Front Cover; Advances in Agronomy, Volume IV; Copyright Page; Contents; Contributors to Volume IV; Preface; Chapter 1. Grassland Agronomy in Australia; I. Introduction; II. The Approach to Modern Grassland Improvement; III. Environmental Control; IV. Specific Lines of Agronomic Investigation; V. Integration; References; Chapter 2. Type of Soil Colloid and the Mineral Nutrition of Plants; I. Introduction; II. Approaches to the Study of the Ionic Environment of Plant Roots in Soil; III. Growth and Cation Contents of Plants Grown on Natural and Synthetic Soils; IV. Agronomic Applications

II. Plant Adaptation as Related to Compounding of Seed MixturesIII. Compounding Mixtures as Related to Use; References; Chapter 6. Soil Manganese in Relation to Plant Growth; I. Introduction; II. Manganese Determination; III. Manganese in the Soil; IV. The Role of Microorganisms in Transforming Manganese Compounds; V. Symptoms of Manganese Deficiency in Plants; VI. Manganese Content of Plants; VII. Correcting Manganese Deficiency; VIII. Manganese Kutrition and Fertilizer Interactions; IX. Manganese Toxicity in Plants; X. Function of Manganese in Plants; References

Chapter 7. Atomic Energy and the Plant SciencesI. Introduction; II. Effects of Radiation on Plants; III. Uses of Isotopes in Plant Sciences; References; Chapter 8. Vegetation Control on Industrial Lands; I. Scope and Nature of the Problem; II. Chemicals Used for Vegetation Control; III. Special Problems of Various Industrial Lands; References; Chapter 9. Soil and the Growth of Forests; I. Introduction; II. Soil as an Environment for Tree Roots; III. Northeastern Region; IV. Lake States Region; V. Central Hardwood Region; VI. Prairie-Plains Region; VII. West Coast Region

VIII. Southern Appalachian RegionIX. Southern Region; X. Southeastern Region; XI. Résumé of Principal Soil Properties Related to Forest Growth; References; Author Index; Subject Index