Instant Insights: Nitrogen-use efficiency

Description

This book features five peer-reviewed reviews on improving nitrogen-use efficiency (NUE).

The first chapter provides an overview of the recent advances in optimising NUE in crop production, focussing on broadacre cereals and oilseeds. The chapter also addresses the impact of underfertilisation and overfertilisation on crop yield, grain quality and profit.

The second chapter outlines recent advances in understanding nitrogen (N) cycling in soil, as well as the main issues researchers and farmers are presented with when attempting to optimise productivity while minimising environmental impacts.

The third chapter considers the ways in which molecular interventions can be used to optimise crop NUE in rice and how these interventions can contribute towards producing rice genotypes with high yields at low N-inputs.

The fourth chapter reviews the principal mechanisms of N-uptake and efficient capture by crop root systems. The chapter also details the impact of abiotic stress factors on N-uptake and proliferation, such as soil structure and overall health.

The final chapter reviews the role of traits related to N-uptake, N-assimilation and N-remobilisation in breeding more efficient varieties of wheat. The chapter also discusses future major research trends, such as high-throughput phenotyping.

Table of contents

• Chapter 1 - Advances in optimising nitrogen-use efficiency in crop production: J. F. Angus, CSIRO Agriculture and Food and Graham Centre – Charles Sturt University, Australia;
  • 1 Introduction
  • 2 Some definitions of nitrogen-use efficiency
  • 3 Nitrogen demand and supply
  • 4 Practices to increase nitrogen-use efficiency
  • 5 Nitrogen overuse
  • 6 Conclusion
  • 7 Acknowledgement
  • 8 Where to look for further information
  • 9 References

Chapter taken from: Rengel, Z. (ed.), Achieving sustainable crop nutrition, Burleigh Dodds Science Publishing, Cambridge, UK, 2020, (ISBN: 978 1 78676 312 9)

• Chapter 2 - Advances in understanding nitrogen cycling in soil: Samantha Earl-Goulet, Claudia Wagner-Riddle and Laura Van Eerd, University of Guelph, Canada; and Kate Congreves, University of Saskatchewan, Canada;
  • 1 Introduction
  • 2 Case studies
  • 3 Conclusion and future research trends
  • 4 Where to look for further information
  • 5 References

Chapter taken from: Ladha, J. K. (ed.), Improving nitrogen use efficiency in crop production, Burleigh Dodds Science Publishing, Cambridge, UK, 2024, (ISBN: 978 1 80146 470 3)

• Chapter 3 - Molecular interventions for improving crop nitrogen use efficiency: trends, opportunities and challenges in rice: Dinesh Kumar Jaiswal and Nandula Raghuram, Centre for Sustainable Nitrogen and Nutrient Management, University School of Biotechnology, Guru Gobind Singh Indraprastha University, India;
  • 1 Introduction
  • 2 Definition and selection of nitrogen use efficiency indices
  • 3 Nitrogen management practices for improved nitrogen use efficiency
  • 4 Biological intervention for nitrogen use efficiency improvement
  • 5 Conclusion and future prospects
  • 6 Where to look for further information
  • 7 Acknowledgements
  • 8 References

Chapter taken from: Ladha, J. K. (ed.), Improving nitrogen use efficiency in crop production, Burleigh Dodds Science Publishing, Cambridge, UK, 2024, (ISBN: 978 1 80146 470 3)

• Chapter 4 - Advances in the understanding of nitrogen (N) uptake by plant roots: Malcolm J. Hawkesford and William R. Whalley, Rothamsted Research, UK;
  • 1 Introduction
  • 2 Nitrogen in the soil
  • 3 Nitrogen uptake and NUE in agriculture
  • 4 Genetic variation in NUE and roots
  • 5 Transporters involved in nitrogen uptake
  • 6 Root responses to nitrogen availability
  • 7 Effects of soil conditions and structure on root N-uptake and proliferation
  • 8 Future trends for crop improvement
  • 9 Acknowledgements
  • 10 Where to look for further information
  • 11 References

Chapter taken from: Gregory, P. J. (ed.), Understanding and improving crop root function, Burleigh Dodds Science Publishing, Cambridge, UK, 2019, (ISBN: 978 1 78676 360 0)

• Chapter 5 - Improving the uptake and assimilation of nitrogen in wheat plants: Jacques Le Gouis, INRA, France and Malcolm Hawkesford, Rothamsted Research, UK;
  • 1 Introduction
  • 2 Nitrogen uptake
  • 3 Nitrogen assimilation
  • 4 Nitrogen remobilization
  • 5 Future trends in research
  • 6 Where to look for further information
  • 7 Acknowledgements
  • 8 References

Chapter taken from: Langridge, P. (ed.), Achieving sustainable cultivation of wheat Volume 1: Breeding, quality traits, pests and diseases, Burleigh Dodds Science Publishing , Cambridge, UK, 2017, ISBN: 978 1 78676 016 6)