Advances in Agronomy
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Table of contents
- Contentsv
- Contributorsvii
- Prefaceix
- Chapter 1. Interactions Among Root-Inhabiting Fungi and Their Implications for Biological Control of1
- I. Introduction2
- II. Functional Diversity in the Root Zone3
- III. Interactions among Root-Inhabiting Fungi13
- IV. Opportunities for Pest Control17
- V. Research Priorities21
- References24
- Chapter 2. Dwarfing Genes in Plant Improvement35
- I. Introduction36
- II. The Biochemical Basis of the Dwarf Phenotype38
- III. Dwarfing Genes and Their Use for Breeding43
- IV. Breeding Challenges and Varieties Developed45
- V. Pleiotropic Effects of Dwarfing Genes48
- VI. Molecular Mapping of Dwarfing Genes51
- VII. Concluding Remarks55
- References56
- Chapter 3. A Review of the Effect of N Fertilizer Type on Gaseous Emissions65
- I. Introduction67
- II. The Processes Controlling Emissions of Nitrogen Gases from Fertilizers69
- III. Measurements of Ammonia Emission Following Nitrogen Fertilizer Application78
- IV. Ammonia Emission Factors for Nitrogen Fertilizers88
- V. Measurements of Nitrous Oxide Emissions Following Nitrogen Fertilizer Applications90
- VI. Nitrous Oxide Emission Factors for Nitrogen Fertilizers97
- VII. Nitric Oxide Emissions from Nitrogen Fertilizers99
- VIII. Summary and Conclusions99
- References103
- Chapter 4. Rhizobia in the Field109
- I. Introduction110
- II. Diversity in Rhizobia112
- III. Rhizobium Systematics123
- IV. Natural Populations of Rhizobia129
- V. Introduction of Rhizobia into Soil143
- VI. Concluding Remarks147
- References148
- Index169
Volume 73 contains 4 reviews on contemporary and important topics in the agronomic sciences. In Chapter 1, "Interactions among Root-Inhabiting Fungi and Their Implications for Biological Control of Root Pathogens," fungi are defined, their distribution and abundance are discussed, and their role in agroecosystems is present. Chapter 2, "Dwarfing Genes in Plant Improvement," discusses advances in the role of dwarfing genes in plant improvement. Emphasis is placed on breeding and genetic aspects. Chapter 3, "A Review of the Effect of N Fertilizer Type on Gaseous Emissions," covers a topic that is of great environmental interest — the effect of nitrogen fertilizers on gaseous emissions. Chapter 4, "Rhizobia in the Field," is a comprehensive review of rhizobia including diversity, systematics, natural populations, and field introduction of rhizobia.