Advances in Agronomy

Front Cover 2
Advances in Agronomy, Volume V 5
Copyright Page 6
Contributors to Volume V 7
Preface 9
Contents 11
Chapter 1. A Half Century of Wheat Improvement in the United States 13
- I. Introduction 15
- II. Acreage, Yield per Acre, and Production in the United States 16
- III. Improvement in Cultural Practices 37
- IV. The Role of Improved Varieties 64
- V. Improvements in Methods of Breeding Wheat 124
- VI. Control of Diseases 133
- VII. Control of Insect Pests of Wheat 145
- Acknowledgments 153

Front Cover 2
Advances in Agronomy, Volume V 5
Copyright Page 6
Contributors to Volume V 7
Preface 9
Contents 11
Chapter 1. A Half Century of Wheat Improvement in the United States 13
- I. Introduction 15
- II. Acreage, Yield per Acre, and Production in the United States 16
- III. Improvement in Cultural Practices 37
- IV. The Role of Improved Varieties 64
- V. Improvements in Methods of Breeding Wheat 124
- VI. Control of Diseases 133
- VII. Control of Insect Pests of Wheat 145
- Acknowledgments 153
- References 153
Chapter 2. The Soil Organic Fraction 165
- I. Introduction 165
- II. Formation Processes 166
- III. Distribution in Soils 167
- IV. Composition 170
- V. Physicochemical Properties 177
- VI. Methods of Determination 186
- VII. Contribution to Plant Nutrition 188
- VIII. Conclusion 192
- References 193
Chapter 3. Progress in Agricultural Engineering 197
- I. Introduction 197
- II. Concept of Agricultural Engineering 198
- III. General Characteristics of Modern Farming 199
- IV. Future Trends 202
- References 228
- V. Concluding Statements 228
Chapter 4. Chemical Weathering of Minerals in Soils 231
- I. Introduction 233
- II. Relative Stability of Minerals; Weathering Sequences and Indexes 243
- III. Factors Affecting the Reaction Rates of Chemical Weathering 252
- IV. Frequency Distribution of Minerals in Soils in Relation to Chemical Weathering 270
- V. Weathering Release of Nutrient Elements from Soil Minerals 303
- VI. Summary 318
- Acknowledgments 321
- References 321
Chapter 5. The Changing Pattern of Agronomy and Horticulture in Canada 331
- I. Introduction 332
- II. Cereals 334
- III. Field Husbandry, Soils and Agricultural Engineering 351
- IV. Forage Crops 364
- V. Horticulture 378
- VI. Tobacco 387
- References 393
Chapter 6. Soil Management for Conservation and Productivity 395
- I. Introduction 395
- II. Factors Influencing Soil Structure 396
- III. Soil Management for Structure Maintenance 402
- IV. Influence of Rotations on Conservation and Productivity 406
- V. Chemical Soil Conditioners 414
- VI. Summary 416
- References 417
Author Index 419
Subject Index 431

Description

TOC

Reviews (0)