Front Cover; Advances in Agronomy, Volume 29; Copyright Page; Contents; Contributors to Volume 29; Preface; CHAPTER 1. NITROGEN FIXATION IN GRASSES; I. Introduction; II. Nitrogen Fixation in C-3 and C-4 Grasses; III. Bacteriology; IV. Factors Affecting Nitrogen Fixation in Grasses; V. General Discussion; References; Note Added in Proof; CHAPTER 2. SOMATIC CELL GENETICS AND PLANT IMPROVEMENT; I. Introduction; II. Plant Cell Tissue Culture; III. Anther Culture and Haploids; IV. Mutant Isolation and Selection; V. Plant Cell Protoplasts; VI. Genetic Transformation in Plants; VII. Conclusions
ReferencesCHAPTER 3. SOIL ORGANIC PHOSPHORUS; I. Introduction; II. Organic Phosphorus Content of Soil; III. Nature of Soil Organic Phosphorus; IV. Organic Phosphorus in Soil Solution; V. Organic Phosphorus Turnover in Soil; VI. Conclusions; References; CHAPTER 4. GROWTH OF THE LEGUME SEEDLING; I. Introduction; II. Physiological Predetermination; III. Germination; IV. Stages of Seedling Development; V. Improvement of Legume Seedling Vigor; VI. Seedbed Preparation; VII. Seeding Forage Legumes; VIII. Seeding Management Practices; References
CHAPTER 5. YIELDS AND CULTURAL ENERGY REQUIREMENTS FOR CORN AND SOYBEANS WITH VARIOUS TILLAGE-PLANTING SYSTEMSI. Introduction; II. Tillage-Planting Systems; III. Influence of Tillage-Planting System on Yields; IV. Yield Factors Influenced by Tillage-Planting System; V. Energy Requirements for Various Tillage-Planting Systems; VI. Projecting Energy Savings with Reduced Tillage; VII. Conclusions; References; CHAPTER 6. EFFECTS OF THE ENVIRONMENT ON THE GROWTH OF ALFALFA; I. Introduction; II. Genetic Variation in Response to Environment; III. Shoot Growth; IV. Root Growth
V. Environmental Factors and Vegetative GrowthVI. Phases in Development; VII. Plant Associations; VIII. Genetic Adaptation to Environment; References; CHAPTER 7. PHYSICAL PROPERTIES OF ALLOPHANE SOILS; I. Introduction; II. Index Properties; III. Structure of Allophane Soils; IV. Physical Characteristics of Allophane Soils; V. Soil Engineering; References; CHAPTER 8. DISEASE AND INSECT RESISTANCE IN RICE; I. Introduction; II. Disease Resistance; III. Insect Resistance; IV. Developing Varieties with Multiple Resistance; V. Stability of Resistance; VI. Conclusions; References
CHAPTER 9. TRICKLE-DRIP IRRIGATION: PRINCIPLES AND APPLICATION TO SOIL-WATER MANAGEMENTI. Introduction; II. Potential Advantages of Trickle Irrigation; III. Problems in Practical Use; IV. Modeling of Water and Salt Flows; V. Soil-Water Regime during Trickle Infiltration; VI. Solute Distribution during Infiltration; VII. Application of Infiltration Models to the Design of Trickle Irrigation Systems; VIII. Water Management in Marginal Soils; List of Symbols; References; Subject Index