Part 1 Fundamentals
1.Understanding and measuring plant water use: Gretchen R. Miller, Texas A&M University, USA;
2.Dynamics of water storage and retention in soil: K. Rajkai, Hungarian Academy of Sciences, Hungary; F. Ács, Eötvös Loránd University, Hungary; B. Tóth, Hungarian Academy of Sciences and University of Pannonia, Hungary; and A. Makó, Hungarian Academy of Sciences, Hungary;
3.Climate change and water resources for agriculture; Luis Garrote, Universidad Politécnica de Madrid, Spain;

*Part 2 Sustainable use of groundwater and surface water for irrigation
**4.An integrated approach for the estimation of crop water requirements based on soil, plant and atmospheric measurements: *N. Jovanovic, S. Dzikiti and M. Gush, Council for Scientific and Industrial Research (CSIR), South Africa;
5.The economics of groundwater development and governance; T. Shah, International Water Management Institute (IWMI), India
6.Managing surface water for irrigation; A. Qureshi, International Center for Biosaline Agriculture, United Arab Emirates

Part 3 Other sources of water for irrigation
7.Rainwater and floodwater harvesting for crop irrigation: Dieter Prinz, Karlsruhe Institute of Technology (KIT), Germany;
8.The use of treated wastewater for crop irrigation: Alfieri Pollice and Ramy Saliba, IRSA-CNR, Italy; and Antonio Lonigro, Università degli Studi di Bari, Italy;
9.Use of brackish and marginal water for irrigation in water-scarce areas: Z. Gao, China Institute of Water Resources and Hydropower Research, China;

Part 4 Irrigation techniques
10.Developments in surface irrigation techniques: Taffa Tulu, Addis Ababa University, Ethiopia;
11.Trickle irrigation systems: Megh R. Goyal, formerly University of Puerto Rico, Puerto Rico;
12.An overview of subsurface irrigation techniques: Andrea Dührkoop and Oliver Hensel, University of Kassel, Germany;
13.Fertigation techniques for efficient water and nutrient use in agriculture; Munir J. Mohammad Rusan, Jordan University of Science and Technology, Jordan and International Plant Nutrition Institute (IPNI), USA;

Part 5 Managing water use on the farm
14.Modelling water use on farms; L. S. Pereira and P. Paredes, University of Lisbon, Portugal;
15.Improving water productivity in rainfed agriculture: challenges and opportunities for small-scale farmers in dry lands: John Gowing, University of Newcastle, UK;
16.Improving water use in tropical rain-fed systems: the situation in India: Suhas P. Wani, Kaushal K. Garg, Girish Chander and K.H. Anantha, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), India;
17.Deficit irrigation and site-specific irrigation scheduling techniques to minimize water use: Susan A. O’Shaughnessy, USDA-ARS, USA; and Manuel A. Andrade, Oak Ridge Institute for Science and Education, USA;
18.Drainage systems to support sustainable water use: Henk Ritzema, Wageningen University, The Netherlands;

Part 6 Managing water resources
19.Increasing water productivity in agriculture: an overview: Wayne S. Meyer, University of Adelaide, Australia;
20.Regional strategies in sustainable water management for irrigation: the eco-efficiency approach: Mladen Todorović, Centre International de Hautes Etudes Méditerranéennes (CIHEAM), Mediterranean Agronomic Institute of Bari, Italy;
21.The challenge of sustainable water resources management under water scarcity: Pasquale Steduto, Food and Agriculture Organization of the United Nations (FAO), Italy; and Chris Perry, Former Research Director, International Water Management Institute (IWMI), UK;
22.Assessing the cost of supplying water for agriculture: the food supply cost curve: Roberto Roson, Ca’ Foscari University of Venice, Italy;

Henk Ritzema is a former Associate Professor at the Water Resources Management Chair Group of Wageningen University. He retired in September 2020. Henk Ritzema has published over 160 articles, books and reports and is a regular invited speaker at international conferences and workshops.