For Argentine Fleabane, only one mode of action has resulted in a case of resistance.
A first case of glyphosate resistance (HRAC 9) was confirmed in Valais in 2020. Bearing in mind this species’ ability to develop resistance in other countries and the difficulty of treating all the plants at the optimal stage, careful monitoring of the reaction of Conyza species to herbicides is recommended.
Biennial autumn dicot of the Asteraceae family
Colonised crops |
All types of crops but mainly perennial crops, wasteland, field margins and roadsides |
Favourable conditions |
Low-diversity rotations, infrequent ploughing. Sunny, warm locations |
Preferred soils |
Light, slightly saline, basic-pH soils |
Germination window |
Year-round |
Pollination |
Mainly by self-pollination but also by wind cross-pollination |
EPPO code |
ERIBO |
