In an effort to eradicate the growing concerns posed by weeds in agricultural output, this book provides readers with an insight on herbicide use. Among the various pesticides used globally for control of weed and other undesirable plants in agricultural and related environments, herbicides are one of the most extensively used. Intense research is being continuously carried out in this field because of its excellent capability to control weed, while minimizing adverse effects on the ecological systems. Currently, a broad spectrum of research work is being carried out to focus on better use of herbicides while monitoring their impact on the environment. Even in medicine, herbicide has found extensive applications. In this book, experts involved in study and research of pesticides have collaborated to document and compile a multitude of topics pertaining to herbicide research.