Contents -- Contributors -- Foreword -- Acknowledgements -- Acronyms and Abbreviations -- Tables and Figures -- Part I: Introduction -- 1 Why Natural Resource Management Research? -- 2 The History of Natural Resource Management Research in the CGIAR -- 3 Productivity Enhancement and Natural Resource Management -- Part II: Natural Resource Management Case Studies: What Do They Tell Us? -- 4 Natural Resource Management Case Studies: Overview and Summary -- 5 CIMMYT. Assessing the Impact of Natural Resource Management Research: the Case of Zero Tillage in India's Rice-Wheat Systems -- 6 CIAT. Impact of Participatory Natural Resource Management Research in Cassava-based Cropping Systems in Vietnam and Thailand -- 7 WorldFish Centre. Impact of the Development and Dissemination of Integrated Aquaculture-Agriculture Technologies in Malawi -- 8 World Agroforestry Centre. Impacts of Improved Tree Fallow Technology in Zambia -- 9 ICARDA. Ex post Impact Assessment of Natural Resource Management Technologies in Crop-Livestock Systems in Dry Areas of Morocco and Tunisia -- 10 IWMI. Assessing the Outcome of IWMI's Research and Interventions on Irrigation Management Transfer -- 11 CIFOR. The Sustainability of Forest Management: Assessing the Impact of CIFOR Criteria and Indicators Research -- Part III: Lessons Learned and the Way Ahead -- 12 The Major Lessons from the Case Studies -- 13 The Way Ahead - Impact Assessment of Natural Resource Management Research -- Index -- A -- C -- E -- F -- G -- H -- I -- M -- N -- P -- R -- S -- T -- V -- W -- Z.