Since 1990, late blight of potatoes is a major field of research at Agroscope FAL Reckenholz. The main focus is the development of the decision support system PhytoPRE to control late blight in IP- and organic potato production in Switzerland. Weather data and Swiss late blight epidemics of 16 years were analysed and characterised. The analysis showed the impact of late blight in Switzerland. In 12 out of 16 years more than 50 % of the untreated plots of our late blight monitoring net, established in the main potato cropping area of Switzerland, were attacked. With our analysis of the Swiss late blight epidemics, we did not get an indication for an increased severity. Most of the differences of late blight epidemics could be explained with the incidence of infection sources and weather conditions.
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.