Soybean is the most crucial oilseed and livestock feed crop in the world. This is ascribed to the crop's high protein content (nearly 40% of seed weight) and oil content (approximately 20%) characteristics that cannot be competed with any other agronomic crop. Traversing the 10-year period from 2001 to 2010, world soybean production increased from 168 to 258 million metric tons (54% increase). In lieu of soybean's extraordinary ascendancy, there has been an increased research interest in the crop throughout the world. Information in this book presents an inclusive outlook of research attempts in plant physiology, agronomy, agricultural economics, and nitrogen relationships that will aid soybean stakeholders and scientists across the world.