In the trial «Chaiblen» at Tänikon (Switzerland), the effect on yields and economical parameters of a diverse, a cereal-dominated and a maize-dominated crop rotation was examined during 27 years. The evaluation of the years of comparison with silage maize and winter wheat in the three crop rotations showed, that a diverse crop rotation with two years of clover grass had a better yield potential and an easier control for weeds and diseases than the rotations mainly based on cereals or maize. On average, maize yielded 19 % less in the maize-dominated rotation and wheat 10 % less in the cereal-dominated rotation than in the diverse crop rotation. Furthermore, earthworm populations showed a clear increase during the two years of meadows in the diverse crop rotation. This was in contrast to the other crop rotations with almost unchanged numbers of earthworms.
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.