Sticky cudweed

Sticky cudweed (lat. Pseudognaphalium viscosum) is a perennial herbaceous plant belonging to the Asteraceae family. In agronomy, it is identified as a persistent weed that aggressively colonizes disturbed landscapes, pastures, and various crop fields, challenging modern farming practices.

The plant is typically found in well-lit areas, including field margins, pastures, and cultivated rows. It thrives in soils that have undergone mechanical disturbance, quickly establishing colonies that can overwhelm newly sown crops if not managed in the early growth stages.

The biology of this weed is defined by its sticky, glandular hairs that cover the leaves and stems. This feature acts as a biological defense mechanism against certain insect pests and harsh environmental conditions. The plant is highly effective at wind-dispersing its seeds, ensuring rapid spread across large agricultural zones.

The economic impact of Sticky cudweed is significant due to its competitive nature for soil nutrients, sunlight, and moisture. In pasture settings, its presence reduces the overall palatability and biomass production of forage, leading to losses in livestock productivity and potential degradation of grazing quality.

Integrated weed management is crucial for suppressing this species. Agronomic practices should focus on repeated mechanical cultivation and the timely mowing of field edges to prevent seed set. Chemical control is often necessary, requiring the use of systemic herbicides combined with surfactants to ensure proper penetration through the plant's unique, sticky foliage.

• Mechanical removal through deep plowing in late autumn.
• Preventive mowing of uncultivated areas to stop seed dispersal.
• Use of systemic herbicide applications during the rosette stage.
• Implementation of competitive crop rotation strategies.