Action of fungicide recommended for the tomato culture on Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae)

Abstract

The aim of this study was to evaluate the possible alterations of biological characteristics of Trichogramma pretiossum (Riley, 1879) (Hymenoptera: Trichogrammatidae) submitted to the parasitism of Anagasta kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae) eggs treated with fungicide registered for the tomato culture in selectivity tests using the methodology suggested by the IOBC/WPRS for selectivity studies. A total of 29 fungicides were evaluated in the experiments performed at the Nucleus for Scientific and Technological Development in Phytosanitary Management (NUDEMAFI). Cards with 20 host eggs were immersed in fungicide syrup and submitted to parasitism for 24 hours. After the incubation period for the parasitoid and their emergence the fungicide effects were assessed for the biological characteristics of the parasitism. We concluded that the fungicides Supera® (COPPER HYDROXIDE 537.4g/L), Nativo® (TEBUCONAZOLE 200g/L + TRIFLOXYSTROBIN 100g/L), Censor® (FENAMIDONE 500g/L), Manzate 800® (MANCOZEB 800g/Kg), Captan SC® (CAPTAN 480g/L), Amistar 500 WG® (AZOXYSTROBIN 500g/Kg), Frowncide 500 SC® (FLUAZINAM 500g/L), Fegatex® (BENZALKONIUM CHLORIDE 100g/L), Redshield 750® (CUPROUS OXIDE 860g/Kg), Proplant® (PROPAMOCARB CHLORIDE 722g/L), Isatalonil 500 SC® (CHLOROTHALONIL 750g/Kg), Recop® (DICOPPER CHLORIDE TRIHYDROXIDE 840g/Kg), Bion 500 WG® (ACIBENZOLAR-S-METHYL 500g/Kg) and Curzate BR® (CYMOXANIL 80g/Kg + MANCOZEB 640g/Kg) presented better results for selectivity in the T. pretiosum parasitoid.