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NOVISYS – Neue Rebsorten im Minimalschnitt im Spalier

novisys
Die wichtigsten Fakten aus Forschung und Praxis
gefördert vom Bundeministerium für Bildung und Forschung

Auszug Seite 20:

WEINQUALITÄT

Dass mit neuen Rebsorten, den PIWIs, qualitativ hochwertige Weine produziert werden können, ist inzwischen kein Geheimnis mehr. Dies konnte im Rahmen des novisys-Projektes auch für Weine aus dem Minimalschnitt im Spalier gezeigt werden. Für die Weinqualität und den Weintyp ist das Ertragsniveau, der Gesundheitszustand der Trauben sowie der richtige Lesezeitpunkt entscheidend. Gerade ein überhöhter Ertrag und eine zu frühe Lese führen beim Minimalschnitt im Spalier schnell zu unreifen, dünnen und bitteren Weinen, die bei Rotweinen mit einer geringen Farbausprägung einhergehen. Aus diesem Grund ist eine gezielte Ertragsreduzierung (BBCH-Skala: 75) in den ersten Jahren der Umstellung unbedingt zu empfehlen. Darüber hinaus führen die kleineren Beeren im Minimalschnitt im Spalier zu einem erhöhten Beerenhautanteil und somit zu einem weiteren Beerenhaut-Fruchtfleisch-Verhältnis.
Hiervon profitieren Weine aus dem Minimalschnitt im Spalier. Bei einem moderaten Ertragsniveau und an die Reife angepassten Lesezeitpunkt können so im neuen Anbausystem aromaintensive, duftige und schlanke Weißweine sowie tanninreiche und farbintensive Rotweine erzeugt werden.

Quelle:
IMPRESSUM
Forschungsprojekt novisys Projektleitung: Prof. Dr. Reinhard Töpfer

Julius Kühn-Institut
Bundesforschungsinstitut für Kulturpflanzen (JKI) Institut für Rebenzüchtung Geilweilerhof Geilweilerhof
www.zukunft-weinbau.de

weiterlesen (PDF 3,4 Mb)
January 20, 2021|

Verbraucherorientierte Stilistik für PiWi-Weine

… als Beitrag zu einer höheren Marktakzeptanz

Erste Ergebnisse aus dem Verbundprojekt VITIFIT
Marc Weber, Jochen Vestner, Christoph Kiefer, Gergely Szolnoki, Ulrich Fischer

Experteninterviews: Produzenten und Händler

Methode: Einzelinterviews:
Stichprobe:

  •  48 Produzenten
  •  17 Händler

Kooperation: Marc Dressler, Christine Freund (Fragen und Ergebnisse)

⇒ Ziel: Einstellung und Gründe für und gegen PIWI-Rebsorten und potentielle Lösungsansätze gewinnen .

weiterlesen (PDF 5,6 MB)
14. January 2021|

Sensor-based detection of leaf roll sickness on grapevines directly in the field

Sensor-based detection of leaf roll sickness on grapevines directly in the field
The leaf roll disease of the grapevine is a viral disease that spreads worldwide and causes great economic damage. Since the disease cannot be treated directly in the field up to now, prevention is crucial in virus management: Infested sticks must be recognized and cleared early on. However, many plants develop only mild symptoms or no symptoms. The JKI has tested a sensor-based early detection system for leaf roll disease in the field with the Fraunhofer Institute IFF, the Geisenheim University and the University of Hohenheim. With hyperspectral cameras and an adapted phenotyping pipeline, infected vines can be detected earlier than before and suitable measures can then be initiated.
Source: Julius Kühn Institute
read more (english)

December 16, 2020|

CO2 and crop protection savings through PIWI cultivation by Fred Strasser

Fred Strasser

F. Strasser, Dipl Ing Agr ETHZ, organic plant teacher and M. Coray Contact: fredi-strasser@stammerberg.ch

It was only in the 1980s that science and practice recognized the importance of resistance for environmentally friendly cultivation. As a result, cross breeding and cultivation in pioneering companies increased again with special permits. Switzerland's mandatory list of grape varieties initially prevented free cultivation, which was only legitimized in 1995 by abolishing this list. Today, the goal of creating the most natural vineyard possible using resistant grape varieties is open to every Swiss winemaker. This is important for vineyards where thunderstorms and nighttime dew formations cause the infection pressure of the downy mildew to be very high and make short intervals between the frequent treatments not only necessary in organic winegrowing. This allows a high contribution to the reduction of pollution of soil, air, environment, flora, fauna, winegrowers and the climate.

