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Full Description
This book features four peer-reviewed reviews on the recent advances in fertiliser use and fertiliser technology in agriculture.
The first chapter describes features of field crop sprayers for precision agriculture, including control of delivered dose, spatial resolution, matching physical characteristics of sprays to target requirements and minimising drift and exposure of systems outside the treatment area.
The second chapter reviews the range of system inputs that are used to inform site-specific nutrient management systems. The chapter also includes examples from the Midwestern and Western regions of the United States to illustrate system processes and outputs.
The third chapter discusses the history, current status, and future needs of fertiliser developments in light of the goal of global sustainability for both agriculturally advanced and deficient areas. It reviews developments in using efficient fertilisers sources using proper techniques of rate, placement, and timing to meet the needs of advancing yields of modern crop cultivars.
The final chapter reviews the latest research on the ways that fertigation can be used to optimise the fertiliser application process, focussing on the '4Rs' principle. The chapter discusses nutrient consumption curves and supply, optimising irrigation efficiency, as well as the use of models and decision support systems to support fertigation systems.
Contents
Chapter 1 - Spray technologies in precision agriculture: Paul Miller, Silsoe Spray Applications Unit Ltd, UK;
1 Introduction
2 Features of field crop sprayers for precision agriculture
3 Case study 1: designing and developing a system for spot treatment of volunteer potatoes
4 Case study 2: a patch spraying system for applying herbicides to field crops
5 Conclusion
6 Future trends
7 Where to look for further information
8 References
Chapter 2 - Site-specific nutrient management systems: Dan S. Long, USDA-ARS, USA;
1 Introduction
2 Processes to inform site-specific nutrient management
3 Regional perspectives
4 Conclusions and future trends
5 Where to look for further information
6 References
Chapter 3 - Developments in the use of fertilizers: Bryan G. Hopkins, Brigham Young University, USA;
1 Introduction
2 Nutrient pollution and resource depletion
3 Achieving more sustainable use of fertilizers
4 Developments in nitrogen fertilizers
5 Developments in phosphorus fertilizers
6 Developments in potassium fertilizers
7 Developments in sulfur fertilizers
8 Developments in calcium, magnesium, and micronutrient fertilizers
9 Case study
10 Conclusion and future trends
11 Where to look for further information
12 References
Chapter 4 - Advances in fertigation techniques to optimize crop nutrition: Asher Bar-Tal, Uri Yermiyahu and Alon Ben-Gal, Agricultural Research Organization (ARO), Israel;
1 Introduction
2 The right rate at the right time: nutrient consumption curves and supply
3 Irrigation frequency
4 The right place: water, salt, nutrient and root development under irrigation
5 The right source: fertilizer type and source
6 Models and decision support tools for design, operation and optimization of fertigation systems
7 Case studies
8 Conclusion
9 Future trends
10 References
