Legume crops affect the current global phosphorus (P) cycle through their continued demand for P fertilizer, and the subsequent removal of P from fields in the harvested seeds. Breeding crops that can yield well with fewer P inputs (i.e., P-efficient crops) may reduce the impact of legume crops on the P cycle. This book is divided into six chapters. Chapter 1- gives a brief summary of the book. Chapter-2 gives the introduction of the book highlighting the significance of the work. Chapter-3 is a compilation of relevant literature indicating the present status of the problem. Chapter- 4 deals...