This much-needed Second Edition of a standard resource offers a state-of-the-art, multi-disciplinary presentation of plant roots - examining structure and development, assemblage of root systems, metabolism and growth, stressful environments, and interactions at the rhizosphere.Reflecting the explosion of information that has occurred since the publication of the previous edition, Plant Roots: The Hidden Half, Second Edition provides entirely new coverage of the latest methods for investigating roots and the role of aeroponics in root research...the simulation of plant root architecture and the use of fractal geometry and scaling in describing root architecture...roots in human nutrition...the biosynthetic and medicinal potential of roots...the biology and development of root hairs...modeling of water uptake and ion uptake simulation...drought rhizogenesis and contractile roots...and much more.