Evaluation of some fungicides against symbiotic fungus Ambrosiella hartigii associated with Anisandrus dispar Fabricius and Xylosandrus germanus Blandford (Coleoptera: Curculionidae: Scolytinae)

Authors : Ismail ERPER, Rahman KUSHIYEV, Muharrem TURKKAN, Celal TUNCER

Pages : 60-66

View : 29 | Download : 34

Publication Date : 2018-04-27

Article Type : Research Paper

Abstract :In this study, the efficacy of seven fungicides insert ignore into journalissuearticles values(azoxystrobin, captan, iprodione, imazalil, prochloraz, thiram and cyprodinil+fludioxonil); on two isolates insert ignore into journalissuearticles values(TR-202 and TR-205); of Ambrosiella hartigii was evaluated at in vitro. The fungicides at five concentrations insert ignore into journalissuearticles values(0.25x, 0.5x, 1.0x, 2.0x and 4.0x; where x is the field rate recommended by the manufacturer); were used in this study. Results showed that all doses of the fungicides significantly inhibited the mycelial growth of these isolates compared to the control insert ignore into journalissuearticles values(P<0.05);. Captan, imazalil, prochloraz and cyprodinil+fludioxonil were found to completely inhibite the mycelial growth of A. hartigii isolates even at the lowest dose while thiram, iprodione and azoxystrobin depending on increased doses re-duced the mycelial growth of these isolates at rates between 75–100%, 65-100% and 52-85%, respectively. The doses that caused 50% reduction insert ignore into journalissuearticles values(ED50);, minimum inhibition concentration insert ignore into journalissuearticles values(MIC);, and minimum fungicidal concentration insert ignore into journalissuearticles values(MFC); values indicated that imazalil, prochloraz and cyprodinil+fludioxonil were more effective against the fungus compared to other fungicides. There were no differences between two isolates with regard to ED50, MIC and MFC values of the fungicides.
Keywords : Ambrosia beetles, hazelnut, symbiotic fungus, alternative control, fungicides