During a 2-year monitoring we observed that the occurrence of Fusarium graminearum and the mycotoxin deoxynivalenol are influenced by several cropping factors. Frequently, not only one but the combination of different factors have to be considered e.g. previous crop and tillage. Thus, the entire cropping system should be taken into consideration to retrieve influencing cropping factors. Not the type of the cultivation system but the differences within the farming system account for the differences. The main influencing factor was the previous crop maize and the combination with other factors like reduced tillage or the cultivation of two years maize in a row enhanced this effect. Additionally we observed that spring barley was less infected compared with winter barley. Samples without an application of fungicides and growth regulators as well as a reduced nitrogen fertilisation showed less infection and contamination with mycotoxins.
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.