This presentation will help growers, consultants, and other practitioners throughout the U.S. understand physiology in the context of yield. The first section of the talk will provide an overview of key stages in soybean growth and development. The second section covers stress, particularly timing of the stress. As the viewer will see, not all stress is equal, and stress applied at different stages within soy development results in different yields. The third section covers management of light in soybean through seeding rates. Soybeans at lower plant populations allow for high light interception…and yield.