Fleabane (Conyza spp) is a very common annual plant in the Southern part of Brazil. It is a species that causes major losses in yield and is easily spread by wind. Its production potential is over 200 thousand seeds per plant in one cycle.
Seeds germinate during fall/winter, developing during spring and summer, therefore, is characterized as a winter and summer weed.
Fleabane is considered very aggressive species due to its great capacity of dispersion; it is an erect plant, reaching up to 2 m tall depending on developmental conditions.
How to manage
In areas with resistance plants presence it is important to put into action some practices, including:
Fleabane management can be done in different opportunities, not only in pre-sowing crop desiccation. Winter is one of the best times for management, when fleabanes are small and easy to control.