This textbook "Communication Technologies in Agriculture" will be a comprehensive book with 24 chapters which covers the old wisdom and also the new horizons in innovations and trends in Agricultural Extension for all those who are associated with Agricultural Extension as a student, scholar, researcher and practitioner. This book would serve to the information needs of all the stake holders in the change process. More fittingly, the Under Graduate students of Agriculture and Horticulture and Post Graduate students of Agricultural Extension, Mass Communication and Rural Development who would use it for enriching their theoretical requirements.