Plant diseases in maize, sugarbeet, wheat, rye, barley and rapeseed - recognizing, treating, assuring yield

The ergot pathogen (Claviceps purpurea) forms yellowish sticky drops (honeydew) on individual fruits during flowering. Later, the dark purple or even white horn-shaped ergots appear, which develop instead of the cereals.

On the rye, mildew is usually diagnosed on the leaf blades as whitish and cotton-like mycelium plaques. Later these coverings turn brown with small black cleistothecium.

Rhynchosporium secalis is one of the main diseases of winter barley, but rye is also affected by this pathogen. On winter rye, the lower leaves are usually affected.

Microdochium nivale is one of the important seedling parasites in winter rye. At high humidity and CO2 accumulation under prolonged snow cover, Microdochium nivale can lead to a parasitic winter damage and make a transition in the area necessary.

The most important disease in rye cultivation is brown rust. Even when occurring in late developmental stages, it can lead to large yield losses. In addition to grain yield, brown rust also affects the grain quality.