Graft
A Pfropfrebe (also known as finishing or seedling called) is a plug in viticulture ; A noble rice is grafted (refined) onto the rootstock using special cutting shapes, creating an artificial connection between two pieces of wood from different grape varieties (the rootstock and a European variety susceptible to root aphids) for the purpose of plant refinement of the grapevines .
The grafting (re-grafting) of vines was already known in antiquity. Cato the Elder (234–149 BC) mentions the technology in his work De agri cultura (Of Agriculture).
In the past, vines were mainly grafted to change the grape variety. The main reason for the production of grafted vines , however, was the devastating damage that phylloxera caused in European wine-growing regions in the 19th century . After it had been found out that American grapevines survived the phylloxera infestation of their roots, these were used as rootstocks on which the desired European noble varieties were grafted.
Today, grafted vine seedlings are almost exclusively planted. In addition to the ability to resist root phlegm, the use of suitable supports has other advantages. In this way, vigor, fertility, drought and waterlogging tolerance, time of ripening, closure of vegetation, etc. can be influenced.
Young grafted vines (grafts) are first raised in a nursery for a year before they are planted in the vineyard .
literature
- Karl Bauer: Viticulture (= AV specialist book. ). 8th, updated edition. Österreichischer Agrarverlag, Vienna 2008, ISBN 978-3-7040-2284-4 .
Web links
Individual evidence
- ↑ Marcus Porcius Cato the Elder : De agri cultura , chapter 41.
- ^ Karl Bauer: Viticulture. 8th, updated edition. 2008, p. 89 ff.