Pests represent a major pressure on the quantity and quality of potato plants. In potato cultivation, in addition to the most damaging disease, late blight, the most important pests are aphids due to the large number of viruses they transmit. The green peach aphid (Myzus persicae) poses a threat to potatoes because it is capable of causing serious damage (directly by depriving the plant of essential nutrients), transmitting viruses (potato Y virus, cucumber mosaic virus, and PVY), and easily developing resistance to insecticides. To achieve optimal potato yields, it is necessary to control the Myzus persicae species. The aim of the study was to test the effectiveness of bioinsecticides in controlling the green peach aphid. The experiment was conducted in the Belinț locality (Timiș County). Bioinsecticides used to combat the green peach aphid included Kabon, Bitoxybacilin, and Konia K Plus. The evaluation of product effectiveness was determined at 24 hours, 5 days, and 10 days. At the time of applying the biological treatments, the population density of Myzus persicae was 52-86 individuals per 10 potato plants. Konia K Plus bioinsecticide showed the highest effectiveness in reducing the Myzus persicae population (resulting in positive differences from the average in all three assessments). The lowest mortality of the green peach aphid in the potato crop was recorded in the variant treated with Kabon.

control, Myzus persicae, potato, biopreparations

agronomy

Presentation: poster