Gewählte Master / Diploma Thesis:

Andreas Riedl (2017): Einfluss der Temperatur für den Anbau von Olea europaea L. im Vinschgau (Südtirol) aktuell und unter Einfluss des Klimawandels. Eine agrarmeteorologische Betrachtung..
Master / Diploma Thesis - Institut für Meteorologie (BOKU-Met), BOKU-Universität für Bodenkultur, pp 106. UB BOKU obvsg

Data Source: ZID Abstracts

Abstract:

In the northern Italian province of South Tyrol, the cultivation area of olives have thus far mostly been restricted to areas with low altitudes. The goal of this Master’s thesis is to survey whether the successful cultivation of olives is also possible at higher altitudes such as in the Vinschgau valley in terms of climatic parameters. For this purpose, a station-based view was carried out at different altitudes primarily regarding the climatic factor temperature. A potential limiting factor in pursuit of the survival of olive trees is first and foremost low winter temperatures. To that end, the danger of occurrence of damaging winter temperatures at different plant organs was identified and potential avoiding strategies developed accordingly. The occurrence of phenological phases were simulated with different numeric models and those were validated where possible. With the simulated data, mathematic models were developed with which phenological phases can be simulated in the research area at different altitudes. The duration of the vegetative period of the fruits is limited by early frost events with temperatures under -2 °C. Meanwhile, the relative occurrence of these early frosts was examined for the research area on the basis of climate data. The oil-yield per hectare was simulated on the basis of a model using the radiation-use-efficiency for olive trees. The used oil-yield model did not include the factor temperature, which is however an important factor for the efficiency of photosynthesis. For that reason, a site-specific correction factor was generated to compensate for this. The yields drop at higher altitudes. Good yields are nevertheless still possible in the given research area. The shift of flowering dates, fruit weight and oil-yield per fruit was demonstrated under the influence of climate change with site-specific climate models. With the results of this Master`s thesis, a first assessment can be done to consider where the limits of olive cultivation at Vinschgau valley are located and how temperature influences fruit- and oil-yield. In future breeding, the evaluation of variety-specific parameters and trails on site are required for overall successful olive cultivation.

Beurteilende(r): Eitzinger Josef

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