Secondary macronutrients and micronutrients known to play many complex roles in plant development and crop yield. In many ways, they hold the key to how well the other nutrients are used. They promote the strong, steady growth of crops that produce higher yields and increase harvest quality—maximizing a plant’s genetic potential. Their presence can have a great impact on root development, fruit setting and grain filling, seed viability, and plant vigor. However, these nutrients are quickly mined out of any soil that is repeatedly farmed, resulting in the need for applying ever-increasing amounts of fertilizers to get the same crop yield.