Conyza, an announced resistance

Pioneer in Argentina over weed´s issues, Conyza has finally got its label as a resistant weed, in Entre Ríos province.

Till now, none of both species of Conyza were declared resistant, although it was well known they both were.   Eduardo Puricelli, Delma Faccinni, Federico Balassone y Marcelo Metzler, from UNR and EEA Paraná from INTA, obtained the curve dose- respond for glyphosate herbicide in Conyza sumatrensis and Conyza boneriensis. Both biotypes were gathered in Paraná, Entre Ríos.

The founded biotypes of both species were declared resistant to glyphosate.