Volume 10, Issue 2 ((Spring and Summer) 2021)                   pps 2021, 10(2): 40-49 | Back to browse issues page


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Bahlooli S, Abrinbana M, Ghosta Y. 4. The effect of the mixtures of carbendazim, iprodione and tebuconazole on Sclerotinia sclerotiorum. pps. 2021; 10 (2) :40-49
URL: http://yujs.yu.ac.ir/pps/article-1-342-en.html
Department of Plant Protection, Faculty of Agriculture, Urmia University, Urmia, Iran , m.abrinbana@urmia.ac.ir
Abstract:   (1260 Views)
Bahlooli S, Abrinbana M, Ghosta Y (2021) The effect of the mixtures of carbendazim, iprodione and tebuconazole on Sclerotinia sclerotiorum. Plant Pathology Science 10(2):40-49.  Doi: 10.2982/PPS.10.2.40.
Introduction: Soil-borne fungus Sclerotinia sclerotiorum or white mold is the cause of the destructive disease of root and stem rot of many plants. Chemical control due to the lack of highly resistant cultivars is the most important method in the pathogen management program in various plants. However, the repeated use of fungicides leads to the development of resistant strains in pathogen populations. The use of fungicides with different modes of action, especially those with a synergistic effect, is one the most important anti-resistance methods. Materials and Methods: In this research, the effect of different mixing ratios in pairs of carbendazim, iprodione, and tebuconazole fungicides and their possible synergistic activity on four S. sclerotiorum isolates were investigated in vitro conditions. For this purpose, the isolates were cultured on potato dextrose agar, containing different concentrations of fungicides mixtures, and EC50 values and the synergy factors were then determined for different mixtures ratios. Results: Tebuconazole: carbendazim mixture in 1:7 ratio, with a synergistic activity, inhibited all the isolates growth, and carbendazim: iprodione mixture in 1:9 ratio showed a synergistic effect on three isolates. Conclusion: The mixture of tabuconazole: carbendazim in 1:7 ratio had the best synergistic activity, and inhibitory effect on the growth of all the pathogen isolates, so it has the potential to be used in the management program of S. sclerotiorum.

 
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