Yarwood’s traditional and qualitative detection test for the soil borne pathogenic fungi Chalara elegans (synanamorph: Thielaviopsis basicola) and C. thielavioides (synanamorph: Chalaropsis thielavioides) in soils and substrates was modified in order to allow quantitative assessments of the population density of the fungi in soils. Preliminary results of independently repeated tests of different soils show a good repeatability in time with acceptable dispersion values for soil biology investigation methods. The validation of the new method is continued.
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.