a tractor or by a plough pulled by an animal or human. By this process the upper crust of the soil break, air and sunlight thus pentrates the soil in the process increasing its fertility but too much or frequent tillage may impair its fertility.
This short article needs someone to make it better.
You can help Wikipedia by adding to it.