Synopsis Intensive research in the ways to combat a vast array of pest and disease of crops of agricultural importance especially over the twentieth century has provided a multitude of control tactics. Most of these rely on the use of exotic chemicals which although give a quick and convincing control, also involve immediate and/or cumulative environmental hazards. A large number of eco-friendly methods are also known, some of which are the results of long human experiences while others have been formulated after scientific studies on the ecological relationships between the crop pest/pathogen-environment complex. These methods individually may give a less spectacular and limited degree of control but combinations of more than one can provide practically feasible, economical and ecofriendly methods of integrated multiple pest management tactics. In order to gather systemic information and planning, this book is an efforts to achieve the objectives like how to manage the noxious insect pest disease and nematodes including weeds effectively so that the populations of these harm creatures remain below the threshold level under field conditions.