From 2000 to 2002 a selection of early to mid-early potato varieties for fresh consumption have been assessed within the main trials (7 locations) throughout Switzerland. The experiments were conducted by Agroscope FAL Reckenholz and RAC Changins, the two Swiss Federal Agricultural Research Stations, within the framework of the swisspatat working group for new potato cultivars. For seven varieties results concerning agronomic characteristics and cooking quality are presented. Agata, Lady Christl and Derby have been introduced in the recommended list for potato cultivars in 2001, 2002 and 2003 respectively. Agata very quickly replaced the very well established early potato varieties Sirtema and Ostara. Agata convinced by high yield, virus resistance to PVY, regular tuber shape, fine skin and good cooking quality. However, the starch content in the tubers was rather low and reducing sugars were very high. Agata was susceptible to late blight and black scurf. This variety now covers more than 50 % of the early potato production area of Switzerland. Lady Christl convinced by an excellent cooking quality due to its flesh firmness. Its regular shaped and fine skinned tubers were very suitable for all potato dishes. This variety proved to be highly resistant to PVY, PLRV and common scab. Internal rust spots and tuber greening were rather often observed. Derby convinced by high yield and its high late blight resistance. The mealy tubers were mainly suitable for mashed potatoes and hash browns. Short dormancy of the tubers strongly reduced their storability. For organic potato production, the low tuber number per plant was beneficial to achieve high marketable yields under nutrient deficient conditions.
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.