The gross energy content (GE) was determined by calorimetry in 439 samples of 10 main grassland plants. It is mainly influenced by the content of crude protein (R2 = 0.31) and organic matter (R2 = 0.26). The effect of these components is greater in herbs than within legumes and grasses. The stage of development and the cuts have a small effect on the GE content. Based on the content of organic matter and crude protein, the equations of prediction give GE values with a precision of ±0,3 MJ/kg DMand which are close to the values obtained with the standard equations used in Switzerland, France and Germany.
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.