A three year study using passive and active sampling techniques showed that the arthropod pest fauna in two commercial vineyards in South-western Quebec was qualitatively and quantitatively different than that of Ontario and NY State. We hypothesize that colder winters and agronomic activity of building hills to cover a substantial portion of a grapevine in the fall for winter protection contributed to low numbers of pests such as the grapeberry moth in both vineyards. The principal pests at very low densities were the grape berry moth and the potato leafhopper. The tarnished plant bug was also captured by active sampling. However, its status as a pest has yet to be established.
Species 1: Homoptera Cicadellidae Empoasca fabae (potato leafhopper)
Species 2: Lepidoptera Tortricidae Endopiza viteana (grape berry moth)
Species 3: Heteroptera Miridae Lygus lineolaris (tarnished plant bug)
Keywords: biological diversity
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