Our two new, diploid red clover cultivars Merula and Pavo are distinguished by their excellent persistence for three years. Thus, one of the principal assets of «Mattenklee», a persistent form of early flowering red clover of Swiss origin, sees further improvement. Stands of Merula and Pavo suffer much less from attacks by Colletotrichum trifolii, the causal agent of southern anthracnose, than all Mattenklee cultivars recommended previously. This is why they remain vigorous until autumn of the third year of cultivation, even after hot summers which favor the growth of Colletotrichum. The two new cultivars are also at least as resistant against Sclerotinia rot and powdery mildew as the best Mattenklee cultivars recommended previously. They produce high and secure yields of good forage quality and can be particularly recommended for those clover-grass mixtures which are designed to best utilize the longevity of Mattenklee.
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.