Articles in the Swiss press on tansy ragwort (Senecio jacobaea) have lead to a broad uncertainty in summer 2002. In the present article we summarize the available information about this and the two other indigenous grassland ragwort species outside the alpine summer pastures. Senecio jacobaea as well as the similar S. erucifolius grow in ruderal areas, embankments and in extensive pastures. In intensive pastures and meadows, however, the species have no chance to establish. Ragwort species are also hardly found in ecological set-aside areas. On highway embankments and locally in semi-intensive pastures tansy ragwort has increased. In two mountain regions the closely related but rather rare Senecio aquaticus has strongly increased in semi-intensive meadows. Ragwort species are dangerous mainly to cattle and horses. A control of ragwort in the grassland is therefore essentia
Tuta absoluta is one of the most destructive pests of solanaceous crops. Agroscope has developed a statistical model to study the population dynamics of the pest and its parasitoids and allows interventions to be optimally planned.
Swiss vineyards are often small and arranged in a mosaic of separate plots and management practices. Therefore, it can be assumed that spray drift from conventional to organic vineyards occurs regularly. Nevertheless, no pesticide residues are detected in most organic wines.
Nay M.M., Grieder C., Frey L.A., Amdahl H., Radovic J., Jaluvka L., Palmé A., Skøt L., Ruttink T., Kölliker R.
Red clover is one of the most important legumes in European forage production. In a multi-year field trial, researchers tested Europe’s largest collection of different red clover accessions at five European locations.