Market insight 
                    
                        -
                        Post-emergent herbicides 
                    
                
                Group 14 herbicides in the northern cropping belt
                        
                            June 5, 2025
                         
                        
                        | 
                        
                            
                            6 min read
                        
                        
                    
                
                
                    
                        Group 14 herbicides are inhibitors of the protoporphyrinogen oxidase (PPO) enzyme.
In post-emergence applications, the absorbed herbicide inhibits PPO located in the outer envelope of plant chloroplasts, causing the protoporphyrinogen (protogen) precursor to leak out into the cytoplasm.