This open access book highlights concepts discussed at two international conferences that
brought together world-renowned scientists to advance the science of potassium (K)
recommendations for crops. There was general agreement that the potassium recommendations
currently in general use are oversimplified outdated and jeopardize soil plant and human
health. Accordingly this book puts forward a significantly expanded K cycle that more
accurately depicts K inputs losses and transformations in soils. This new cycle serves as both
the conceptual basis for the scientific discussions in this book and a framework upon which to
build future improvements. Previously used approaches are critically reviewed and assessed not
only for their relevance to future enhancements but also for their use as metrics of
sustainability. An initial effort is made to link K nutrition in crops and K nutrition in
humans. The book offers an invaluable asset for graduate students educators industry
scientists data scientists and advanced agronomists.
