Field Book for Describing and Sampling Soils, Version 3. 0 by Agriculture Department (2013, Spiral, New Edition) for sale online

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Organic No-Till Farming offers a map to an organic farming system that limits tillage, reduces labor, and improves soil structure. Based on the latest research by pioneering agriculturists, this book offers new technologies and tools based on sound biological principles, making it possible to reduce and even eliminate tillage. Field-tested over many seasons, these methods make cover crops into a source of fertility as well as a tool for weed management.

Organic No-till Farming: Advancing No-till Agriculture--crops, Soils, Equipment [Book]

Hans Jenny's oeuvre ranks among those of the giant in the earth sciences. Even within this rarefied atmosphere of intellectual achievements, his book Factors of Soil Formation stands out as a masterpiece. from the Foreword by Ronald Amundson, University of California at BerkeleyHans Jenny (1899 1992), who taught at the University of California at Berkeley for 31 years, was a world authority on soils and soil formation.

Factors of Soil Formation: A System of Quantitative Pedology [Book]