Akademik Veri Yönetim Sistemi
V. Balkan Agricultural Congress, Edirne, Türkiye, 20 - 23 Eylül 2023, cilt.1, ss.120
Some plant sucking mites and insects have been controlled practically by Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae). Since several pesticides used against the plant pests are highly toxic to the phytoseiid species, the use of the pesticide resistant predator strains could be cost effective tactic for biological control. As a matter of fact, numerous pesticide resistant strains in phytoseiids has been reported previously. The aim of this study was to artificially select a native population of the predatory mite, which was collected from Turkiye, with a widely used acaricide formulation that is a mixture of two active substances (125 g/L bifenazate + 7.5 g/L abamectin). For this purpose, after 4 consecutive generation selections with LC50 values of the formulation, the acute toxic effects of the formulation were determined on both native and selected populations of the A. swirskii under laboratory conditions. Compared with native populations, selection in the laboratory for 4 consecutive generations resulted in 11 and 28 folds bifenazate and abamectin resistance in females and juveniles of A. swirskii, respectively. Toxicological data shown that the recommended field concentration (0.1 ml/100 L water) of bifenazate and abamectin mixture formulation was found harmless for both females and juveniles for selected population of A. swirskii based on the side effect scale. Whereas, the concentration was moderately harmful and harmful in females and juveniles in the native field population, respectively. The findings obtained from this study shown that the resistant populations of A. swirskii will be a significant source for combined the biological and chemical control methods in Integrated Pest Management (IPM) Programs in the futur
number of 122R115