There is dearth of textbooks on botanical pesticides at a time when demand for green pesticides and organic farming is on rise. This book deals with all aspects of major classes of plant pesticides such as natural pyrethrins. nicotinoids. ryanodine. sabadilla. neem (with special reference to azadirachtin and its components). fungicides. nematicides. molluscicides. rodenticides. plant growth regulators. semiochemicals and allelochemicals in ten chapters. Eleventh chapter has been especially devoted for bioassay guided isolation. characterization of the above mentioned botanical pesticides and their new molecules using modern spectroscopic techniques. It also catalogues chemical structures and pesticidal activities of major classes of phytochemicals. and wherever necessary. appropriate information is presented on the topics such as biological activities, toxicology. stereochemistry. resistance. structure-activity relationship. and commercial data. It is hoped that the contents of this book will be useful for the students, teachers. scientists and industrialists alike 1 introduction. 2 insecticides. 3 fungicides. 4 nematicides. 5 rodenticides. 6 molluscicides. 7 plant growth regulators. 8 insect growth regulators. 9 semiochemicals. 10 allelochemicals. 11 methods for isolation. Purification and identification of botanical pesticides.