From 2010 to 2012, the Agroscope Reckenholz- Tänikon ART and Agroscope Changins-Wädenswil ACW research stations conducted experiments with 20 varieties of white clover and 12 of smooth-stalked meadow-grass. Ten of the white clover and eight of the meadow-grass varieties were new cultivars. Juvenile development, vigour (general impression, stand density, regenerative capacity), winter-hardiness, resistance to leaf diseases, persistence (quality at the end of the final test year) and suitability for cultivation at higher altitudes were assessed. In addition, the content of cyanogenic glycosides of the white clover and the content of digestible organic matter of the meadow-grass were assessed. Four new white-clover cultivars, viz., «CW 0905», «CW 0904», «TR 0505» and «TR 0705», and three meadow-grass cultivars – «PP 0515», «PP 0425» and «Varenzo 5» – performed sufficiently well to earn recommendation. Unfortunately all these varieties have yet to pass the DUS test which will allow their recommendation. Based on the results, recommendations have been withdrawn for the previously recommended white clover varieties «Vysocan» and «Seminole», as well as for the meadow-grass variety «Tommy».
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.