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Advances in agronomy. Volume 167 /
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Amsterdam :
Academic Press,
2021.
|
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- 4.3. C4 to C3 vegetation change
- 4.4. Vegetation change involving CAM species
- 5. Soil profile indicators of a presumed change in vegetation and/or climate
- 5.1. Ecotone boundary shifts
- 5.2. Changes in community composition
- 5.2.1. Fire
- 5.2.2. Domestic animal grazing
- 5.2.3. Climate change
- 6. Contribution of organic materials to the soil organic C pool
- 6.1. Legume residues
- 6.2. Animal dung
- 6.3. Compost
- 6.4. Animal excreta under grazing
- 7. Relative contributions of C3 and C4 sources to diet
- 7.1. Domestic and wild animals
- 7.2. Insects
- 7.3. Earthworms
- 7.4. Nematodes
- 8. Relative proportions of roots of mixed C3 and C4 species
- 9. Relative contribution of two carbon sources to respiration
- 9.1. Roots and soil
- 9.2. Mixed C3 and C4 plants
- 9.3. C3 and C4 animal excreta slurries and soil
- 9.4. Two carbon substrates in a fungal culture medium
- 9.5. Biochar and soil
- 10. Conclusions
- References
- Further reading
- Chapter Three: The effect of elemental sulfur fertilization on plant yields and soil properties
- 1. Introduction
- 2. Review of literature
- 2.1. Properties and importance of sulfur
- 2.2. Sulfur in nature
- 2.3. Sulfur in the soil
- 2.4. Transformation of elemental sulfur in the soil
- 2.5. Sulfur in plants
- 3. Research aims
- 4. Materials and methods
- 4.1. Incubation experiments
- 4.2. Pot experiments
- 4.3. Field trials
- 4.3.1. Climatic conditions
- 4.3.2. Plan of experiments
- 4.4. Chemical analysis of soil and plants
- 4.5. Statistical methods used to obtain the results
- 5. Research results and discussion
- 5.1. The release of sulphates(VI) from S in incubation experiments
- 5.1.1. The oxidation rate of S and content of sulphates(VI)
- 5.1.2. Soil pH in incubation experiments.
- 5.2. The degree of fragmentation of S as a conditional factor in its effectiveness
- 5.2.1. The reaction of white mustard to elemental sulfur fertilization
- 5.2.1.1. Yield
- 5.2.1.2. The content and uptake of sulfur and the ratio of N:S
- 5.2.1.3. Soil pH and sulfur content
- 5.2.2. The response of spring wheat to elemental sulfur fertilization
- 5.2.2.1. Spring wheat yields
- 5.2.2.2. Content and update of sulfur and the N:S ratio
- 5.2.2.3. Soil pH and sulfur content
- 5.2.3. Response of spring rape to elemental sulfur fertilization
- 5.2.3.1. Spring rape yields
- 5.2.3.2. Content and uptake of sulfur and the N:S ratio in spring rape
- 5.2.3.3. Soil pH and sulfur content
- 5.2.4. Response of maize to elemental sulfur fertilization
- 5.2.4.1. Maize yields
- 5.2.4.2. Content and uptake of sulfur and the N:S ratio
- 5.2.4.3. Soil pH and sulfur content in the soil
- 5.3. Determining the optimal dose of sulfur for winter rape and winter wheat
- 5.3.1. Cultivated plant yields
- 5.3.2. Content and uptake of sulfur and the N:S ratio in cultivated plants
- 5.3.3. Content of glucosinolates in rape seeds
- 5.3.4. Proportion of fatty acids in rape seed oil
- 5.3.5. Soil pH and the content of total sulfur and sulphate(VI) in the soil
- 5.3.6. The correlation between the selected parameters of the field experiments
- 5.3.7. Sulfur balance in cultivated plants
- 6. Conclusions
- References
- Chapter Four: Environmentally friendly agronomically superior alternatives to chemically processed phosphate fertilizers: ...
- 1. Introduction
- 2. Chemically processed fertilizers
- 2.1. Production
- 2.1.1. Environmental impact
- 2.1.2. Resource and energy efficiency
- 2.2. Chemically processed fertilizers usage
- 2.2.1. Environmental impact
- 2.2.2. Efficiency of soluble phosphate fertilizers
- 3. PR/S/Acidithiobacillus sp. combinations.
- 3.1. Direct application of PR
- 3.2. Studies on PR/S fertilizers
- 3.2.1. Early studies
- 3.2.2. Studies since 1970
- 4. Biochemistry of PR acidulation in PR/S
- 5. Source of Acidithiobacilli sp. bacteria
- 5.1. Option I. Adding Acidithiobacillus sp. culture to PR/S
- 5.2. Option II. Bacterial culture applied to the soil
- 5.3. Option III. Relying on soil resident soil population
- 6. Factors that affect the dissolution of PR in PR/S
- 6.1. Rate of oxidation of S
- 6.2. Reactivity and grade of PRs
- 7. Agronomic evaluation of PR/S/Cult combinations
- 7.1. Data source
- 7.2. Results
- 7.3. Meta-analysis-Greenhouse studies
- 7.4. Meta-analysis permanent pastures-Field studies
- 7.5. Meta-analysis results-Seasonal crops
- 7.6. Discussion
- 8. Use of low-grade PRs
- 9. The nature of P release from PR/S/Cult
- 10. Use of PR/S/Cult for organic farms
- 11. PR/S/Cult as a sulfur fertilizer
- 12. Industrial-scale production of PR/S/Cult
- 13. Production benefits of PR/S/Cult fertilizers
- 13.1. Economic benefits
- 13.2. Environmental advantages
- Acknowledgments
- Appendix. Model search and use in meta-analysis of fertilizer trials
- Data
- Model search
- References
- Chapter Five: Automation in drip irrigation for enhancing water use efficiency in cereal systems of South Asia: Status an ...
- 1. Introduction
- 2. Water in agriculture: Present and future scenarios
- 2.1. Current situation and challenges
- 2.2. Future trends in water use
- 3. Current status of water management in agriculture: Tools and techniques
- 3.1. Micro-irrigation in agriculture: Progress and prospects
- 3.1.1. Sprinkler irrigation
- 3.1.2. Surface drip irrigation
- 3.1.3. Sub-surface drip irrigation
- 4. Scheduling for drip irrigation systems
- 4.1. Climate-based approaches
- 4.2. Evaporation-based approach
- 4.3. Soil-based approach.
- 4.4. Plant-based approach
- 4.5. Deficit-irrigation approach
- 5. Designing automated drip irrigation systems
- 5.1. Sensors and methods
- 5.1.1. Communication techniques
- 5.1.1.1. Wireless sensor networks (WSNs)
- 5.1.1.2. Internet of Things (IoT) for precision irrigation systems
- 5.1.1.3. Global system for mobile communications (GSM)-based wireless network for automated irrigation systems
- 5.2. Case studies of different irrigation automation schemes
- 5.2.1. Tensiometer and capacitance-based automation
- 5.2.2. Smart phone and solar power-based irrigation automation
- 5.2.3. Combination of soil and weather sensors-based automation
- 5.3. Impact of irrigation automation on crop productivity and water saving
- 6. Artificial intelligence-based automated irrigation system
- 7. Examples of automated drip irrigation systems in cereal systems of South Asia
- 7.1. Plot-scale evidence on automated drip irrigation in the rice-wheat system
- 7.2. Landscape-scale evidence on automated drip irrigation systems
- 8. Conclusions
- 9. The way forward
- Acknowledgments
- References
- Index.