Jun. 5, 2017
Syngenta announced the launch of Plenaris, a fungicide for seed treatment to control the downy mildew on sunflower in Argentina. It has oxathiapiprolin, a new chemical with a new mode of action, for the control of fungicidal diseases caused by oomycetes, it mentioned.
The downy mildew (plasmopara halstedii) is the major disease affecting sunflower seeds, delaying growth, causing discoloration of flowers and reduction of root growth. The infected plants do not form a head on the flower and reduce severely the yields, the company noted.
The product, which will have a capacity to offer four different modes of action to combat this pathogen, will be sold first in the United States in 2017, followed by in Argentina, according to information given by Syngenta.
In Brazil, the molecule oxathiapiprolin was registered in April 2014 by DuPont, but Syngenta told AgroPages that there was no plan to launch the product in Brazil.
The physiological race of plasmopara halstedii that occurred on sunflower plants at the experimental field of Embrapa Soja in Londrina, state of Paraná, were collected in 1998, 2001 and 2002.