With this high vine training system, the shoots are trained "in reverse" from top to bottom instead of from the bottom to the top. The cordons are pulled up very high so that the fruit shoots can grow downwards in sufficient length and do not lie on the ground. The drooping shoots can lead to the formation of bells and thus to a compaction of the foliage. This poses the risk of poorer penetration of plant protection products and thus higher disease infestation such as various fungi like mildew and others. Therefore, in one of the variants, the foliage is pressed by a "catch wire" to the downwind side, while the grapes are on the upwind side. In this way, the grapes are not covered by overhanging shoots.
The glossary is a monumental achievement and one of the most important contributions to wine knowledge. Of all the encyclopaedias I use on the subject of wine, it is by far the most important. That was the case ten years ago and it hasn't changed since.Andreas Essl