The UN General Assembly recently decided to designate 2015 as the International Year of Soils to recognize the importance of soils for food security as well as ecosystem functions. Agricultural producers recognize the importance of good soil management to maintaining their farms’ economic viability and health. You can read more about the UN declaration here.
One recent book which discusses the importance of soils in agriculture is “Grass, Soil, Hope: A Journey through Carbon Country” by Courtney White. The book starts off with a prologue on the importance of CO2 levels, which may not be interesting to all readers. However, the heart of the book is on improved soil function and agricultural practice, which should be of interest to all agricultural producers. You can read a review of the book from Holistic Management by clicking here.