Wheat yellowing

The causative agent of the disease is the Closterovirus flavitritici virus, which belongs to the Closteroviridae family. This pathogen is classified as a viral infection that affects the vascular system of plants. The disease is systemic, spreading rapidly through host tissues, disrupting photosynthesis processes and overall plant development.

The main crops susceptible to this virus are cereal grains, including soft and hard wheat, barley, and rye. Some wild grass species are also at risk and can act as reservoirs for the infection during the off-season period.

Symptoms of the infection appear as characteristic yellowing of the leaf blade, often starting at the tips or edges of the leaves. As the disease progresses, chlorosis covers the entire plant, leading to stunted growth, poor tillering, and the formation of underdeveloped or sterile ears, which results in a sharp decline in crop quality.

In the field, the virus is transmitted by insect vectors, primarily aphids and leafhoppers, which spread the pathogen while feeding on the sap of infected plants. Conditions that promote the active reproduction of these pests, such as warm, dry springs and prolonged autumns, correlate directly with the intensity of viral spread across crops.

The economic impact of the virus manifests as a significant reduction in field productivity. In cases of severe infestation, grain losses can reach 30–50% or more. Protection measures include controlling insect vectors with insecticides, implementing crop rotation, eliminating reservoir weeds, and cultivating resistant varieties of cereal crops.

• Seed dressing with insecticidal agents.
• Adherence to optimal planting dates.
• Elimination of volunteer crops and grassy weeds.
• Monitoring aphid and leafhopper populations in the field.