Sökning: "grapevines"

Hittade 4 uppsatser innehållade ordet grapevines.

  1. 1. Using Machine Learning to Detect Grapevine Disease in Wine Production

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Ivar Vänglund; [2021]
    Nyckelord :Grapevine disease; Downy mildew; Powdery mildew; Image analysis; Deep learning; Convolutional neural network; Data augmentation; Mathematics and Statistics;

    Sammanfattning : When growing grapevines there are common risks for disease outbreaks when the pathogen has remained from earlier growing cycles and the weather and soil conditions work in the diseases' favour. The diseases may spread a lot before being highly noticeable. This means that the harvests of grapes for wine production are in jeopardy. LÄS MER

  3. 2. Opportunities for improved environmental sustainability of a wine producer in South Africa : natural resource management and climate change adaptation and mitigation

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Ida Åslund; [2013]
    Nyckelord :wine production; erosion; carbon footprint; climate change mitigation; viticulture; Greenhouse Gas Emissions; soil conservation; life cycle analysis;

    Sammanfattning : South Africa has been among the top ten wine producing countries for at least 20 years. Even though the land under grapevines is decreasing globally it is still increasing in Africa. LÄS MER

  4. 3. Molecular testing of raspberry plants infected with tomato black ring virus

    Kandidat-uppsats, SLU/Dept. of Plant Biology and Forest Genetics (until 131231)

    Författare :Alexandra Andersson; [2010]
    Nyckelord :virus; raspberry; hallon; TBRV; Tomato black ring virus; nepovirus; nematod;

    Sammanfattning : Nematode-transmitted plant viruses (such as nepoviruses) cause great economically losses in commercially important plants such as tomatoes, grapevines and raspberries all over the world. To avoid spread of the viruses the interest in mapping the viruses has increased. LÄS MER

  5. 4. Carbohydrate storage in buds of Kerner,Solaris, Regent and Rondo grapevines

    Uppsats för yrkesexamina på avancerad nivå, SLU/Horticulture (until 121231)

    Författare :Carin Emanuelsson; [2009]
    Nyckelord :Vitis vinifera; sucrose; glucose; fructose; raffinose; stachyose; cold hardiness; HPLC; buds; grapevines;

    Sammanfattning : The purpose of this study was; to compare sugar content and composition in buds of four inSweden commercially grown grapevine cultivars (‘Kerner’, ‘Regent’, ‘Rondo’ and ‘Solaris’),at three different vineyards in Scania and try to investigate the relationship between sugarcontent and cold hardiness. The concentration of fructose, glucose, sucrose, raffinose andstachyose was determined in the lower positioned buds, 2-8 and upper positioned buds, 9-14of the grapevine shoots with high performance liquid chromatography (HPLC). LÄS MER