Term for vineyards with a certain slope or Tilt, which mostly produce better quality wines due to several reasons. The great advantage of slopes, especially in viticulture, was recognized early on. in the antique Rome had the winged word "Bacchus amat colles" ( Bacchus loves the hills). In general, vineyards with a slope of 5 to 20% (~ 12 °) are considered to be on slopes and above as steep Slope or steep slope. In Germany around 60% of the vineyards are on slopes or slopes. To the steepest locations count the world Dézaley (Vaud-Switzerland), as well as locations in the growing areas Moselle (Germany) and Wachau (Austria) with up to 100% incline (45 °). This results in a much more intense sun exposure, the strongest on a steep slope facing south. Of course, play too soil type and climate an important role. In such vineyards also come often Monorackbahnen (Monorail rack railways).
When creating vineyards, both the inclination (inclination) and the slope direction are relative to the exposition (Solar radiation) for the best possible alignment of the Rows of vines of great importance. The maximum heat emission occurs at an angle of incidence of 90 °, but this is only achieved in a few steep slopes. A south-facing orientation is particularly advantageous in cooler climates. Slopes result in optimal thermals, because the cold air currents fall down the slope at night, where they are warmed up in the morning and move up again during the day. This cycle is mainly related to the production of quality white wines acidification important. The tops of hills are also planted with trees to curb the influx of cold air, which is used in Germany, Austria and France.
Slopes are also mostly present frost protected because the cold air flows into deeper areas. This also allows viticulture in higher and cooler climates. Another advantage is the flatness. Disadvantages can be a stronger one erosion of the soil and more elaborate cultivation of the vineyard, because machining is no longer possible in very steep and narrowly terraced areas. On very steep slopes, the creation of terraces respectively. In Italian, slopes are called Colli (Hill, also as Colline or Sori named) and in France as Côte (also called Côtes or Coteaux), which often appears on the label. With a slope of more than 26% in Austria, a wine from such locations can be considered Bergwein be designated. See regarding classification of vineyards under Grand Cru and Weinbauwürdigkeit,