مقایسه کارآیی آبامکتین با دو ترکیب گیاهی در کنترل شته مومی کلمBrevicoryne brassicae (Hemiptera:Aphididae) در فضای سبز شهری

The use of ornamental flowers in urban green spaces is widely used in different seasons and is an integral part of current urban management. In order to preserve and maintain the beauty of the appearance of all types of plants and the satisfaction of citizens from the mentioned urban management activities, it is common to use various types of pesticides periodically in the urban environment. Cabbage aphid is one of the important pests of urban greenery in the winter season, which, if not controlled, causes economic damage and transmission of viral diseases through sucking plant sap. In this research, the lethal effect of two concentrations of two plant compounds, Diabon and Melia azedarach L. extract, and chemical pesticide abamectin (with the recommended concentration) were evaluated in comparison to the control treatment (water) on the control of cabbage aphid population. The effectiveness of the treatments was evaluated by recording and comparing the population of aphids on ten selected leaves of ten ornamental cabbage flowers, three times at seven, fourteen and twenty one days after spraying. The results of these experiments showed that after twenty-one days of foliar spraying of abamectin (8.4 ± 2.9) and Diabon with a concentration of 8000 (ppm) (16.3 ± 5.0) had a good performance in controlling different biological stages of cabbage aphid compared to the control treatment (44.50 ±8.75). M. azedarach extract with concentrations of 4000(ppm) (4.83±1.1) and 8000(ppm) (4.66±1.3) in the first seven days also reduced the population of different biological stages of cabbage aphid compared to the control treatment (26.2±6.4). This plant agent can be used by increasing the frequency of foliar spraying in the integrated management of this pest.