This publication provides information on product and management updates, the role of pre-emergence herbicides in glyphosate-resistant crops, corn and soybean herbicide effectiveness ratings, herbicide package mixes, and herbicide site of action and injury symptoms (2018). Source: Iowa State University. Links embedded on this page may take you away from the Take Action website. The United Soybean Board/Take Action is not responsible for the content and/or claims made by websites not overseen by the soy checkoff.