Climate change places the agriculture in front of new challenges. An assessment of the water requirement of grassland, pasture and arable land on the basis of the evapotranspiration potential plays a central role in the planning of adaptation measures. The reference evaporation, a concept introduced in the 1990’s by the Food and Agriculture Organization (FAO) and presented in this paper, defines the evaporation potential of standard vegetation with an abundant water supply. It is determined on the basis of the so-called Penman-Monteith equation and, as demonstrated here, is able to accurately reproduce the evolution of the evaporative flux from grassland as observed on the Swiss Plateau under virtually optimum conditions.
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.
Tall oat grass and golden oat grass are typical hay-meadow grasses that are also suitable for forage mixtures. Of the four tall and three golden oat grass varieties tested, only one new variety of tall oat grass is likely to make it onto the List of Recommended Varieties.
Stevenel P., Wendling M., Brabant C., Suss H., Savoyat C., Dierauer H., Mascher F., Charles R.
FiBL and Agroscope investigated bread wheat varieties to determine their yield and quality stability. The results show that the choice of variety must be adapted to the site and that high yield potential does not go hand-in-hand with a high protein content.