Insecticides: Toxicology And Uses
About this eBook
The problem to control pests is as old as agriculture. In earlier times control on a large and effective scale was not possible. The shifting ecologi cal balances of pests and other species led to levels of attack which varied widely from year to year. The earliest attempts to control pests were basi cally by the use of naturally occurring toxic substances, like plant extracts, arsenicals etc. The era of modern synthetic pesticides largely dates from 1939 when the insecticidal properties of DDT were discovered. Insecticides, the chemicals used to control harmfuJ insect pests play an important role in modern agriculture. Although they are used extensively for protection of agricultural crops against noxious pests yet they are thought to be major pollutants of food and environment. This book furnishes a detailed account of insecticides, their formula tions, properties, mode of action, biotransformation, toxicity evaluation, the problem of resistance, residues and environmental contamination. Stress has been laid on biopesticides, the ways and means towards safe use of insecticides to avoid insecticidal hazards and the intervention of insecticides in IPM programme. The Insecticides Act, 1968 which regulates the import, manufacture, sale, transportation, distribution and uses of insecticides is also explained. Thus, this book will be of great use to enlighten students, extension workers, traders, planners and all concerned with agriculture. Though sufficient literature is available on insecticides I, have tried to compile few aspects on insecticides, toxicology and their uses, arranging them in a way for clear understanding of the readers. I take this opportunity to thank my colleagues and students who provided valuable advice, criticism and assistance during the writing of the manuscript of this compendium. I owe my gratitude to my parents and all family members, who inspired me for writing and assisted me in various ways. I am also thankful to Agrotech Publishing Academy for the publication of this book. I must stress, however, that I accept the responsibility for any errors that occur in the text. Suggestions for improvement are welcomed.
H.C.L. Gupta V
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