In 2021, we studied the seasonal dynamics of the brown marmorated stink bug in the laboratory field of the Biotechnical Faculty in Ljubljana. The experiment took place between March and November at three microsites where pheromone traps were placed. The first microsite was located at the edge of the horticultural area, the second between the arable area and the orchard, and the third next to small forest area. We obtained important information about the number of generations of brown marmorated stink bug, the timing of its occurrence, the abiotic factors affecting abundance, and the developmental stages occurring on each plant species. We found that the pest began to emerge in early April, with the main catches recorded in July, August and September, and the last catch in early November. The only correlation we discoverd was between average daily catch of adult brown marmorated stink bugs and average daily air temperature. The largest catches were recorded in trap 1, followed by trap 3, and then trap 2. Counts of developmental stages of the pest were conducted randomly on agricultural and wild plant species in the laboratory area from July through October. The pest occurred in all developmental stages (eggs, larvae and adults) only on soybean and industrial hemp, and only as larvae or adults on the other plants.
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