22 Eyl 2025 Pazartesi
Investigation of damage caused by the European grapevine moth, Lobesia botrana (Denis & Schiffermuller) (Lepidoptera: Tortricidae) in different grape varieties
Abstract : Although many studies have been conducted on the biology, ecology, and damage of European Grapevine Moth, Lobesia botrana (Denis & Schiffermuller) (Lepidoptera: Tortricidae), one of the major pests of vineyards, there is limited information on its damage to different grape varieties. This study was carried out in 2023 and 2024 in the Balcalı location of Adana province, Türkiye to determine the larval damage to grape berries in three different grape varieties (Michelle Palieri, Yalova İncisi, and Kardinal). No damage was detected during the flowering and early berry formation stages. However, larval damage was recorded in all grape varieties at the beginning or middle of June, corresponding to the second generation of the pest. The larval damage was observed in grape berries that had just begun to ripen. At the time when the first typical damage appeared, the accumulated effective temperature was 900 or 1000 degree-days. Among the three varieties, the early-ripening Yalova İncisi exhibited significantly higher larval damage compared to the other two varieties, with a maximum recorded damage rate of 5%. Consequently, this pest tends to cause more damage to varieties having the compact clusters with large berries.