1. 01-01-1977 This publication reports on progress that has been made to develop a means of measuring soil degradation.
  2. 01-01-2017 Five of the top ten problems facing humanity (http: //cnst.rice.edu/content.aspx?id=246) over the next 50 years (food, water, energy, environment and poverty) are directly related to the health of soil resources. Several different factors, including: (a) excessive tillage; (b) inappropriate crop...