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Managing irrigation for soil health in arid and semi-arid regions

Code: 9781786764096
Jeffrey Peter Mitchell and Howard Ferris, University of California-Davis, USA; Anil Shrestha, California State University-Fresno, USA; Francis Larney, Agriculture and Agri-Food Canada, Canada; and Garrison Sposito, University of California-Berkeley, USA

Chapter synopsis: Irrigated arid and semi-arid regions of the world account for more than 40% of the global crop production. Managing soil health while simultaneously increasing water use efficiency in these areas is challenging, but critical to future global food security. This chapter describes production practices such as no-tillage and surface residue preservation that maximize both water infiltration into soil and soil water retention, reduce runoff and evaporation and thereby increase the productive flow of water via transpiration. The chapter summarizes recent information on the application of soil health management principles in irrigated and dry land arid and semi-arid environments, including examples of cost–benefit trade-offs associated with reduced-disturbance no-tillage systems and the use of cover crops. The chapter looks ahead to future trends in this area and suggests further reading for those interested in researching further.

DOI: 10.19103/AS.2017.0033.24
Table of contents 1 Introduction 2 Arid and semi-arid regions 3 No-till cropping systems 4 Cover cropping systems 5 Soil food web management for nitrogen availability in arid and semi-arid areas 6 Conclusion 7 Future trends 8 Where to look for further information 9 References

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