Ragweed (Ambrosia artemisiifolia L.) is presently raising a growing worry in Switzerland. Beside being a weed in arable field, the plant produce a very allergenic pollen that can induce potentially important health problems in the population. This situation require the application of a strong control strategy that concern, beside agriculture, the staffs in charge of the management of natural areas as well as those managing road sides, building- and gravel industries. This paper presents briefly the biology of the plant as well as its means of propagation. It also presents the weed control strategies applicable in agriculture, especially during the fallow time. First observations concerning seeds development indicate that with a unique treatment, carried out at the right time at the end of the season, it should be possible the break the cycle of the plant and so limit its propagation in our country.
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.