Kava is an herb that has been used for ceremonial, ritual, religious, social, political, and medicinal purposes for centuries. In the past few decades, kava has been widely marketed as an over-the-counter treatment for anxiety, stress, restlessness, and sleep disorders. Kava: From Ethnology to Pharmacology describes the history, botanical origins, production, economic aspects, and chemical and biological properties of this medicinal herb. A major part of the book focuses on the chemical and pharmacological properties of kavalactones, the psychoactive constituents of kava that reportedly have sedative, anxiolytic, analgesic, local anesthetic, anticonvulsant, and neuroprotective properties. Clinical and medical studies that provide evidence of kava's therapeutic benefits are balanced with an assessment of the known adverse effects and interactions in which kava has been implicated. With contributions from experts in the field, this volume presents a comprehensive view of the traditional aspects of kava and the latest applications for the herb. It is a valuable reference for botanists, phytochemists, toxicologists, physicians, pharmacists, herbalists, and alternative medicine practitioners.

Covering all aspects of practical plant nematology in subtropical and tropical agriculture, the third edition of this definitive global reference work is fully revised and in full colour throughout. It covers the presence, distribution, symptomology and management of all economically important plant parasitic nematodes damaging the world's major food and cash crops. This includes: rice, cereals, solanum and sweet potatoes (and other root and tuber crops), food legumes, vegetables, peanut, citrus, fruit tree crops, coconut and other palms, coffee, cocoa, tea, bananas, sugarcane, tobacco, pineapple, cotton, other tropical fibres, spices and medicinal plants. New content for this edition includes: A chapter on nematode soil biodiversity and soil health; Reflections on the future impact of nematodes and nematology on food security; The importance of climate change, emerging threats, and new management technologies for large and small subsistence growers; Significant revisions to the IPM chapter and chapters on vegetables, citrus, legumes, tuber crops, cotton, peanut and banana where major advances in nematode management have occurred. This book is highly illustrated, with up-to-date practical guidance on methods of extraction, processing and diagnosing of different plant and soil nematodes and on integrated pest management. It remains an invaluable resource for those studying and working in the area of crop protection.