(more…)

August 25, 2019|

Plant protection and biodiversity in agro-ecosystems

Statement of the Scientific Advisory Board of the National Action Plan on the Sustainable Use of Plant Protection Products at Federal Ministry of Food and Agriculture

A new terrifying statement on insect decline and bird death in Germany.

If you are still looking for arguments for growing PIWI grape varieties, you will find them on pages 21, 24 and 25. In the opinion, fungus-resistant varieties are presented as the basis for a new integrated crop protection in agriculture:

6.4 Promotion of integrated crop protection processes including the availability, cultivation and market launch of resistant varieties

Integrated plant protection (IPS) measures rely primarily on a variety of methods used to control harmful organisms, such as: B. use of mechanical methods for weed control, use of crop rotation effects, or the cultivation of less susceptible or resistant varieties and adaptation of sowing times to the location. Such measures should be the first choice, but they are not used sufficiently for various reasons. It can be assumed that the use of chemical pesticides is often preferred to alternative methods because they are easy to use and inexpensive and represent conventional practice. We therefore recommend that farmers' training and advice be geared even more strongly towards integrated crop protection than before.

Read statement (PDF, 2MB)
March 7, 2019|

PIWI grape varieties in Switzerland - an as-is analysis as the basis for a planned funding project

Master thesis by Lena Holzwarth

Master of Science in Life Sciences - Agricultural and Forest Sciences -

Read master thesis (PDF, 8 MB)
August 26, 2016|

Life cycle assessment of Swiss wine from ÖLN and organic production

Study by Sarah Wettstein, Matthias Stucki, Matthias Meier, Peter Schumacher, Jürg Buchli on behalf of the Federal Office for the Environment (FOEN)

In addition to animal foods, the consumption of alcohol and other luxury foods contributes significantly to the environmental impact of nutrition. In 2014, with 35 liters per capita and year after beer, wine was the most consumed alcoholic beverage. The management of vineyards is associated with a high consumption of resources and energy, as well as with production-related emissions to the air, soil and water. Emissions were reduced with the introduction of integrated production (IP). Organic production goes one step further by banning chemical-synthetic pesticides and increasing the cultivation of fungi-resistant (PIWI) varieties.

The aim of the present study is to assess the environmental impact of wine production in Switzerland with the two production systems mentioned and the cultivation of PIWI varieties using an ecological balance sheet and to highlight the most important influencing factors. In addition, a biodiversity assessment was carried out to show the effects of different production systems on biodiversity.

Read the study (PDF, 1.6 MB)
May 18, 2016|

Fungus resistant grape varieties as a suitable alternative for organic wine production: Benefits, limits, and challenges

Article by Karine Pedneaulta and Caroline Provost in the magazine "Scientia Horticulturae"

Abstract:

Areas dedicated to organic wine production have significantly increased over the last few years. The vast majority of organic wine is made from Vitis vinifera varieties that are highly susceptible to fungal diseases and pests, making organic management difficult for growers. Depending on the growing area, 20-70% of organic growers declare issues with fungal diseases in Europe. Recently, fungus-resistant grape (FRG) varieties have been recommended as the most suitable choice in organic viticulture, especially in areas where disease pressure necessitates high rates of fungicides. FRG varieties could contribute to improved disease management in organic as well as conventional viticulture, reduce production costs and decrease copper accumulation in soils. Recently, many FRG varieties presenting advantageous agronomic attributes and enological characteristics have been developed in North America and Europe for conventional and sustainable farming. In this review, we present an overview of the benefits and limits associated with FRG varieties in addition to the current knowledge regarding berry and wine composition, canopy management, and winemaking challenges and practices.

© 2016 Elsevier BV All rights reserved.

Read article (PDF, 0.7 MB)
March 14, 2016|

A positive contribution to the carbon dioxide balance

Article by Martin Mehofer in the Austrian trade magazine "Winemaker"

Sustainability is currently a buzzword. In particular, the ecological aspect, which also includes the carbon dioxide balance, is very much discussed in the context of environmental policy. Domestic vineyards alone currently have the potential to bind up to approx. 750,000 t CO2 per year - an enormous contribution to environmental protection, which can still be expanded through an appropriate economy.

Read Article (PDF, 0.4 MB)
September 9, 2011|
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