Tillage can have negative effects on the environment because of the moving of soil materials, pollutant on the top soil that enters into bodies of water, the increase of erosion, and destroys earthworm paths and root channels.
Basically, tillage breaks soil up, destroying its overall structure. It encourages surface runoff and therefore soil erodes more easily. In some cases soil erosion is beneficial, but in most cases, it is not. Tillage has also been found to cause the emissions of more toxic gases such as N20.
