Chapter 1. World phosphate situation and factors affecting phosphorus availability to plants in soil -- Chapter 2. Functions of phosphorus in crop plants -- Chapter 3. Diagnostic techniques for phosphorus requirements in crop plants -- Chapter 4. Phosphorus use efficiency in crop plants -- Chapter 5. Phosphorus interactions with other nutrients -- Chapter 6. Phosphorus and the environment -- Chapter 7. Management practices for optimizing phosphorus availability to crop plants -- Chapter 8. Phosphorus nutrition research in crop plants : basic principles and methodology.