Fund in Zurich Tösstal save fruit growers

It is a sad picture when a quince tree from the sheet of tan is affected: Only the leaves are brown discolor, then fall off. All around is green, but the quince is bare, the yield is meagre, often also attack the fruit and therefore inedible.

This fungus that infests the quince trees, is widely used. And you get him. The more astonished, the Fruit experts of Fructus were you when you discovered three years ago in Gyrenbad at Turbenthal an old quince tree, the green in the Foliage was Golden and bore fruit, although nearby there is a quince tree stands, the regular of the sheet of tan is affected.

Robust and tasty

"Three years in a row, we watched the tree with ever more tension," says Klaus Gersbach, from Fructus, the Association for the promotion of old varieties of fruit. "Against a hundred-year-old tree is found to be largely robust against the quince leaf tan." In addition, he was with the family, on whose Land it stands, is very popular, because the fruits are especially tasty.

This is a good news for quince lover and lover, the now officially Gyrenbader quince designated variety will be propagated and to buy in a few years in nurseries. Thus, the need to observe the quince trees and to the crop at infestation consuming, or to treat with fungicides is eliminated.

New varieties

discovered the discovery of The Gyrenbader quince was carried out in the framework of a project carried out Fructus in collaboration with the Federal office for agriculture in the last two years. Project Manager Klaus Gersbach has inventoried with Michel Brunner from Pro Arbore old quince trees in Switzerland.

trees were Searched with a trunk circumference of at least 1.30 metres. Such trees are, according to Gersbach in the rule, at least seventy years old. 174 such trees were found a good two dozen of them in the Canton of Zurich.

Of those trees were on the basis of leaf molecular genetic samples made of the tables of analyses. "We were very excited about the results," says the project Manager. The result: we identified fourteen different varieties, including more than a quarter was not yet known.

Ancient quince trees in the city

among the discoveries 21 partially over a hundred years old quince trees with the same genetic profile will. Since many of them are in the Basel area, they received the name of the Variety Basilea. One is in the middle of the city of Basel in the Gundeli-Quartier and has a trunk circumference of 2.65 metres. The experts estimate that he is about 150 years old and thus one of the oldest quince trees in the country.

in the city of Zurich, the project participants were looking for a special quince find it: in the Middle of the city, between Binz and Laubegg is a well over 100 year old quince tree of the genetically linked to Basilea closely related species Vogelrüti. The stem is broken apart, but the tree has survived.

In the sun plants

The inventory revealed more valuable insights about quince trees, as Gersbach is running. So, it could be observed that often only the leaves on the shade side of the tree from the Leaf drying were affected. "So, it is advisable quince trees in Sunny Places and plants, free-standing," says fruit expert.

So, you recognize, incidentally, is also faster if the tree was infected by the fire blight. This is caused by bacteria, plant disease attacks fruit, especially the Core and can spread like an epidemic. However, initial investigations suggest, even the Gyrenbader quince powerless. (Tages-Anzeiger)

Created: 31.01.2019, 12:03 PM