Table of Contents

Foreword Chapter 1 Nature's Soil Management Chapter 2 Our Soils - Under Construction Chapter 3 Potassium in the Soil Colloid Complex & Plant Nutrition Chapter 4 Saturation Degree of Soil & Nutrient Delivery to the Crop Chapter 5 Adsorbed Ions on the Colloidal Complex & Plant Nutrition Chapter 6 Surface Relationships of Roots & Colloidal Clay in Plant Nutrition Chapter 7 The Use of Mulches Chapter 8 Physiology of Root Nodule Bacteria in Relation to Fertility Levels of the Soil Chapter 9 Magnesium Depletion in Relation to Some Cropping Systems and Soil Treatments Chapter 10 Calcium in Relation to Phosphorus Utilization by Some Legumes & Nonlegumes Chapter 11 Carbohydrate-Protein Ratio of Peas in Relation to Fertilization with Potassium, Calcium & Nitrogen Chapter 12 Calcium & Phosphorus as They Influence Manganese in Forage Crops Chapter 13 Soil Phosphorus - Activated Via Soil Organic Matter Chapter 14 Calcium-Potassium-Phosphorus Relation as a Possible Factor in Ecological Array of Plants Chapter 15 Potash Deficiency Follows Continuous Wheat Chapter 16 Red Clover Suggests Shortage of Potash Chapter 17 Potassium Helps Put More Nitrogen into Sweet Clover Chapter 18 Sweet Clover Responds to Potash Fertilizer Chapter 19 Artificial Manure Production on the Farm Chapter 20 Farm Trials of Artificial Manure Chapter 21 Nitrate Accumulation Under the Straw Mulch Chapter 22 Organic Matter for Plant Nutrition Afterword Concerning the Influence of Calcium on the Physiological Function of Magnesium Bibliography Index