1 Subjects: “...Ecology ...”

2 “... field experiments, ecological principles for sustainable agriculture that can reverse the trend...”

3 Table of Contents: “... -- Perennial grasses creating soil structure and raising  fertility -- Ecological agriculture to mitigate soil...”

4 Table of Contents: “... of agricultural intensification -- 2 Agro-ecology: the Scientific Basis for Sustainable Intensification...”

5 Table of Contents: “... fertilizer strategies, and indicators of potency -- Chapter 16. Ecological reclamation of acid soils...”

6 “... and integrates economic, agro-ecological and social perspectives, drawing on a wealth of expertise...”