Abstract
This study has been conducted in 2014 and 2015 in vineyards in Cermik district of Diyarbakir province where ‘Mazruni’ variety is grown commonly. Purpose of the study was to determine some control criteria of grapevine moth (Lobesia botrana Denis & Schiffermuller (Lepidoptera: Tortricidae)) such as the first sight of adults in nature, adult population fluctuations, active period of adults in nature, number of seeds and infestation rate of the European grapevine moth (Lobesia botrana Denis & Schiffermuller (Lep.: Tortricidae)) in vineyards. Conclusion of the study was that in both years, the first flight of L. botrana adults was observed in 6–14 April and the pest had three peaks a year (5–11 May, 29 June–7 July, 11–17 August). Furthermore, it was observed that the first peak coincided with flowering period (May, 1. generation), the second occurred during unripe grape period (June and July 2. generation), and the third coincided with the beginning of sweetening period (August, 3. generation). Adult flights of L. botrana ended on 12–20 October and it was determined that it was active for seven months in nature (mid-April to late October) and it completed 3 generations per year. The infestation rate of L. botrana was determined as 12% and 15% respectively for the two years in the vineyards of Bintas village‑1 while the rates were only 10% and 18% in the vineyards of Bintas village‑2.
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