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Synopsis Remote Sensing is a multidisciplinary and interdisciplinary science dealing with the collection of the information on natural resources from distance using electromagnetic energy. The principles involved in the process is interaction of radiation with the matter and their surface. Different techniques and technologies have been developed to collect the information and their interpretation. In this fast changing environmental conditions and degradation accurate information on environmental resources is essential. This can be achieved through remote sensing satellites. This book brings out the principles and techniques employed in agriculture. It has various applications in agricultural resource utilization, management, monitoring and forecasting crop production. This science includes the study of physics of radiation, interaction of radiation with atmosphere, earth surface features, like soil, water and vegetation, different types of sensors and satellites. This science is developing with the technological advancement. Due to its importance and usefulness, it has emerged and recognized as a separate branch of science in educational institutions and in government departments. Students need precise information about the subject for preparing for their examinations. In a modest way, the authors have tried to incorporate to the point information of the subject in simple manner.