Affects of Modern Farming on the Soil

Dr. Ross McKenzie, from the Lethbridge Research Station provides comments on the affect that modern farming has had on the soil. Some groups maintain that modern farming is destroying our top soil levels and creating adverse compaction, and decreasing organic matter. Others would say that things like organic matte are rising based on modern farming methods. I asked Ross to comment on this topic so that we could get a a professional scientific opinion to base some discussion on.