DOI: 10.36347/sajb.2018.v06i03.005

Pages: 263-268

In this study, the effects on soil carbon mineralization of different doses [recommended dose (RD), × 2RD and × 4RD] of Epoxiconazole + Carbendazim fungicide suspension used for destroying the powdery mildew and yellow rust diseases in the cultivation of wheat being a common agriculture product in Osmaniye (Turkey) were determined in soils before and after wheat spraying and the campus soil of Osmaniye Korkut Ata University. Carbon mineralization of three different soils moistered at 80% of the field capacity were observed under controlled conditions (28 °C and 45 days) and CO2 respiration method. At the end of the 45 days incubation period, the highest and statistically significant value of cumulative carbon mineralization was observed in wheat soil sampled after fungicide spraying (AWS × 2RD). This value (7.756 mg C(CO2)/100 g) was significantly different in both within own group and among the other groups (P <0.001). This result showed that Epoxiconazole + Carbendazim fungicide suspension added at × 2RD level was only used as a carbon source for microorganisms in the research soils. In the light of this finding, it might be said that the amount of carbon added into the soil with other doses of this fungicide was not enough to increase microorganism activity.