Sunflower with a systemic downy mildew infection next to a healthy sunflower. Note: plant stunting with deformed and yellowing leaves.
Sunflower with a systemic downy mildew infection next to a healthy sunflower. Note: plant stunting with deformed and yellowing leaves.

Field reports from North Dakota and South Dakota filed by Syngenta representatives last week said downy mildew is being reported in both states’ sunflower fields.

Syngenta representatives who specialize in assisting sunflower growers note that downy mildew can be controlled without yield loss. They noted the following:

  • Downy mildew generally favors cool temperatures and high relative humidity.
  • By monitoring and proactively implementing the right cultural and chemical management practices, growers can manage the disease and preserve yield.

More information for sunflower growers, which explains more about the situation but also promotes Syngenta’s products, is the company’s Know More, Grow More blog post and the infographic, Sunflower Success: Defeating Downy Mildew.