In 2012 to 2014, Agroscope tested 18 diploid and 19 tetraploid varieties of Italian ryegrass at five sites in terms of their suitability for cultivation; four of the diploid and eight of the tetraploid varieties had already been recommended, and were retested. Yield, vigour, juvenile development, competitive ability, persistence, winter-hardiness, resistance to leaf diseases and bacterial wilt, and digestibility were assessed. In the diploid group, the new cultivars «Rabiosa» and «LI 0615» met the agronomic requirements for recommendation, excelling chiefly owing to their high yields. On the basis of the results, the hitherto-recommended variety «Rangifer» is no longer being recommended, and is being deleted from the List of Recommended Varieties of Forage Plants. In the tetraploid group, «LI 0735» impressed with its solid scores in all traits, and clearly fulfilled the agronomic requirements. The previously listed varieties «Ellire», «Zebu», «Alces» and «Gemini» no longer meet the requirements for recommendation, and are being deleted. In order to be recommended, the new cultivars «LI 0615» and «LI 0735» must pass the test for distinctiveness, uniformity and stability of traits in addition to the agronomic test.
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.