DOWNY MILDEW (PLASMOPARA VITICOLA) ATTACK IN THE GRAPEVINE PLANTATIONS OF SCDVV BLAJ IN 2023
DOI:
https://doi.org/10.51258/AAR.2024.6.33Keywords:
climatic conditions, grapevines, cultivars, downy mildew, Târnave wineyardsAbstract
The present study addresses the relationship between grape cultivars, grapevine downy mildew the evolution of climatic factors in the year 2023. The analysis was conducted during the vegetation period of 2023, on the varieties Astra, Amurg, Blasius, Selena, Fetească albă, Muscat Ottonel, Sauvignon blanc, Neuburger, and Rhine Riesling. The assessment of the infestation was determined on leaves and grapes. The severity of the downy mildew on the studied cultivars manifested differently among the analyzed varieties. The most affected was Sauvignon blanc with a degree of attack (AD) of 36.43% on grapes and 18.6% on leaves, and the least affected on leaves was the Rhin Riesling variety, with an AD of 2% and on grapes the least was Blasius with an AD of 0.1%. For the Sauvignon blanc variety, a higher AD was recorded on grapes than on leaves, compared to other varieties where the AD on leaves was higher than on grapes. This information provides a database for developing downy mildew management strategies, with differentiated treatments for specific climatic conditions, and grape varieties.Downloads
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