A multitude of companies makes Seed Treatment Fungicides available both on the farm and for on the road use. Seed treatment fungicides are designed to control and protect a variety of species of plants that can cause agricultural damage. Commonly used fungicides are generally either non-selective (which means they prevent any seeds from germinating) or selective (which means that some seeds will germinate and grow roots to cause damage to the crop). These products are made from natural chemicals and may be combined with fertilizers, herbicides, or pesticides.