Rice is the major staple food in Asia, and food security means rice security for most Asians. By the year 2025, we need to produce about 60% more rice than we do today to meet the growing demand. Efficient use of inputs is vital to safely produce the additional food from limited resources with minimal impact on the environment. This book reviews emerging knowledge-intensive technologies and decision aids for improved nutrient management in rice, technology adoption constraints at the farm level, and innovative approaches for field evaluation and promotion of new technologies to farmers. It is highly useful to rice scientists and development workers, students of agronomy, soil science, and plant nutrition, and crop consultants and extension workers in rice all over the world.

Inhalt
I: Nutrient Management Strategies and Options.- *1. Strategies for nutrient management in irrigated and rainfed lowland rice systems.- *2. Sustaining productivity of lowland rice soils: issues and options related to N availability.- *3. Interpreting fertilizer use efficiency in relation to soil nutrient-supplying capacity, factor productivity, and agronomic efficiency.- *4. Nitrogen placement technologies for productivity, profitability, and environmental quality of rainfed lowland rice system.- *5. On-farm adaptation of knowledge-intensive nitrogen management technologies for rice systems.- 6. Resource management options for upland areas of Indonesia.- *7. The role of legume fallows in intensified upland rice-based systems of West Africa.- *8. Soil and crop management technologies for enhancing rice production under micronutrient constraints.- 9. Strategies for developing and promoting innovative fertilizer formulations for efficient crop production: industry's view.- II: Farmer Adoption of Nutrient Management Technologies: Constraints and Opportunities.- *10. Farmer adoption of improved nitrogen management technologies in rice farming: technical constraints and opportunities for improvement.- *11. Adoption of nutrient management technologies for rice production: economic and institutional constraints and opportunities.- *12. Government policy support for technology promotion and adoption: a case study of urea tablet technology in Indonesia.- III: Approaches and Methodologies for Evaluation and Promotion of Crop and Resource Management Technologies.- 13. High-impact strategy: useful principles and practices for the effective delivery of research products.- 14. From-research-to-farmer practice: a case study in rice pest management.- 15. Ecosystem analysis-basedmethodology for technology extrapolation.- 16. Assessment Institute for Agricultural Technology (AIAT) for evaluation and dissemination of crop production technologies in Indonesia.- 17. Front-line demonstrations for evaluating and promoting new technologies in rice systems in India.- 18. A critical review of outreach research program in technology evaluation, adaptation, and dissemination for rice farmers in Nepal.- 19. South-South cooperation: Indonesian apprenticeship program for African rice farmers.- 20. Technology evaluation, adaptation, and dissemination for efficient fertilizer use in rice systems in India - a cooperative's experience.- 21. Grass roots organization for promoting sustainable agriculture and food security: the experience of Grameen Bank in Bangladesh.- 22. Increasing the impact of public-sector agricultural engineering research, development, and transfer.- 23. Organizing experimenting farmers for participation in agricultural research and technology development.