The grape cluster borer Lobesia botrana (Lepidoptera: Tortricidae) is the most important pest of this plant in Iran, including in North Khorasan province. To compare the infestation rates of 12 grape cultivars to this pest, a study was conducted in the city of Bojnord during the years 2020-2021. The emergence times of the three pest generations were determined using pheromone traps (delta traps), and after observing damage symptoms, the percentage of infested clusters was calculated. The lowest percentage of infested clusters was observed in the Flame Seedless (5.5%) and Yagooti (7.3%) cultivars, while the highest infestation rates were seen in the Siah-Sardasht (44.1%) and Khushnav (38%) cultivars. The results of this study indicated that the level of infestation and damage caused by the grape cluster borer pest varied significantly between different cultivars. Therefore, it is recommended to use the relatively resistant cultivars identified in this study when establishing new vineyards. Additionally, nursery producers in the country can propagate and distribute the resistant cultivars identified in each province to the vineyard expansion applicants.
(2025). Study of the Infection Rate of Different Grape Cultivars to the Grape Cluster Borer in North Khorasan Province. Extension Grape Magazine, 6(2), 10-15.
MLA
. "Study of the Infection Rate of Different Grape Cultivars to the Grape Cluster Borer in North Khorasan Province", Extension Grape Magazine, 6, 2, 2025, 10-15.
HARVARD
(2025). 'Study of the Infection Rate of Different Grape Cultivars to the Grape Cluster Borer in North Khorasan Province', Extension Grape Magazine, 6(2), pp. 10-15.
CHICAGO
, "Study of the Infection Rate of Different Grape Cultivars to the Grape Cluster Borer in North Khorasan Province," Extension Grape Magazine, 6 2 (2025): 10-15,
VANCOUVER
Study of the Infection Rate of Different Grape Cultivars to the Grape Cluster Borer in North Khorasan Province. Extension Grape Magazine, 2025; 6(2): 10-15.
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