This book, based on the second symposium, presents the topics addressed which include a bibliographic survey of research and development of agri-adjuvants; regulation and importance of adjuvants; rationale for adjuvant use; concerns within the pesticide industry relating to adjuvants; a review of the methods employed in laboratory evaluation of adjuvants; results of current research on various adjuvants (including organosilicone surfactants, oils, and emulsifiers) with herbicides, fungicides, insecticides, or growth regulators; and field, greenhouse, and laboratory methods for evaluating adjuvants. It is hoped that these topics will be of interest to many and that this book will promote a better understanding of the effects of adjuvants on pesticide penetration, translocation, photodegration and stability, spray deposition and dissipation, and the fate of herbicides in the environment. Also, the Organizing Committees of the first and second symposia revised and updated ‘ ‘Formulations and Applications of Adjuvants for Agrichemicals: A Selected Bibliography of World Literature in English” for use by agricultural researchers and others.