Downy mildew is considered a major disease in all sunflower producing countries in Europe. Downy mildew can cause significant crop damage by killing or stunting infected plants, reducing crop stands and causing yield loss.
Despite the widespread distribution, downy mildew is listed as a quarantine organism in Europe. Even low disease levels can have severe implications for sunflower production and export of seeds.
Downy mildew is a soil borne disease that is caused by Plasmopara halstedii, an oomycete pathogen. Fungicide seed treatment and genetic resistance are effective management tools for downy mildew.
In external research trials with leading university experts, sunflower seed treated with Lumisena™ showed a significantly lower incidence of downy mildew in comparison to existing fungicide seed treatments.
In 29 research trials in field across Europe, Lumisena™ showed 84% fewer downy mildew infected plants compared to untreated plots - with no cross resistance to existing fungicides.
Compared to the current reference in the market, Lumisena provides a stronger and more consistent protection against downy mildew.
Albugo, white rust can be confused with downy mildew symptoms.
Symptoms of white rust can be spectacular, but losses are usually low. However, a strong leaf attack, associated with pressure from other end-of-cycle diseases, may interfere with proper seed filling and may result in seed abortion. The albugo on leaves is characterized by blistering yellow-green spots, arranged rather in the apical part of limb. Most often creamy pustules (crusts) are visible on the underside of these blisters. In general, damage is low. No control measures are available today.