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Water Requirements for Irrigation and the Environment

  • Marinus G. Bos
  • Rob A. L. Kselik
  • Richard G. Allen
  • David J. Molden

Table of contents

  1. Front Matter
    Pages i-xvi
  2. Pages 1-12
  3. Pages 13-80
  4. Pages 103-118
  5. Back Matter
    Pages 167-174

About this book

Introduction

Irrigated agriculture produces about 40% of all food and fibre on about 16% of all cropped land.  As such, irrigated agriculture is a productive user of resources; both in terms of yield per cropped area and in yield per volume of water consumed.  Many irrigation projects, however, use (divert or withdraw) much more water than consumed by the crop. The non-consumed fraction of the water may cause a variety of undesirable effects ranging from water-logging and salinity within the irrigated area to downstram water pollution.
This book discusses all components of the water balance of an irrigated area; evapotranspiration (Ch.2), effective precipitation (Ch.3) and capillary rise from the groundwater table (Ch.4). Chapter 5 then combines all components into a water management strategy that balances actual evapotranspiration (and thus crop yield) with the groundwater balance of the irrigated area (for a substainable environment). Chapter 6 presents CRIWAR 3.0, a simulation program that combines all water balance components into a single simulation procedure. The chapter describes the use of the CRIWAR software for developing water requirement tables and other useful information based on the selected water management strategy. This version greatly expands upon the capabilities of previously published programs.

Keywords

AgroMicro Capillary rise Crop Production Evapotranspiraton Groundwater Irrigation Water balance Water management drainage

Authors and affiliations

  • Marinus G. Bos
    • 1
  • Rob A. L. Kselik
    • 2
  • Richard G. Allen
    • 3
  • David J. Molden
    • 4
  1. 1.International Institute for Geo-Information Science and Earth Observation, ITCEnschedeThe Netherlands
  2. 2.Alterra, Wageningen URWageningenThe Netherlands
  3. 3.Research and Extension CenterUniversity of IdahoKimberlyUSA
  4. 4.International Water Management Institute, IWMIColomboSri Lanka

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