Seed testing plays a pivotal role in modern agriculture. The main objective of seed testing is to assess the actual planting value of the seed in terms of its germination capacity besides determination of percentage composition of the pure seeds, weed seeds, other crop species, extraneous matter and moisture content of the submitted sample. Seed testing is the cornerstone of all other seed technologies. It is the means by which we measure the viability and all the physical factors that regulate the use and maintenance of seeds. Everything that is done with seeds should have some test information to guide the work and ensure high quality. Seed tests tell if a crop of seeds is worth collecting, if handling procedures are correct, and how many potential seedlings are available for regeneration. This book seeks to facilitate the reader to grasp the basic principles of seed testing. Bringing forth a comprehensive analysis of the subject, this work fosters an enriching learning experience for the reader.