Biodynamic agriculture first originated in central Europe but is now practised in farms, vineyards and gardens all over the world. At the heart of the biodynamic approach are the eight preparations -- Horn manure, Horn silica, Yarrow, Chamomile, Nettle, Oak bark, Dandelion and Valerian -- which are often produced by local biodynamic practitioners using well-established recipes. But as the biodynamic approach expands beyond its European origins, its methods have been increasingly adapted to meet the needs and challenges -- climates, fauna, seasons and regulations -- of different regions around the globe. This fascinating book presents the results of a unique study, carried out by the Agricultural Section at the Goetheanum, Switzerland, into how the biodynamic preparations are used in fifteen countries worldwide, including Egypt, Brazil, New Zealand, India and across Europe. The detailed case studies explore how the preparations are modified to suit their locations, as well as offering an insight into the work of each practitioner and how their understanding has evolved over the years. Contributors include Ueli Hurter, Dr. R. Ingold, Dr. M. Kolar, J. Schoenfelder, Dr. A. Sedlmayr and A. van Leewen. This book is a valuable reference into the production and application of the preparations around the world and an inspiring endorsement of how biodynamic principles hold true in such varied environments.

Arsenic in Plants Comprehensive resource detailing the chemistry, toxicity and impact of arsenic in plants, and solutions to the problem Arsenic in Plants: Uptake, Consequences and Remediation Techniques provides comprehensive coverage of the subject, detailing arsenic in our environment, the usage of arsenicals in crop fields, phytotoxicity of arsenic and arsenic's impact on the morphology, anatomy and quantitative and qualitative traits of different plant groups, including their physiology and biochemistry. The work emphasizes the occurrence of arsenic, its speciation and transportation in plants, and differences in mechanisms of tolerance in hyper-accumulator and non-accumulator plants. Throughout the text, the highly qualified authors delve into every facet of the interaction of arsenic with plants, including the ionomics, genomics, transcriptomics and proteomics in relation to arsenic toxicity, impact of exogenous phytohormones and growth-regulating substances, management of arsenic contamination in the soil-plant continuum, phytoremediation of arsenic toxicity and physical removal of arsenic from water. General discussion has also been included on subjects such as the ways through which this metalloid affects plant and human systems. Topics covered include: Introduction and historical background of arsenic and the mechanism of arsenic transport and metabolism in plants Arsenic-induced responses in plants, including impact on biochemical processes and different plant groups, from cyanobacteria to higher plants The role of phytohormones, mineral nutrients, metabolites and signaling molecules in regulating arsenic-induced toxicity in plants Genomic, proteomic, metabolomic, ionomic and transcriptional regulation during arsenic stress Strategies to reduce the arsenic contamination in soil-plant systems and arsenic removal by phytoremediation techniques Researchers, academics, and students of plant physiology, biotechnology, and agriculture will find valuable information in Arsenic in Plants to understand this pressing subject in full, along with its implications and how we can adapt our strategies and behaviors to promote reduced contamination through practical applications.