Here is a story and video highlighting the Total Tillage Field Day held on September 4 near Appleton, MN.
written by Jonathan Eisenthal, Minnesota Cornerstone blog
About 250 farmers gathered at a farm field seven miles south of
Appleton in Lac qui Parle County to see demonstrations and hear
information covering the entire spectrum of tillage, from ‘biological
tillage’ (letting earthworms and tillage radishes do the heavy lifting)
to moldboard plowing — the most invasive technique, but still a useful
tool to be applied sparingly, according to the experts.