Article CC BY 4.0
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published

Effects of canopy architecture and microclimate on grapevine health in two training systems

GND
1173448322
Affiliation
Julius Kühn-Institute (JKI), Federal Research Centre of Cultivated Plants, Plant Protection in Fruit Crops and Viticulture, Siebeldingen, Germany; University of Koblenz-Landau, Institute for Environmental Sciences, Landau, Germany
Kraus, Christian;
Affiliation
University of Koblenz-Landau, Institute for Environmental Sciences, Landau, Germany
Pennington, T.;
GND
1050416945
Affiliation
Julius Kühn-Institut (JKI), Federal Research Centre of Cultivated Plants, Institute for Grapevine Breeding Geilweilerhof, Siebeldingen, Germany
Herzog, Katja;
GND
117374990X
Affiliation
Julius Kühn-Institute, Federal Research Centre of Cultivated Plants, Plant Protection in Fruit Crops and Viticulture, Siebeldingen, Germany
Hecht, Andrea;
GND
105914011X
Affiliation
Julius Kühn-Institute, Federal Research Centre of Cultivated Plants, Plant Protection in Fruit Crops and Viticulture, Siebeldingen, Germany
Fischer, Michael;
Affiliation
University of Hohenheim, Department of Phytopathology, Hohenheim, Germany
Voegele, R. T.;
GND
139264329
Affiliation
Julius Kühn-Institute, Federal Research Centre of Cultivated Plants, Plant Protection in Fruit Crops and Viticulture, Siebeldingen, Germany
Hoffmann, Christoph;
GND
1059151928
Affiliation
Julius Kühn-Institut (JKI), Federal Research Centre of Cultivated Plants, Institute for Grapevine Breeding Geilweilerhof, Siebeldingen, Germany
Töpfer, Reinhard;
GND
1059151588
Affiliation
Julius Kühn-Institut (JKI), Federal Research Centre of Cultivated Plants, Institute for Grapevine Breeding Geilweilerhof, Siebeldingen, Germany
Kicherer, Anna

Semi minimal pruned hedge (SMPH) is a time and cost saving grapevine training system, which is becoming more and more popular in German viticulture. In this study we compared the canopy architecture and its effect on the microclimate of SMPH trained grapevines with those of plants trained in vertical shoot positioning (VSP). We detected a 3 % points higher humidity and a 0.9 °C lower mean temperature within the complex canopy architecture of SMPH trained vines compared to VSP. Moreover, we investigated the influence of the differing microclimate, canopy and bunch architecture, as well as berry skin characteristics of the two training systems on the incidence of the major fungal grapevine diseases Downy Mildew, Powdery Mildew and Botrytis Bunch Rot, as well as on the occurrence and damage of the invasive insect pest Drosophila suzukii. We demonstrate that SMPH trained vines can be more susceptible to Downy Mildew and Powdery Mildew than VSP trained vines. The incidence of Botrytis Bunch Rot can be higher in the latter system, even if berry skin characteristics are the same in both training systems. We trapped a higher number of D. suzukii in SMPH canopies, however no increased berry damage was observed. Based on our results we recommend a more adapted plant protection regime for SMPH trained vines due to their higher susceptibility to the major fungal diseases. Furthermore, we propose a combination of SMPH and fungal resistant grapevine cultivars, e.g. 'Reberger', to achieve a more competitive, environmentally friendly and high quality grapevine production.

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