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Hmyzí škůdci ovocných dřevin v sadech postižených tornádem
Mančíková, Radka
Observations of insect pests were carried out in 2022 and 2023 on domestic apple trees in two orchards in the Hodonín region, in Lužice, in an orchard affected by a tornado, and in Prušánky. During the observation of overwintering stages of pests, a total of 6 159 individuals from two orders, four families, were recorded in 2022. The most abundant family was Diaspididae (5 922 individuals), followed by Tetranychidae (151 individuals), Psyllidae (63 individuals), and Aphididae (22 individuals). In 2023, there was a significant decline in the abundance of representatives of all families. On average, the abundance of pests was higher in the experimental plot in Prušánky. Two species – Aphis pomi and Eriosoma lanigerum – were recorded during aphid observations during the growing season. A total of 733 colonies were recorded, the species distribution was roughly the same in both plots. The apple trees damaged by the tornado had the lowest number of aphid individuals. Using a pheromone trap for Cydia pomonella, its occurrence was confirmed in both experimental plots. The observation period was from 1 May to 31 August, and two peaks of occurrence were recorded during this period. With beating, total of 331 individuals, 7 insect species from 5 families, were recorded during the period from 22 August to 25 September. The most abundant species was the apple sawfly (Hoplocampa testudinea) (80 individuals).
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