Abstract
Climate change, through its influence on temperature, humidity and rainfall, favors the spread and activity of many aphid species, leading to increased infestation risks for vegetable crops worldwide. In 2023, aphid species were monitored at the Vegetable Research and Development Station of Bacău (VRDS Bacău). Six aphid species were identified in the vegetable crops in the conventional agriculture experimental field. However, only four species - Aphis fabae, Aphis gossypii, Myzus persicae and Brevicoryne brassicae - exceeded the economic damage threshold. The degree of attack (DA%) of these species was influenced by climatic factors, in particular fluctuations in temperature, relative humidity and precipitation. In May and June, moderate temperatures and high humidity levels favored aphid activity, with maximum DA% observed for A. fabae and M. persicae. During summer, A. gossypii became more predominant, while B. brassicae showed maximum activity in the fall months. The data highlight the importance of climate monitoring in integrated pest management, allowing control strategies to be adapted to seasonal conditions and increasing the effectiveness of pest control measures. This study provides valuable information for optimizing pest management practices in vegetable crops under varying climatic conditions.