Keyword: Water discharge
To the Water as an essential tool for Photosynthesis and supplies Nutrients of Vine effectively use, you must have a rapid withdrawal from running or seeping made in the vineyard soil. This must sometimes be provided by artificial measures. This is supported for example by Greening or by an organic Mulch . In extreme cases, be applied with correspondingly high costs, an artificial drainage. The vineyards of the Medoc Bordeaux was in the way in the 17th Century only by extensive and labor-intensive dewatering and drainage measures from a partly "swamp" the now world-famous wine region.
A certain amount of water to supply the plant must of course be obtained from the ground or tied. If the seepage of excess water by a water-impermeable layer is prevented, can lead to waterlogging. Longer lasting this is from the shoot in the spring of extremely harmful, because it restricted root growth and activity of Microorganisms in the soil is limited. This leads to a lack of supply of nutrients.
Moisture in the soil at the time of Bloom leads to poor Fruit set and Coulure . Waterlogging, especially in the roots of much of the ground covered by the main layer extremely negative. In the underlying sub-floor waterlogging is to some degree acceptable, but it is thereby reduced, with all the possible negative effects of the root depth. Thus, a lower floor has a characteristically mostly faded, grayish color. A good drainage usually have loose and stony soil type with deposits of limestone, gravel and chalk.
On the other hand tend dense, heavy soils from clay, clay and sand to waterlogging or poor drainage. A high content of Potassium gives the floor a permeable crumbliness with good water drainage, sometimes even in heavy soils. For soils with poor water drainage beseitigendem not the choice that is base and rootstock is very important. An excellent wine garden soil has a good balance between water discharge and Water storage capacity . See also under care Weingarten .