In Switzerland also, alien plant invaders can threaten biodiversity. The impacts of these invasive plants on agriculture can very according to species. In fact, most of them are not directly related to agriculture; but some species, such as ragweed (A. artemisiifolia) or narrow-leaved ragwort (S. inaequidens), can also colonise and threaten arable land. On the other hand, some new non-native species, such as velvetleaf (A. theophrasti), are potent noxious agricultural weeds that do not threaten natural habitats and biodiversity. Even native plants are mentioned as locally becoming invasives (S. aquaticus and S. jacobaea). This paper clarifies some definitions about the notions of “weed” and “invasive plant”. It describes some examples of alien species presently important for Switzerland as invaders and their relationship, very variable, to agriculture. It also discusses the collaborations now needed between agriculture and biodiversity conservation.
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.
Adapted and high-yielding varieties of forage plants are important for Switzerland as a grassland country. Hybrid ryegrass is a versatile forage grass that, thanks to breeding advances, has become even more persistent, disease-resistant and high-yielding over the past 30 years.