Purple coneflower plant as affected by PGR herbicide drift.
|Severity:||Can vary out of 5|
|Frequency:||out of 5|
The growth regulator compounds mimic different growth regulating compounds in the plant and may cause a variety of growth abnormalities in susceptible species. The injury symptoms generally are first seen in the newly developing tissue or leaves.
Benzoic Acids: dicamba (Banvel, Clarity, and a component of Marksman and Distinct)
Phenoxyacetic acids: 2,4-D, 2,4-DB, MCPP, and MCPA.
Pyridinecarboxylic acids: clopyralid (Stinger, Lontrel, and a component of Curtail), fluroxypyr (Starane, Spotlight, and Vista), picloram (Tordon) and triclopyr (Garlon and Turflon Ester).
Characteristics of activity:
Symptoms of Injury: