Herbicide Group #, Name, Symptomology

Group 1

ACCase Inhibitors

Group 2

ALS Inhibitor

Group 3

Microtubule Assembly Inhibitor

Group 4

Auxin Mimic

Group 5

Photosystem II Inhibitor

Group 9

EPSP Synthase Inhibitor

Group 10

Glutamine Synthase Inhibitor

Group 13

DOXP Inhibitor

Group 14

PPO Inhi

Group 15

Very Long Chain Fatty Acid Inhibitor

Group 22

Photosystem I Electron Diverter

Group 27

HPPD Inhibitor

ACCase Symptoms

chlorosis to necrosis and chlorotic regions

ALS Symptoms

shortened internodes and stunted seeds

ESPS Symptoms

yellowing to death

Auxin Symptoms

epinasty

Photo II Symptoms

chlorosis / necrosis on leaf tips

Glutamine Symptoms

necrotic margins

HPPD Symptoms

bleaching

DOXP Symptoms

bleaching

PPO Symptoms

chorotic veins / bronzing

Photo I Symptoms

water lesions

Microtubule Symptoms

purple shoots

Very Long Chain Symptoms

buggy whipping / drawstring