Browsing by Author "Polat Akkopru, Evin"

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Effects of Liquid Vermicompost and Synthetic Npk Fertilizer Sources on Myzus Persicae Sulzer (Aphididae: Hemiptera) Fed on Tobacco
(Springer Heidelberg, 2021) Polat Akkopru, Evin
Green peach aphid (Myzus persicae Sulzer (Aphididae: Hemiptera)) is a polyphagous pest that causes economic losses in the tobacco. In addition to general aphid damage, it is a vector for important viral diseases in tobacco. Fertilization methods, which are used to increased soil fertility, in the plant growing phase, contribute significantly to the optimal physical, chemical and biological properties of the soil, which allows the plants grown in that soil to be more resistant to diseases and pests. Therefore, in this study, the effects of liquid vermicompost and synthetic fertilizer applications on the development and biological parameters of green peach aphids were investigated in comparison with the control. The experiments were carried out under controlled climate chambers. Life table parameters were obtained using the data obtained for the development and reproduction of the aphids. In the study, while there was no statistically significant difference between population parameters, both treatments were found to suppress the pest populations compared to the control application. This application can be used as an ecological control method for the pest.
Predation Rate Linked To Life Table Ofchrysoperla Carnea(Stephen) (Neuroptera: Chrysopidae) Fed on Small Walnut Aphid (Chromaphis Juglandicola) (Kalt.) (Hemiptera: Aphididae): With Population and Predation Projections
(Springer, 2021) Yilmaz, Mehmet; Polat Akkopru, Evin
Small walnut aphid (Chromaphis juglandicola(Kaltenbach) (Hemiptera: Aphididae) is important pest in walnut orchards in Lake Van Basin, Turkey. In this study, the life-table parameters reflecting population growth rate and predation rate ofChrysoperla carnea(Stephen) (Neuroptera: Chrysopidae), which is one of the important predators of the pest, were determined. Life table parameters were estimated according to age-stage, two-sex life table method. Variances and standart errors of population parameters were obtained according to Bootstrap method. The values obtained for the intrinsic rate of increase (r), finite rate of increase (lambda), net reproductive rate (R-0) and mean generation time (T) were 0.072 d(-1), 1.070 d(-1), 62.48 offspring and 57.16 d, respectively ofC. carneafed onChromaphis juglandicola. The net predation rate (C-0) was determined as 212.9 aphids. Pradation projection was performed by using timing program to prevent the predator's decrease in predation capacity and to determine the most appropriate release quantities and the appropriate interval between releases (to fill predation gaps) for biological control. The possible effects of the findings on the bio-controls ofChromaphis juglandicolabyC. carneawere discussed. Results obtained can be used in pest management program that will be prepared for this pest.