تأثیر برهم‌کنش تغدیه‌ای بین کودهای ریزمغذی و فلفل دلمه، Capsicum annum L. بر رشد جمعیت پشه شته‌خوار Aphidoletes aphidimyza Rondani

TThe host plants, as the first level of nutrition, have important effects on the predator biology as the third level of nutrition. The aphidophagous midge, Aphidoletes aphidimyza Rondani is an appropriative and important predator of various species aphids in farms, fruit trees and especially greenhouses. The green peach aphid Myzus persicae Sulzer is an important pest of agricultural products with the wide host range and the high ability to transmit important viral diseases. In this study, the effect of foliar application of micronutrient fertilizers of iron, zinc, copper and manganese in comparison with the control on the population growth parameters of A. aphidimyza was investigated. To obtain the cohort individuals, 15 pairs of the A. aphidimyza were transferred to plastic containers containing aphid-infected leaf discs, and after 24 hours, 100 eggs of A. aphidimyza were used in each treatment to start the experiment. Data were analyzed using an age-stage, two sex life table method in TWOSEX-MSChart software. The results showed that micronutrient treatments significantly affected the life table parameters of the predator. Based on results, the highest and lowest intrinsic rate of increase (r) and finite rate of population increase (λ) of A. aphidimyza were observed on iron treatments (0.1485 day-1 and 1.1601 day-1) and control (0.0978 and 1.1027 day-1), respectively. Also, there was a significant difference between various micronutrient treatments in terms of the net reproduction rate (R0) and the highest and lowest values of R0 were observed on the iron and the control treatments (15.8 and 6.42 females / females / generation), respectively. As well as, the gross reproductive rate (GRR) of A. aphidimyza showed a significant difference and the highest and the lowest its values were observed on copper (38.14) and control (19.92 females / females / generation) treatments, respectively. The results show that there was a significant difference between the different treatments in terms of mean generation time (T) and the highest and the lowest T was obtained on control (19.003 day) and manganese treatment (18.096 day), respectively. The results of this study show that the foliar application of plants with micronutrient fertilizers by improving the growth quality and inducing antibiotic resistance in host plants, has a positive effect on the biology and life table parameters of A. aphidimyza. Therefore, the foliar application of bell pepper with micronutrient fertilizers along with the use of A. aphidimyza as an appropriative biological control agent for aphids can be effective in integrated management programs of M. persicae.