From 2003 to 2005 Agroscope Reckenholz-Tänikon (ART) and Changins-Wädenswil (ACW) had been testing 61 varieties of perennial ryegrass at eight experimental sites. Data on yield, juvenile development, persistence, disease resistance, winter hardiness, competitive ability and adaptation to higher altitudes were obtained. With the data an index value was calculated, allowing for a general evaluation of the varieties. Corresponding to the results the variety LP 0097 of the early to mid-early flowering group will be added to the «List of Recommended Varieties of Forage Plants». With the mid-late to late group this is the case for the varieties Aber Dart, Barnauta and Pomposo. Several tested varieties attained an index value that would allow for recommendation, but, for the time being, they cannot be added to the list because they are not eligible for trade in Switzerland yet.
Spring J.-L-, Zufferey V., Verdenal T., Reynard J.-S., Lorenzini F., Bourdin G., Blouin A., Carlen C., Jermini M., Morisoli R., Ferretti M.
Five Merlot clones bred in Switzerland are currently being distributed by the certification sector. A multiyear trial conducted by Agroscope in Gudo (Canton of Ticino) has made it possible to compare them with French and Italian reference clones and to highlight their very good performances.
Arbuscular mycorrhizal fungi are important for healthy soils and crops. A pan-European study shows that plant-protection products adversely affect these fungi, reducing their ability to supply plants with phosphorus via their roots.
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.