This publication documents the proceedings of a workshop on 'Micronutrients in South and South East Asia' held in Kathmandu In September 2004. The workshop was intended to establish the status of current knowledge and identify future research needs related to micronutrients in South and South East Asia. Plant nutrients are essential for producing sufficient and healthy food for the world's expanding population. Soil micronutrient deficiencies not only affect crop growth, the crops themselves also display micronutrient deficiencies and thus produce nutrient deficient food; and the people depending on these foods then also display symptoms of deficiency. The majority of agricultural land in South Asia is severely affected by one or more micronutrient imbalances; and the majority of people in the region are suffering from micronutrient deficiencies. The workshop participants included researchers concerned with human nutrition and other disciplines as well agriculturalists and soil scientists. The broad range of themes together illuminated a comprehensive picture of the complexities of micronutrient issues, as did the variety of measures discussed to address the problems. With this publication, we hope to share this knowledge with the many people concerned with soils, agriculture, and human nutrition in developing countries across the world.