Troeh and Thompson's Soil and Soil Fertility provides and excellent overview of soils for students in agriculture and the environmental sciences. Now in its sixth edition, this book has been updated throughout and incorporates discussions of GIS (geographic information system) and GPS (global positioning system), humus and its function in soil structure and fertility, soil reclamation for sites contaminated by pesticides or petroleum spills and advances in the understanding of water flow. In addition a new chapter on soil mechanics has been added, explaining the use of soils as foundation and construction material. Although fully updated, the text retains essential information on basic topics such as soil formation, soil chemistry, physical properties of soil, organic matter, mineralogy and soil water movement and storage. It includes a detailed discussion of plant nutrients, their deficiency symptoms and the fertilizers and soil amendments used to correct those deficiencies.Table of Contents:PrefaceSoil Soil Formation Physical Properties of Soils Soil Mechanics Soil Water Soil Organic Matter Soil Mineralogy Soil Chemistry Amending the Soil Fertilizers Nitrogen Phosphorus Potassium Calcium, Magnesium and Sulfur The Micronutrients Variations in Plant Composition Soil Classification and Survey Land Use and Soil Management Water Management Soil Erosion and Its Control Soil Pollution