Currently, ragweed populations are clearly increasing in Switzerland. As the species give rise too severe health, environmental and agricultural concerns, implement of control measures in arable fields are now compulsory. In order to precise the efficacy against ragweed of the herbicides presently registered in Switzerland, field and glasshouse trials have been carried out between 2003 and 2007. Amongst the fifty herbicides applied, a dozen revealed efficacies equal or superior to 95%. These active ingredients allow a correct ragweed control in most of the crops cultivated in Switzerland. According to glasshouse results, in some cases, weed stage revealed important to assure the efficacy of the treatment.
Birdsfoot trefoil and sainfoin are used in mixtures for perennial hay meadows and for tannin-containing fodder. Agroscope is adding two new cultivars of birdsfoot trefoil to the ‘List of Recommended Varieties of Forage Plants’, whilst there is no change in the case of sainfoin.
Tall oat grass and golden oat grass are typical hay-meadow grasses that are also suitable for forage mixtures. Of the four tall and three golden oat grass varieties tested, only one new variety of tall oat grass is likely to make it onto the List of Recommended Varieties.
Stevenel P., Wendling M., Brabant C., Suss H., Savoyat C., Dierauer H., Mascher F., Charles R.
FiBL and Agroscope investigated bread wheat varieties to determine their yield and quality stability. The results show that the choice of variety must be adapted to the site and that high yield potential does not go hand-in-hand with a high protein content.