Abstract
The aim of the present study was to examine the efficiency of paraffin oil against powdery mildew in Eger wine region. The experiment has been carried out in 2013 and 2014 with Chardonnay and Kékfrankos grape varieties, which have different resistance against powdery mildew. The effectiveness of the oil was examined on leaves and clusters (frequency and intensity). This oil was effective against Erysiphe necator infection on field trials in Chile and Brazil. The spread of downy mildew (Plasmopara viticola) was also inhibited by this material in some experiments conducted in Spain and France.
 The differences between oil treatments represented the sensitivity of the grape varieties in accordance with the applied dosages. The oil was effective against powdery mildew with different extent as a result of the so called ”vintage effect”. In 2013, the treatment of the highest dosage (D3) didn’t differed significantly in frequency and intensity of infection from the regular treatment (clusters of Kékfrankos, leaves of Chardonnay). In 2014, the oil was not so effective against powdery mildew compared to 2013. No remarkable differences were detected between the treatments due to the strong pressure of powdery mildew. Furthermore, no any effect of the lowest dosage (D1) was detected in the case of the sensitive clusters of Chardonnay and leaves of Kékfrankos in both experimental years.
 In summary, the oil treatment has an effect against powdery mildew, however this efficiency largely depends on the vintage characteristics and the pressure of powdery mildew. Further investigations are neccessary, for example field trials with combinations of other sprays. The oil can be useable as fungicide with proper care in eco-friendly integrated and bio (ecological) viticulture.
Highlights
The differences between oil treatments represented the sensitivity of the grape varieties in accordance with the applied dosages
The oil was effective against powdery mildew with different extent as a result of the so called ”vintage effect”
No remarkable differences were detected between the treatments due to the strong pressure of powdery mildew
Summary
The aim of the present study was to examine the efficiency of paraffin oil against powdery mildew in Eger wine region. A szőlő esetében mind az ökológiai és az integrált termesztésben (Szendreyné 2004) nagy szerepe van a lemosó permetezéseknek, az áttelelő alakok elpusztítása, ezáltal a fertőzés kialakulásának mérséklése végett (Szendreyné és dulané 1999). Szabadföldi kísérletek alapján, többféle módon illeszthetők bele a szőlőlisztharmattal szemben alkalmazott kémiai növényvédelem folyamatába, például a permetezéseket olajos lemosással kezdve és/vagy a nagy hatékonyságú szerek mellett additívként (bejutásukat elősegítve), valamint ezen általánosan használt szerek rotációs partnereként használva (Janousek et al 2009). A PdSO készítmények közül például a JMS-Stylet olaj (paraffin) bevált a dMI-szerek alternatívájaként a szőlőlisztharmat és a szürkepenésszel (Botrytis cinerea) szemben (Janousek et al 2009, Sivčev et al 2010).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
