Boron is one of the essential micro nutrients for higher plants growth and development, and more and more studies have been conducted to establish boron as an essential element in animals and humans. This book reviews all aspects of boron research in recent years and is based on the Third International Symposium on all Aspects of Plant and Animal Boron Nutrition which was held in Wuhan, P.R. China in 2005. This includes B sorption mechanisms in soils, deficiency and toxicity of B, B fertilizer application and basic research on the physiology and molecular biology of plant B nutrition, and nutritional function of B in animals and humans. This book is aimed at scientists, Masters or Ph. D. students focusing on boron research field, as well as providing managers involved in agricultural production with an important reference to recent developments in boron nutrition research.