Herbicide Resistant Common Ragweed in the Region
Mark VanGessel, Extension Weed Specialist; mjv@udel.edu and Frank D’Amico Some common ragweed in the region (DE, MD, and NJ) have evolved resistance to glyphosate, PPO-herbicides (Group 14), and ALS-herbicides (Group 2). Some populations are resistant only to glyphosate, others are… Continue Reading